Astragalus is a perennial herb of the legume family and is an important medicinal resource. In recent years, artificial cultivation of jaundice technology has developed rapidly and has become a good project for developing high-efficiency agriculture and raising farmers' income in hilly and mountainous regions. Let's talk about the key technical measures for the cultivation of Huangqi. One, deep plowing, adding organic fertilizer. Choose sandy soil with deep soil, fertile soil, good fertility, good drainage, and strong water permeability. Dip deep, dig drainage ditches around, and use sweet potatoes, radishes and corn as well. Do not choose soybean meal or peanut ground. . Mu Shi quality circle fertilizer 10,000 kg, compound fertilizer 100 kg, combined with deep turning, applied to the bottom. Second, select good varieties for seed treatment. Select high-quality and high-yield polyploid line Wen Huang11. Seed treatment should be conducted before sowing. The method is as follows: dry seeds of 2/3 of the dry seeds (grilles smaller than seeds) are ground on the stone mill for 60-70 cycles, rolled while rolling, and rolled uniformly until the seed coat is brown. Black darkens. After this treatment, soaking seeds for 5 hours, the water absorption swelling rate reached more than 90%. Water scouring, direct sowing. Third, shallow broadcast cover soil, along the ridge push. The spring and winter sowing seasons are available for Huang Yuchun. It is advisable to use the end of March to the beginning of April. In a well-grounded area, a shallow trench of 2 cm depth was opened at a distance of 33 cm from the row. The treated seeds were evenly spread in the trenches, and the soil was covered with 2 cm. Then, the seedlings were pressed and pressed again. Use no more than 1 kilogram per acre and no more than 2 kilograms of water swelling seeds. Fourth, appropriate time Dingmiao, proper watering, early picking buds heart. When the Astragalus seedlings are about 7 cm high and 3/4 times of the compound leaves, thinning is carried out; when the seedling height is about 10 cm, the seedlings are set and the spacing is 10-13 cm. Astragalus is resistant to drought and generally does not require watering. If there is a special drought, it can be properly watered. When the humidity is high in the rainy season, it should be drained in time. The flower buds were removed in time, and the head of the inflorescence was about to be used to promote the supply of nutrients to the roots. Fifth, grasp pest control. The pests that cause damage to the jaundice include Mongolian grey weevil, beetle, reticulated net, seed fly, aphid, and soybean meal. For the first three, the use of trichlorfon, peanut cake and water in the proportion of 0.1:2:2 dubbed poison baits spread on the ground in the sunny morning or gutter control. Seed flies can be used 80% of the dimethoate emulsion 1000 times to water around the roots of the affected plants. Locust, sprayed with 40% Dimethoate 1500 times, the effect is better. Soybean meal occurs from mid-June to late September, and can be sprayed with 50% dichlorvos 1000 times liquid to kill adult insects in the evening of adult stage, or 800 times liquid is sprayed during the early incubating period of larvae to kill larvae. The diseases that damage the jaundice are mainly powdery mildew and purple feather disease. To clean the garden to deal with the diseased plants, powdery mildew, the beginning of the onset of spraying the US-lithium sulfur agent. Purple feather disease can be used 5% lime milk irrigation disease points or lime powder applied around the sickle to prevent spread. Six, timely harvest. Huangqi can be harvested 3-4 years after sowing, but the quality is less than 5-6 years old. Usually harvested during the beginning of winter, when the harvest time will be cut off the ground, open the ditch in the side of the gills, the root planing, drying and standby, be careful not to break the root.
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