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The winter rapeseed is good
1, can be insulation and cold-applied fertilizer with more phosphorus and potassium to do wax fertilizer, can increase the ground temperature 2-3 °C, can increase the potassium content of plant cells, enhance the water holding capacity of the cells, so that the plants are not easy to freeze at low temperatures . In addition, the concentration of salt in the soil solution can also be increased, and the degree of damage to the rape root system can be reduced. 2. To promote the growth of Brassica rapa L. rapeseed bud stage is the period of vegetative growth and reproductive growth, is the period of rapeseed to absorb nitrogen and potassium nutrients, the application of wax fertilizer can ensure the supply of phosphorus and potassium nutrients during this period, Promote effective branching and increase in the number of pods. 3. The flowering period and mature stage of rapeseed spring rape are the period with the most vigorous reproductive growth. The absorption of phosphorus is at its peak, and it is also necessary to absorb a certain amount of nitrogen and potassium nutrition. In spring, the temperature rises rapidly and the humidity is high. Applying chemical fertilizers will cause the plants to go mad, causing lodging and disease. The application of bio-organic fertilizer-based wax fertilizer, energy continuously release nutrients, the need for later growth and development of rape, so as to promote rape to achieve the purpose of spring stability. The application amount of wax fertilizer depends on the seedling condition, the seedlings are good, organic fertilizer is applied more, and the insulation is the main; if the seedlings are poor, more fertilizer is applied to provide nutrients. In general, 1200-1500 kg organic fertilizer is applied in Mushi, and 10-15 kg of phosphate fertilizer is applied. Due to the lack of nitrogen canola yellowing prematurely, urea added 5-6 kg. Organic fertilizers have a large volume and should be applied in the field before the rapeseed line can be easily handled. Fertilizers or human wastes that are mixed with water are generally applied from the winter to the Osamu.