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Rape winter and spring field management
First, the application of drought seedlings promotes transformation. It is necessary to make full use of the effective growth period before winter and use topdressing as the main means to promote the escalation of seedlings potential. The application of available nitrogen fertilizers is dominant, and phosphorus and potassium can also be used to supplement phosphorus and potassium. According to the different seedlings to master the amount of fertilizer, but not too far. Second, re-apply La fat to fight early. The overwintering period is an important stage in flower bud differentiation of rape, laying a branch number and knot angle. At the same time, the short-handleed leaves born during this period are the main time slices affecting the stability of rape. Reusing wax fertilizer can not only promote more roots and more long leaves in rape during the wintering period. To achieve the purpose of winter strong, but also make part of the fertilizer used in spring, so that rape early after the spring. The combination of organic fertilizer and inorganic fertilizer will make the fertilizer deeper and increase fertilizer efficiency. Third, stable application of fertilizers to promote high yields. Feifei is a key fertilizer that promotes long spring rape, strong ridges and strong branches, and strives for more horns. According to the characteristics of this year's seedlings and the temperature conditions after the spring, the principle of rational fertilization is based on the principles of early development and long-term stability. For fields where there is insufficient wax fertilizer, poor growth potential, and a trend of de-strength, the fertilizer must be re-applied as early as possible; for the heavy-duty, large-leaf and long-emerging fields, the fertilizer must be applied or the seedlings must be applied. . Fei Fei should be applied at a height of 2 to 3 inches. It is better not to be late. Fourth, cultivator soil antifreeze damage. In combination with topdressing, timely cultivating and loosening of the arable land should be done in order to thicken the rhizosphere, increase the temperature by absorbing heat, and enhance the antifreeze ability of the seedlings. At the same time, cultivating loose soil and enhancing soil permeability are conducive to the exertion of fertilizer efficiency. Five, open a good ditch to prevent spring stains. After opening the ditch in the first crop, especially the rapeseed transplanted in the plate, we must promptly open the inner third ditch and the outer third ditch. The internal and external furrows are matched to prevent waterlogging and diseases in the spring. In addition, rape seedlings are small this year, the leaf coverage rate is low, and weeds are easy to breed and spread. It is necessary to seize the time and use artificial and chemical elimination to eliminate overwintering weeds.