Asparagus is a perennial crop. At the end of winter and early spring, the above-ground plants are senescent and yellow, and are in a dormant state. However, the underground roots continue to move and accumulate nutrients. Good foundation. Reapplying the overwintering fertilizer after the autumn harvest of asparagus must be reapplied in stages to meet the needs of underground root mass growth. After picking bamboo shoots in autumn, cut off the yellow female stems and remove them from the field to burn them. Apply overwintering fertilizer twice in the "Lidong" and "Winter Solstice" respectively. Organic fertilizer is the main one. Use 1000-2000 kg of soil and miscellaneous fertilizer, 100-200 kg of calcium, magnesium and phosphorus, and 20-30 kg of ammonium bicarbonate per mu each time. Pour peanut cake, bone meal, etc., after fully fermented, apply it to the border of the border separately in furrows or holes, and minimize damage to the stored roots when digging holes. "Lichun" fertilizer is applied once more, using 20-31 kg of compound fertilizer per acre mixed with 2 to 3 kg of borax or potassium dihydrogen phosphate, or urea mixed with potassium chloride or soil miscellaneous fertilizer with 50-60 dan for hole application to promote tenderness. The stem is unearthed and grows. Watering must be carried out after each fertilization, and watering once every 6 to 7 days in the dry season. Disinfecting the garden from "big cold" to "Beginning of Spring", depending on the degree of yellowing of the above-ground plants, cut off the plants successively, thoroughly clean the stems, leaves, dead branches, weeds, etc. of the plants, remove them from the field and burn them, and remove the bamboo shoots and surrounding weeds Net, eliminate overwintering parasites and pathogenic bacteria. In the first fertilization, the cultivating soil at the base of the plant can be properly peeled off until after the second fertilization, usually after the "Beginning of Spring", all the cultivating soil should be wiped off in sunny weather. When cultivating the soil, be careful not to damage the basal scales and buds. Remove the remaining stems and expose to the sun for 1 to 2 days, and use 3kg per acre to spread the whole garden, or spray the soil and roots with 40% asparagus green 600 times solution to eliminate overwintering pathogens and reduce pathogens Base, the purpose of reducing the occurrence and epidemic of diseases in the coming year, and then covering 5-6 cm thick sand. For acidic bamboo shoots orchards, 50 to 75 kg of quicklime can be sprayed per mu to neutralize the acidity of the soil. The root system of Qinggou anti-soil asparagus is fleshy root. If the soil water content is too much, it will be susceptible to freezing damage or root rot in winter, which will affect the yield and quality of asparagus. Therefore, it is necessary to clear the ditch in time and lower the groundwater level to prevent the occurrence of water damage and root rot. Prevention and control of plant diseases and insect pests The main plant diseases and insect pests during the wintering period of asparagus are stem blight, aphids and cutworms. The methods to prevent stem blight are: cleaning ditches, lowering the groundwater level, applying less nitrogen fertilizer, increasing phosphate fertilizer and soil miscellaneous fertilizers, and spraying it with 70% thiophanate methyl or 50% carbendazim 600 to 800 times. Aphids can be sprayed with 50% phoxim EC 1000 times or 10% imidacloprid wettable powder 1000 times. Cutworms can be controlled by methods such as poison bait, trapping by stacking grass, or manual capture. Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. phone Tetanus Toxoid Vaccine,Toxoid Vaccine,Hep B Immune Globulin,Immunoglobulin Injections FOSHAN PHARMA CO., LTD. , https://www.pharmainjection.com