1. 1 Li Zao

Originated in Yuncheng, Shanxi Province, it is a rare raw food species.

The tree has moderate potential, large volume, random or self-heating round crown, few branches, strong branches, weak branches and drooping tree posture. The trunk is grayish brown and the epidermis splits longitudinally. 1 Annual branches are brownish red. Jujube heads are erect, with annual growth of 50~90cm and internodes of 6 ~ 7 cm, which are relatively straight and have long needles. The lenticels are white, large, rare and convex. The jujube rootstock is plump taupe and conical. 1~5 date-smoking hangers, generally 2~3. The hanging length is 8~50cm, and each hanging is 6~3 1 leaf. The fruit-setting parts are mostly in 7 ~ 10 nodes. Some dates are easy to form lignified branches. The number of flowers is sparse, with 1~5 per inflorescence. The leaves are large, thick and broadly ovoid. Leaf blade 6.5 cm, width 3.5 cm, apex obtuse, leaf margin obtuse and serrated, base round and green. The petiole is 0.4 ~ 0.6 cm long. The fruit is huge, nearly round, with a longitudinal diameter of 4. 18cm and a transverse diameter of 3.76cm. The average fruit weight is 26.9g, and the largest fruit is 39 g. The surface of the fruit is not smooth, the peel is thick and reddish, and the fruit point is large and obvious. The pedicel is 0.6 cm long. The stem is shallow and narrow, and the top of the fruit has a longitudinal groove. The flesh is thick, green and white, crisp and sweet, and the sugar content of fresh dates is 28%. The nucleus is large, spindle-shaped, with a longitudinal diameter of 2.64cm, a transverse diameter of 0.89cm and an average nucleus weight of 0.74g g. The nucleus is khaki, with a rough surface, a long groove, a short and sharp top, a slightly dull base and no seeds. The edible rate is 97.2%.

The 7-year-old grafted seedlings of this variety have a height of 3.5m, a ground diameter of 10.0cm, a crown width of 2.7m in the east and west, and a crown width of 2.4m in the south and north. The average single fruit yield is 12.4kg, which germinates in early May, blooms in early June and blooms in late June. The fruit ripens from late September to early June, and leaves fall in the middle and late June. Early fruiting, high and stable yield, and strong fruiting of jujube head. The fruit shape is huge, the meat is crisp and juicy, the taste is sweet and the quality is high. It is an excellent variety for eating or processing candied dates. Disadvantages: Plants are intolerant of drought and poor soil. Fruit maturity is inconsistent in the morning and evening, and it is easy to crack before picking. Suitable for continuous cropping soil cultivation and sporadic garden cultivation with good water and fertilizer conditions near the city.

1.2 Lingwu Jujube

The local rare main varieties in Ningxia are mainly planted in Lingwu county, and other counties and cities have a long history of cultivation.

The tree is strong, upright, with thick branches, and the jujube head is easy to germinate. The trunk is grayish white, and the epidermis is longitudinally cracked and easy to peel off. 1 The annual branches are reddish brown, with an annual growth of 40~70cm. The lenticels are obvious, small and dense, and round. There are long thorns. Jujube strands are conical, and each strand is hung with 1~4 jujubes, with a maximum of 3~4 jujubes. There are few flowers, and each inflorescence has 1~5 flowers. Each fruit is 1~2, most of which are 1, and the yield is low. Jujube hanging is easy to lignify The hanging length is 12~2.5cm, and each hanging has 1 1~ 18 leaves. The leaves are 4~3cm long, 2.3cm wide, and the petiole is 0.4~0.6cm long. The leaves are oval-lanceolate, serrated, green and shiny.

The fruit is large and rectangular, with a longitudinal diameter of 5. 1cm and a transverse diameter of 2.9cm, and the fruit surface is not smooth. The average fruit weight 18.05g, the maximum fruit weight is 26.80g, the stem length is 0.4cm, the stem depression is deep and wide, and the fruit shoulder is flat. The top of the fruit is uneven and the stigma remains. The skin is purplish red, and the fruit is reddish brown, which is not obvious. Thin skin, white meat, crisp and juicy, sweet and sour, sweet and sour and delicious, and extremely high quality. Fresh dates contain 30% sugar and 0.25% acid. Jujube branches are slender, spindle-shaped, with a longitudinal diameter of 2.96cm and a transverse diameter of 0.69cm, with an average nuclear weight of 0.8 g. The nuclear surface is rough, the furrow is deep, the nuclear tip is long, and there is no nucleolus. Edible rate was 95.57% and drying rate was 37.2%.

The grafted 7-year-old tree of this variety has a height of 3.2 meters, a ground diameter of 8.7 cm, a crown width of 2.2 meters from east to west and 2.5 meters from north to south. The average yield per plant is 7.4 kg, which germinates in early May. It blooms in early June, blooms in mid-June, matures in late September and leaves fall in mid-June. Lingwu jujube is vigorous, cold-resistant, salt-tolerant, water-loving and fat-loving, and the fruit cracks lightly when it rains. The fruit is big, thin-skinned, thick, juicy, sweet, colorful, delicious and of high quality. Whether it is fresh or processed, it is an excellent variety, which is most suitable for raw food. The processed jujube has a unique flavor. Disadvantages: few natural fruits, low yield, and intolerance to storage and transportation. It should be developed and popularized in the irrigation area of yellow river diversion. It is suitable for planting in plots and gardens, and strengthening water and fertilizer management can improve the yield and quality of this variety.

2. Dry fine varieties

2. 1 made of wood

1990 introduced rootstock seedlings from jiaxian county, Shaanxi province and planted them in nursery for 2 years. The crown of the tree is round, the tree is half-opened, slightly dry, the tree is stout, the trunk is grayish brown, the bark is longitudinally split and the crack is deep. The first branch of jujube is reddish brown, growing 40~50cm a year. Internodal curvature. The lenticels are large, dense and dark brown. Jujube trees are big, dark gray and conical. Usually, jujube hangs 1~5, the hanging length is 1 1~26cm, and the bearing parts are 5~6 knots. The number of flowers is dense, and each inflorescence has 1~9 flowers. Each hanger has 9~ 17 leaves, which are large, thick and oval. The leaves are 4 ~ 7 cm long and 2.3 ~ 3.2 cm wide, with tapering tips, shallow serrated edges and oblate base. The petiole is 0.3 ~ 0.9 cm long.

The fruit is large and columnar, with a longitudinal diameter of 3.5 ~ 4.6 cm and a transverse diameter of 2.4 ~ 2.8 cm. The average fruit weight 10.3 g and the maximum fruit weight 14.8 g. The surface of the fruit is not smooth, and the peel is thick and dark red. The fruit point is small and significant. The stems in Guangxi are deep and wide, and the top of the fruit is slightly concave. The meat is thick, green and white, dense and hard, with little juice, and the soluble solid content of fresh dates is 27.2%. The core is large and spindle-shaped, with a longitudinal diameter of 2.2cm and a transverse diameter of 0.8 1cm, with an average weight of 0.39g g, and the edible part accounts for 96.2% of the fruit weight. The surface of the nucleus is rough. The groove is shallow, the top length is tapered, the base is short and blunt, and there is no kernel in the nucleus. The quality of fruit is above average, with 48% dry string, which is resistant to storage, transportation and cracking. It is an excellent variety for drying.

The 7-year-old tree is 3 meters high, with a stem circumference of 8 cm at the base and branches spreading 3 meters. Jujube has medium branching ability, strong fruiting ability in the same year, early fruiting period, high and stable yield, and the yield per plant is 7.8 kg. It germinates in May, blooms in June, blooms in mid-June, matures in late September and leaves in mid-June.

This variety has strong tree vigor, large tree body, drought resistance, cold resistance, insect resistance and barren tolerance. Anti-cracking fruit, suitable for dry land and beach cultivation.

2.2 Xiangzao

Originally from Yuncheng, Shanxi. 199 1 year, which is an excellent dry species.

The crown has a round head, strong dryness, moderate tree potential and large tree body. The trunk is grayish brown, the peel is longitudinally split, the split is shallow and easy to peel, the jujube head branch is grayish brown, the annual growth is 30~50cm, the internodes are straight, the lenticels are large and sparse, and the lenticels are yellowish brown. Jujube rootstock is dark gray, rectangular and conical, medium size. Usually, there are 2~6 jujube hangings, the length is 12~23cm, and most of the bearing parts are 6~ 12 knots. Flowers are sparse, with a single flower per inflorescence 1~7. Jujube leaves 1 1~ 17. The leaves are large and thick, oval, 3.5 ~ 6.2 cm long and 1.3 ~ 2.3 cm wide. The apex is tapered, the edge is shallowly serrated, the base is round, the leaves are dark green, and the petiole is 0.2~0.4cm long.

The fruit is large and nearly round, with a longitudinal diameter of 3.9~4.5cm and a transverse diameter of 3.3~3.6cm, with uneven size. The average fruit weight is 18g, and the maximum fruit weight is 25 g. The fruit surface is smooth, the peel is thick and dark red, the fruit point is large and obvious, the depression of the fruit stalk is deep and wide, and the depression at the top is wide and shallow. The meat is thick, white and green, crisp, sweet and juicy, and the sugar content of fresh dates is 26%. The core is small and short, spindle-shaped, with a longitudinal diameter of 1.8~2.5cm, a transverse diameter of 0.5~0.9cm, an average weight of 0.5g and an edible rate of 97%. The edge surface is thick, the ditch is shallow, the tip is short, the base is slightly shallow, the kernel content is 80%, and the seed kernel is not full. The drying rate is 49%, and the meat has elasticity and strong storage and transportation resistance, and can be restored to its original state after being squashed. The disadvantage is that the fruit is not drought-tolerant, and it is easy to crack when it matures in rain.

The 7-year-old tree has a height of 3.0cm and a crown width of 2.6cm. The first branch of the jujube tree has moderate germination ability and strong fruiting in that year. Entering the fruiting period early, the yield is high and stable, with an average yield of 8.4 kg per plant. It germinates in early May, starts to blossom in early June, reaches full bloom in mid-June, matures in late September, and leaves fall in mid-June.

This variety has moderate tree vigor, large tree body, early fruit bearing, high and stable yield, high drying rate and excellent quality. Disadvantages: the fruit is uneven in size, easy to crack when it rains, not drought-tolerant and barren, and suitable for cultivation in places with good water and fertilizer conditions.

3. Excellent choice for raw food and dry food.

3. 1 Junzao

Junzao dates originated from Jiaocheng and other places in Shanxi.

The crown is round, the tree is half open, dry, strong and tall. The trunk is grayish brown, and the epidermis is longitudinally cracked with shallow cracks. The first branch of jujube is reddish brown, growing 40~86cm a year. Internodal curvature. Protruding lenticels, medium size, gray. Jujube stocks are fat, dark brown, oblong and conical, 1~7, generally 3~5. The hanging length is 8~ 12cm, and there are 5~8 knots in many places. There are many flowers, and each inflorescence has 1~7 flowers. Jujube trees have 5~ 15 leaves. The leaves are large, thick and round, 6.6 cm long and 2.9 cm wide, with blunt tips, blunt serrated edges and a round base. Dark green, petiole 0.4 ~ 0.7 cm long, spiny.

The fruit is very large, cylindrical or obovate, with a longitudinal diameter of 5. 12cm and a transverse diameter of 3.67cm, with uneven size. The average fruit weight is 29.5g, and the maximum fruit weight is 47g. There is a saying that "eight feet, ten pounds". The fruit has smooth surface, thin skin and deep red color. The fruit point is large and significant. The stem is shallow and wide, and the top of the fruit is slightly convex. The meat is thick, green and white, dense and crisp, sweet and juicy, and the sugar content of fresh dates is 33%. The nucleus is large and spindle-shaped, with a longitudinal diameter of 3.065438±0cm and a transverse diameter of 0.77cm, with an average nucleus weight of 0.76g and an edible rate of 97.4%. The transverse nucleus is rough, the groove is deep, the apex is long and tapering, the base is long and slightly blunt, and there is no seed kernel. It can be eaten raw, dried and processed into candied dates.

The 7-year-old tree is 3.5m in height, 9.9cm in ground diameter, 2.7m in crown width from east to west and 3.0m in north and south, with an average yield of13.5kg. It germinates in early May. Flowering in mid-June, fruit ripening in late September and defoliation in mid-June.

Jujube trees grow fast, bear fruit early, have large fruit type, high yield, cold resistance, drought resistance and salt tolerance. Disadvantages: when the fruit is ripe, it will crack easily when it rains. In case of drought, young fruits fall easily. And is suitable for large-scale popularization.

3.2 Ningxia Xiaoyuan stove

Ningxia Xiaoyuan jujube, also known as jujube, is a rare local main variety in Ningxia, which is widely cultivated, especially in Zhongning and Zhongwei counties.

The potential of the tree is moderate, the crown is naturally round, the tree posture is relatively open, the branches are thick, the jujube heads are easy to germinate, and the branches are even. The trunk is grayish brown, the bark splits longitudinally, 1~2-year-old branches are grayish white, and the new shoots are 30~45cm long. The lenticels are oval, dense and prominent. Jujube trees are conical and dark brown. Each stock has 1~6 hanging days, and ordinary stocks have 3~4. The fruit-setting part is mostly in the middle. Crane is 7~23cm long and has 8 leaves ~ 19 pieces. The leaves are small and thin, 4.8 cm long and 2.3 cm wide, oval. The leaf margin is blunt and serrated, and the tip is blunt. The petiole is 0.3 ~ 0.4 cm long, and the leaves are dark green and shiny.

The fruit is large, cylindrical and smooth, with a longitudinal diameter of 3.0 1cm and a transverse diameter of 2.6 1cm. Average single fruit weight 10.3g, maximum fruit weight 14.5g, and even fruit size. Thin skin, deep red, small fruit points, dense and obvious. The fruit stalk is 0.4 ~ 0.5 cm long. The pedicel is deep and wide, the top of the fruit is shallow, and there are longitudinal grooves. The flesh is green and white, and the texture is crisp. Juice, sweet and sour, delicious and of high quality. Fresh dates contain 35% sugar. The nucleus is large and conical. Longitudinal diameter 1~76cm, transverse diameter 0.55cm, average nuclear weight 0.3 1g, with nucleoli, accounting for 20%, and the nucleus is not full. Edible rate was 96.9% and drying rate was 43.2%.

The 7-year-old tree has a height of 3.0m, a ground diameter of 7.8cm, a crown width of 2.5m from east to west and a crown width of 2.7m from north to south, with an average yield of 9.4kg It germinates in early May, blooms in June 15-20, matures in mid-September, and leaves fall in mid-June 10.

Ningxia Xiaoyuanzao is cold-resistant, drought-resistant, water-resistant, salt-tolerant, with strong adaptability, early and stable fruit, sweet and sour juice and good quality. It is an excellent variety for raw food and drying. Disadvantages: when the fruit is ripe, it will crack easily when it rains. Can be widely popularized.

3.3 Zanhuang Jujube

Originally from Zanhuang County, Hebei Province, it is the only triploid jujube variety found in China at present.

The crown of the tree is round and the tree is open and dry. The trunk is grayish brown. 1~2-year-old branches are reddish brown, with round lenticels, large and sparse, and protruding yellow and white. Jujube gourd 1 ~ 7, generally 3 ~ 5, length 1 1 ~ 25cm, planting position 5 ~ 10 knots, each gourd 1 ~ 8 fruits. There are 8~ 16 leaves, which are large, thick, oval, 6cm long and 4.9cm wide, and the tip of the leaves is blunt and round. Leaf margin obtuse-serrate. The base is flat, heart-shaped and dark green. The petiole is 0.4 ~ 0.5 cm long and has long spines. There are many flowers, and each inflorescence has 1~9 flowers.

The fruit is large, oblong or oval, with a longitudinal diameter of 3.95cm and a transverse diameter of 3. 12cm. The average fruit weight 18.82g, the maximum is 27.8g, the stem length is 0.4cm, the stem is shallow and wide, the fruit shoulder is flat, the top of the fruit is shallow and concave with longitudinal grooves. The fruit has smooth surface, thick skin and dark red color. Fruit points are large and rare, which is of great significance. The meat is thick, green and white, dense and crisp, the juice is sweet, and the sugar content of fresh fruit is 34%. The nucleus is large and spindle-shaped, with a longitudinal diameter of 3.36 cm and a transverse diameter of 0.86 cm, with an average nucleus weight of 0.67 kg, an edible rate of 95% and a drying rate of 43.2%. Excellent quality, it is an excellent fresh and dried variety, and it is known as "golden jujube".

This variety has high grafting survival rate and vigorous growth. The 7-year-old tree has a height of 3.0, a ground diameter of 8.0 cm, a crown width of 2.5 meters from east to west and 3.0 meters from north to south. The average yield per plant is 9.6 kg, bearing fruit early, grafting in the same year and bearing fruit in the same year. It germinates in early May, starts to blossom in early June, blooms in mid-June, matures in late September, and leaves fall in mid-June.

Zanhuang jujube has moderate vigor, sparse crown, open posture, early fruiting, high fruit setting rate, large fruit, good quality, high and stable yield and light fruit cracking in rainy days. Disadvantages: Self-pollination is poor, so pollinated trees should be prepared when planting. Can be widely popularized.

3.4 Dawukou Jujube

Excellent single plant cultivated in residential building in Dawukou District, Shizuishan City, Ningxia.

The tree has strong potential, open posture, drooping peripheral branches and round crown. The trunk is grayish brown and the epidermis splits longitudinally. The angle of the main branch is large, with an included angle of about 75 degrees. 1~2-year-old branches are grayish brown, with annual growth of 60~80cm and slightly curved internodes, about 5cm long. Dense lenticels and open protrusions. No long thorns, small thorns bent, 0.2 ~ 0.3 cm long. Jujube stocks are large. Short conical shape. Jujube with 1~2 hanging length of 5~52cm is easy to lignify. There are 4~7 flowers in each inflorescence. Results Most of the sites were located in the middle and upper part, with a maximum of 17 and 3-5 in general. Each hanger has 10 ~ 12 leaves. The leaves are thick and rectangular. The leaves are 5.7 cm long and 3.5 cm wide. The blade tip is gradually pointed, the leaf margin is obtuse and serrated, the leaf base is round and wedge-shaped, and the petiole is 0.7cm long. Three veins, prominent, main lateral veins with large angles, green leaves.

The fruit is large and cylindrical, with a longitudinal diameter of 3.4cm and a transverse diameter of 3. 1cm. Average single fruit weight 16.67g, maximum fruit weight 34.2g, and uniform fruit size. The fruit surface is smooth, the skin is thin and dark red, and the fruit point is large and obvious. The stalk is 0.5cm long, deep and wide, the fruit is shallow and concave with longitudinal grooves, and the stigma remains. The meat is thick, green and white, dense and crisp orange. Sweet and juicy, the sugar content of fresh dates is 29%. The nucleus is large, spindle-shaped, with a longitudinal diameter of 2.23% cm and a transverse diameter of 0.85cm, with an average corrected weight of 0.73g and no seeds. The nuclear surface is rough and the longitudinal cracks are deep. The edible rate is 95.62%. The drying rate was 36.3%.

The grafted 7-year-old tree of this variety has a height of 3.0m, a ground diameter of 7.8cm, a crown width of 2.6m from east to west and 2.8m from north to south, and an average yield of10.6kg. It germinates in early May, blooms in mid-June, matures in late September and leaves in mid-June.

Dawukou jujube tree is healthy, open-minded, adaptable, cold-resistant and drought-resistant, with early fruit, large fruit, high and stable yield, and slight fruit cracking in rain. It is an excellent variety of sun-dried and processed candied dates. Disadvantages: due to the large fruit and many fruits, it is easy to drop fruit in the strong wind when it matures, and it matures late. It is suitable for close planting in pieces and can be popularized in a large area in the irrigation area of Yellow River Diversion.

3.5 Tongxin Jujube

It is a local variety in Ningxia, originating from Jiakouzi Village, Jiaoshuihe, Tongxin County. This area is very dry.

The tree is strong, with round crown, open posture and strong dryness. The trunk is grayish brown and the epidermis splits longitudinally. The cracks are shallow and easy to peel off. 1~2 years old branches are grayish brown. The lenticels are large and dense. Gray, protruding, with long thorns. The jujube rootstock is large and conical, with 1 ~ 6 jujube hangers, generally 2~3, and the length of the hangers is 13~29cm. 9~ 18 leaves are hung, and the fruits are mostly concentrated in the middle. The leaves are 6.5cm long, 3.4cm wide, 0.4~0.5cm long and dark green.

The fruit is large and cylindrical, with a longitudinal diameter of 3.72cm and a transverse diameter of 3.43cm. The average fruit weight is 19.04g, and the maximum fruit weight is 22.8g, with uniform size. The fruit surface is smooth, and the fruit points are large and few, which is obvious. Thick skin, deep red; The stem is 0.4cm long, and the depression is deep and wide. The top of the fruit is shallow and concave into the longitudinal groove. The meat is thick, green and white, and the quality is loose and crisp. Fruit juice is rich, sweet and of good quality. The sugar content of fresh dates is 35%. The nucleus is large and spindle-shaped. The longitudinal diameter is 2.2cm, the transverse diameter is 0.85cm, the nuclear weight is 0.86g, the nuclear surface is rough and the groove is deep. The tip is slightly sharp and the base is slightly blunt. No seed kernel. Edible rate was 95.5% and drying rate was 34.8%.

The 7-year-old tree of this variety is 3.2m high, 7.6cm in diameter, 3.0m in crown width from east to west and 2.7m in north and south, with an average yield of 9.4kg per plant. It germinates in early May, blooms in mid-June, matures in late September, and leaves fall in mid-June.

Tongxin jujube tree has vigorous growth, open posture, stout branches, extreme resistance to premature withering, cold tolerance, poor soil tolerance, early fruiting, high and stable yield, and sweet fruit. It is an excellent variety for both raw and edible purposes, with a wide range of applications and can be popularized in a large area.

3.6 jujube

Banzao originated in Jishan County, Shanxi Province, and is an excellent variety that can be eaten raw and dried in the sun.

The tree has moderate potential, small branching angle, weak dryness, round crown and large tree body. The trunk is grayish brown with virtual longitudinal cracks. 1~2 years old is reddish brown with an annual growth of 45~70cm. The internodes are slightly curved, with large lenticels and gray. There are long thorns. The jujube rootstock is grayish brown and conical. Each stock has 1~6 jujube-smoked hangers, usually 3~4 jujube-smoked hangers. Results Most of the sites were 4~8 lymph nodes. Among flowers, each inflorescence has a single flower 1~7. The hanging length is 6 ~ 20 cm, with 4~ 13 leaves. The leaves are small and thick, oval, 3.8 cm long and 2.3 cm wide. Leaf margin obtuse serrate, base round, green. The handle is 0.3~0.4m long.

The fruit is small and oblate. The longitudinal diameter is 2.92cm, the transverse diameter is 2.52cm, the average single fruit weight is 9.44g, and the maximum fruit weight is12.6 g. The fruit has smooth surface, thin skin and deep red color. The fruit point is small and inconspicuous, the fruit stalk is deep, and the top of the fruit is recessed into a longitudinal groove. The meat is thick, green and white. Dense and loose, the juice is sweet, and the sugar content of fresh dates is 32%. The core is small and conical, with a longitudinal diameter of 1.65cm and a transverse diameter of 0.63cm, with an average weight of 0.23g and an edible rate of 97.5%. The nuclear surface is rough, the groove is shallow, the top is short and sharp, the base is slightly dull, and there is no seed kernel. The fruit quality is excellent, and the drying rate is 42%.

The 7-year-old tree of this variety has a height of 3 meters and a DBH of 5 cm. Crown width: 2.5m from east to west and 2.7m from north to south. Jujube head has weak germination ability, strong seed setting and high yield, with an average yield of 8. 1kg. It germinates in early May, starts to blossom in early June, blooms in mid-June, matures in late September, and leaves fall in mid-June.

Jujube has high yield and neat fruit shape, which is an excellent variety for raw and dried. Disadvantages: the fruit is small. Not tolerant of salt and alkali, not tolerant of drought. Choose mild saline-alkali land with fertile soil and convenient irrigation and drainage.

3.7 Jujube

Originated in Xinzheng, Henan Province, it is an excellent variety of raw and dry food.

The crown of this tree is round and open. The trunk is grayish brown and the bark splits longitudinally. 1~2-year-old branches are reddish brown, and new shoots grow 50 ~ 80 cm. The internodes are curved, and the lenticels are small and dense. There are long thorns. The rootstock of jujube is relatively large, 1~5, generally 3~4, with a hanging length of 8~ 19cm, and the fruit setting is mostly in the middle and upper parts. The leaves are 7~ 15, 4.7 cm long and 2.25 cm wide. The leaves are small, medium thick, rectangular, serrated and dark green. The petiole is 0.4 ~ 0.5 cm long.

The fruit is small and rectangular, with a longitudinal diameter of 3.28cm and a transverse diameter of 2.43cm. The average fruit weight is 9.43g, and the maximum fruit weight is10.4 g. The pedicel is 3-0.4 cm long. The fruit surface is smooth and orange-red. The fruit point is remarkable. The stem is shallow, the stem ring is wide, the fruit shoulder is flat, the fruit top is flat or slightly concave, and the stigma remains. The meat is thick, thin, white and green, juicy, sweet, dense and crisp. The sugar content of fresh dates is 35%. The nucleus is small and slender, spindle-shaped, with a longitudinal diameter of 2.04cm and a transverse diameter of 0.8 1cm, with an average nuclear weight of 0.44g, accounting for 20%. Benevolence is not full. The edible rate is 95.33%. The drying rate is 39.5%. Dried jujube pulp is bare and of good quality.

This variety has been widely introduced and cultivated in our region, with early fruiting and high yield. The 7-year-old tree is 3.0m in height, 6cm in DBH, 2.2m in crown width from east to west and 2.3m in north and south, with an average yield of 6.5kg It germinates in early May, blooms in early June, blooms in mid-June, matures in late September and leaves in mid-June.

The grey jujube tree has vigorous growth, sparse branches, early fruiting, high yield and excellent fruit quality, and is a dual-purpose variety for raw food and drying. Trees are drought-resistant, barren and saline-alkali-resistant, and crack slightly when it rains. Disadvantages: small fruit and low yield. Can be properly developed.

4. Zhongwei jujube, an excellent variety for processing candied dates.

Both Zhongwei County and Tongxin County in Ningxia are distributed. 199 1 year introduced rootstock seedlings from Wangtuanzhuang Township, Tongxin County.

The village crown is round, tree-shaped and slightly dry. This tree has moderate potential and large volume. The trunk is gray, the epidermis is longitudinally cracked, the crack is deep and easy to peel off. The branches were brownish green, growing 40~70cm a year, with curved internodes and vigorous growth, small and dense lenticels, oblate and prominent. The secondary branch has 3~7 nodes and is 12 ~ 45 cm long. The node length is 5~ 10cm, and it is gray. Jujube trees are black, medium-sized and conical. Usually, 1~5 dates are extracted. The hanging length is 6~20cm, with 5~ 1 1 leaf. The leaves are 5.5 cm long and 3 cm wide. Results There are 4~6 nodes in the flower department, and the number of flowers is relatively dense. Each inflorescence has 1~7 single flowers. The leaves are oval, the leaf margin is obtuse and serrated, the base is round, the leaves are green, and the petiole is 0.3 ~ 0.5 cm long. The acupuncture is bigger.

The fruit is large, oval, uniform in size, with a longitudinal diameter of 3.92cm and a transverse diameter of 3.47cm. The average fruit weight is 19g, and the maximum fruit weight is 26 g. The fruit surface is smooth, the skin is thin and dark red, the fruit points are dense and obvious, the fruit stalk ring is shallow and wide, the top of the fruit is slightly concave, the stigma remains, and the pulp is green and white, and the quality is dense and loose. Less juice, light taste, soluble solids 25%. The nucleus is big, spindle-shaped, sharp, with a longitudinal diameter of 2.36cm, a transverse diameter of1.1cm, a nucleus weight of 1.00g, and an edible rate of 94.74%. The surface of the nucleus is rough and the groove is shallow. There is a kernel, not full. Anti-cracking fruit is an excellent variety for processing candied dates.

The 7-year-old tree has a height of 3.3 meters, a branch spread of 2.7 ~ 3.3 meters and a trunk diameter of 6.5 cm. The first jujube sprouted moderately and was vigorous. The yield of 7-year-old trees is above average. The average yield per plant of 7-year-old trees is 1 1.2kg, which germinates in late April, starts flowering in late May, blooms in mid-June, matures in late September and leaves in mid-June.

This variety has moderate tree potential, open tree shape, cold and drought resistance, water, humidity and salt tolerance, and high and stable yield. Fruit has low sugar content and less water, so it is an excellent variety for processing candied dates and drying.