Snow cultivation techniques
1, seedbed preparation. Select loose and fertile soil, good conditions for drainage and irrigation, and convenient transportation for the seedbed. After the seedbed is ploughed, the soil shall be fully exposed, and the compost, coke ash, manure and urine, and phosphate fertilizer shall be used as the base fertilizer, and the seedbed shall be well-reconstructed. 2, sowing and nursery. Autumn sowing date from late August to early September, sowing season of spring vegetables from mid-October to October 25, after raining in the morning or early evening sowing, the general amount of mu with 0.4 ~ 0.5kg, pouring water before planting, after sowing, Covering or coke ash about 0.5em, after covering the soil with butachlor 500 ~ 800 times spray anti-weed. Autumn Lai should cover the grass moisturizing, after emergence and strive to Miao Qi, Miao uniform, Miao Zhuang. 3. Site preparation and planting. Snow amaranth is not strict on the soil, and it is better to use water and fertilizer to protect the loam. The basal fertilization is applied during soil preparation. Generally, the kerf is 1.5 meters wide, the kerf is 30cm wide, and the kerf is 30cm deep. The mullet surface is flat, fine and no weeds. After the lotus root is made, about 15cm in seedling height, with 5 to 6 true leaves, the weather is transplanted. The spacing is 35cm, the plant spacing is 30 to 35cm, and the mu planting is 4000 to 5000 strains. With soil transplanting, to reduce injury, planting does not make the root twisted, vacant; timely watering after planting, in order to facilitate survival. 4, water and fertilizer management. After planting, prevent drought, prevent floods, prevent drought when there is little rain, and do a good job of drainage when it rains. The product organs of sericulture are leaf petioles, nitrogen fertilizer is the main fertilizer, phosphorus and potassium fertilizer are supplement, base fertilizer is 80%, and topdressing is 20%. The general mu compound fertilizer 50kg, ammonium bicarbonate 50kg calcium magnesium phosphate fertilizer 15kg, potassium chloride fertilizer 10kg. Phosphorus and potassium fertilizers should be applied at the seedling stage and later stage, and each crop should be topdressed for 3 to 4 times, from light to thick. Pay attention to topdressing after 5 to 7 days after planting, and combine fertilization with seedlings. Early autumn vegetables have high temperatures and fast growth. They must top-dress fertilizers in time. Spring vegetables should not be re-fertilized before spring, and people should be watered and fertilized in time after spring. Watering fertilizer is stopped 20 days before harvest to improve quality. 5, pest and weed control. After the planting and planting of Brassica campestris, the field weeds in Daejeon grow to 2 leaves and 1 heart to spray the plant to prevent the grass from harming. Disease is mainly a virus disease, to prevent worms as the focus, to prevent the main, to supplement the rule. When the temperature is high, the net is used once a week to prevent and control once. The yellow larvae of the flea beetles endangered the roots and were treated with phoxim ion. The cabbage caterpillar, etc. are treated with cypermethrin and other agents. The drug was stopped 20 days before harvest. 6. Picking and harvesting should be done after clear dew and dried harvest. The annual output of autumn vegetables is 4000kg/mu and the spring vegetables are 5000kg/mu. Autumn vegetables are harvested around December, generally not bolting; Spring vegetables harvested before and after Qingming, has begun to bolting, when the moss is about 5 ~ 10cm is appropriate. To ensure product quality.