Rape fertilization before winter or winter, first, can promote the slow growth of winter rapeseed, and enhance the ability of winter rape cold resistance; Second, the fertilizer used in winter and spring, conducive to early spring rape rape; Third, can reduce the spring fertilization, to prevent excessive spring fertilizer Rapeseed is prosperous in the later stage of rapeseed; Fourth, it can make full use of winter rain and snow conditions to avoid the difficulty of applying fertilizer in spring drought; Fifth, top-dressing in the cold season can increase fertilizer utilization rate and reduce production costs.
Rape winter fertilization, in order to circle fertilizer, soil miscellaneous fertilizer, pig manure and other warm-keeping farmer's fertilizer is the main, according to rape seedlings grow, can be properly added carbonamines, ammonium chloride and other fertilizers. Immediately after fertilization, cultivators and weeds were used to cultivate and cover fertilizers to prevent freezing of rapeseeds and loss of fertilizers.
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