Jujube, Polygonatum sibiricum and Gracilaria lemaneiformis are called "three treasures" in Lianzhou. Let's start with the date. More than 6666 hectares of purple soil in Lianzhou are developed by red sand shale. This purple soil is loose and rich in phosphorus and potassium, which provides a unique condition for Lianzhou jujube production. Two streams running down from the deep mountains have nourished this fertile land for many years, and the rolling mountains make jujube flowers fragrant. Farmers working and living in purple soil have improved and domesticated jujube trees for more than 500 years. The sugar content of rectangular fresh jujube is 22%, and the sugar content of round pile fresh jujube is 365,438+0%, with rich sweet juice, crisp and soft skin and small core. China Native Products Dictionary calls it "the excellent material for making candied dates". The mass production of Lianzhou candied dates began at 1956. The production technology of candied dates is fine, scientific and hygienic, including selecting dates, scraping dates, boiling dates, refining sugar, stuffing and twisting dates. Jujube should be selected with uniform particles, no moth, no spots and no damage, and the jujube skin has turned from green to white but not red, which is close to maturity. Select jujube, and cut the jujube peel longitudinally with a row of needles (to facilitate the infiltration of sugar); Boil jujube in boiling water, then cool it with clear water to remove the green flavor, and then make candied fruit. Pomegranate sugar produced in Jiangmen is used to make candied dates, and the syrup is refined according to the ratio of 50 kg sugar and 15 kg water. When the syrup is refined to golden yellow, immediately cook the jujube, and stir it with slow fire until the jujube is yellow. 12 hours later, make the twisted jujube into a dustpan shape, dry it with a solar dryer, and then bag it in stages. Lianzhou candied dates, with the trademark of "Pearl River Brand", were listed as national export products at 1958 and exported to Hong Kong, Macao and Southeast Asian countries. 1990, Lianzhou candied dates were included in the scope of national famous local products in China Dictionary of Local Products. Its simple and generous packaging highlights the rich customs of northern Guangdong. Delicious, sweet and refreshing, it is a typical Lingnan-style snack with nourishing, beautifying and enlightening effects. Except Polygonatum sibiricum Polygonatum sibiricum is a Liliaceae plant, which likes to grow in the shade of Shan Ye. Its branches and stems are slender, its leaves are narrow and lanceolate, its flowers are axillary, cool and white, and its posture is beautiful. Polygonatum sibiricum has the functions of strengthening spleen, moistening lung and benefiting kidney. As for its name, Li Shizhen, a famous doctor in the Ming Dynasty, thought it was "named Polygonatum because of its essence of kuntu". Every spring and autumn, Lianzhou drug farmers go up the mountain to dig drugs. If Polygonatum sibiricum is dug out, it can be called Polygonatum sibiricum, Polygonatum bletilla or Polygonatum multiflorum according to its different shapes. After the medicinal materials are purchased, they are steamed, dried, beaten and dried. If so, they are brewed until they turn black. It was wrapped in art paper before, and it was a local product "Lianzhou Polygonatum". Lianzhou Polygonatum is marketed at home and abroad. Some people once thought that pink paper packaging was too corny, so they switched to plastic paper packaging. As a result, there are few buyers. So old packaging was used and sold as well as before. In 1990s, some wineries brewed Polygonatum glutinous rice wine with glutinous rice, Polygonatum sibiricum and spring water, which was in short supply. It is said that this wine is sent to a hotel mall in the provincial capital, and everyone who drinks it says it is a good thing. The mall wanted to put it on the shelves for sale, but gave it up because it was cheap. Finally, let's talk about asparagus. There is a wild plant on the purple hillside around Xing Zi Town and Dalubian Town in Lianzhou City. They are in groups, fluttering gently in the breeze like the beards of dragons. This is the famous Gracilaria lemaneiformis. Speaking of Gracilaria lemaneiformis, there is a fascinating legend circulating in the local area: In ancient times, after Huanglong, who loved his people as a son, became immortal, the Jade Emperor ordered him to ascend to heaven to seal the emperor. North Korean officials and the Li people could not bear to let Huanglong go. They grabbed his robe and beard and tried their best to keep him. But how can Huanglong disobey the destiny? Had to leave. As a result, the dragon corolla turned into a purple mountain, while the dragon whiskers landed on the hillside and grew into green grass ... Gracilaria lemaneiformis is a perennial herb with strip leaves and small flowers. Purple soil is very shallow, and the topsoil is easily taken away by rain. Gracilaria lemaneiformis takes root and grows in such a place, which plays a great role in protecting the ecological environment. Gracilaria lemaneiformis is also a high-quality raw material for paper industry. At first, Lianzhou Paper Mill used Gracilaria lemaneiformis as the main raw material to process 1 typed paper. This kind of typing paper won the first place in the province's quality appraisal. The stems and leaves of Gracilaria lemaneiformis can also be made into hemp fiber, rope and straw sandals. Therefore, some areas are also called grass or grass.