A good grasp of winter field management of rapeseed is conducive to the normal growth and development of rape, and increase rapeseed production.
1. Cultivate weeds and soil. Rape can be used for cultivating and weeding soil during wintering, which can loosen the soil and thicken the root soil layer, which has a certain effect on blocking cold wind invasion and improving the ability of endothermic insulation and drought resistance. Especially after cultivating earthworms, shortening the roots and stems can increase the resistance to lodging, help increase the soil temperature, protect the roots, and promote the growth of roots, laying a foundation for spring development in the coming year.
2, re-opening fertilizer. In mid- and mid-December, after the middle tillage and weeding application, mainly farmyard manure, 40-50 mu of livestock and manure water was used to divert 20-25kg of special fertilizer or 10-12kg of urea was used to remove 1200-1500kg of manure water. Winter is strong and grows after spring.
3, do a good job of pest control. The focus is on controlling aphids, followed by cabbage caterpillars, downy mildew, and sclerotia.
4. Clean up the trenches. Prevent water accumulation in the ditch, reduce humidity in the field, and prevent waterlogging in the field.
5. Remove early moss and frozen leaves. For plants that have emerged as early as early moss, remove the moss core in time and pick the length of the furrow to remove the part that may flower in winter, usually 3-5 cm. After picking the moss, it is best to topdress once. The main available nitrogen fertilizer, combined with phosphorus and potassium fertilizer, accelerate wound healing and promote branching. If the rape has been frozen, it should remove frozen leaves, moss, and quickly apply vegetation ash or phosphorus and potassium fertilizers to promote wound healing.
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