A detailed analysis of the high yield of watermelon red is as follows:

High-yielding, high-starch sweet potatoes generally have a yield of 4,000 to 5,000 kilograms per 667 square meters, and high yields can reach more than 10,000 kilograms. Spring fresh potatoes The starch content reaches 25~33%. (1) Xiangfu No. 1. This variety is bred through cross-radiation selection.

The stems and vines are short and thick, the leaves are heart-shaped, without notches, and there are many branches at the base. The stems and leaves have strong growth potential, are resistant to fertilizer and drought, and have wide adaptability. Sweet potatoes can be grown wherever they can be grown; The potato pieces have red skin and white flesh. They produce potatoes early and concentrated, and the yield is high and stable. The maximum yield of spring potatoes per 667 square meters can reach about 4,000 kilograms, and the maximum yield in the community demonstration area can reach more than 8,000 kilograms.

In 2001, it was tested by China Agricultural University and the starch content of fresh spring potatoes was 33%. 1, the dryness rate is above 40. (2) Transcendence966. The vines are long, the growth potential is strong, the leaves are large, green, and the veins on the back are purple; the potato pieces are mostly spindle-shaped or round, with concentrated tubers, purple-red skin, and white or white-yellow flesh; spring potatoes generally have a yield of 5,000 kilograms in 667 square meters. Around 9,000 kilograms, the starch content reaches 25 to 27, and the dry rate is 43.

6. The yield of summer potatoes is about 4,000 kilograms, and that of autumn potatoes is about 2,000 kilograms. It should be planted in ridges, and vines should not be pruned during the entire growth period. (3)86-21. Its characteristics are similar to those of Xiangfu 1. Red skin, white flesh, early and concentrated potato formation, high-yield cultivation of 667 square meters, yield of about 6,000 kilograms, starch content of 25, and dry rate of 37.

(4) Yushu "868". High yield, stable yield, drought resistance, fertilizer resistance and barrenness resistance. Generally, the yield per 667 square meters is more than 4,000 kg. The starch content of spring fresh potatoes is 24% and the sun-drying rate is 37%. Red skin, white flesh, sweet taste, no vine plowing during the whole growth period, high potato yield, concentrated tubers, and tuber tubes resistant to storage; suitable for sparse planting in large ridges.

(5) Yushu Disease Resistance No. 1. The potato pieces are spindle-shaped, with dark red skin, white flesh, and good flour quality. The stems and leaves have strong growth potential, the leaves are enlarged, and the vines are thicker in length. The base has many branches, high and stable yields, and concentrated tubers. The yield is about 5,000 kilograms in 667 square meters. The starch content of spring potatoes is as high as 28%, and the sun-drying rate is as high as 43%.