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Insulation and antifreeze application of farmer fertilizer with more phosphorus and potassium as wax fertilizer can increase the ground temperature by 2 °C ~ 3 °C, increase the potassium content of plant cells, enhance the water holding capacity of the cells, and make the plants not easy to freeze at low temperatures, free from freezing damage. . In addition, the application of organic fertilizer can also increase the concentration of salt in the soil solution and reduce the damage degree of rape roots.
Promoting the growth and development of rapeseed buds The rapeseed bud period is the period in which the phosphorus and potassium nutrients are most absorbed by rapeseed. The application of wax fertilizer can ensure the supply of phosphorus and potassium nutrients in this period, thus promoting the growth and development of rapeseed and increasing the number of effective branches and pods.
The spring and rape stage of rapeseed is the most vigorous period of reproductive growth. The absorption of phosphorus reaches a peak, accounting for about 60% of the whole growth period, and also absorbs a certain amount of nitrogen and potassium nutrition. In the spring, the temperature rises quickly and the humidity is high. If the quick-acting fertilizer is applied, the plant will grow wild, causing lodging and disease. The application of organic fertilizer-based wax fertilizer, the energy source continuously releases nutrients, and supplies the late growth and development of rapeseed, so as to achieve the purpose of stable spring rape.
The application rate of wax fertilizer is determined by the condition of the seedlings. The seedlings are good, and the application of coarse fertilizer is mainly based on heat preservation. If the seedlings are poor, more fertilizer is applied to supply nutrients. Generally, 1200-1500 kg of soil-fertilized fertilizer or 700-800 kg of decomposed pig cow manure is applied per mu, and 10-15 kg of superphosphate is applied. For rapeseed that is prematurely yellowed due to lack of nitrogen, 400 kg of manure and 5 to 6 kg of urea are applied per mu. The application time of the fertilizer should be determined by the fertilizer due to the seedlings. The larger soil fertilizer and the early application of the pig cow manure must be applied before the rape is sealed and the field is easy to operate. The quick-acting chemical fertilizer or human excrement applied with water is generally applied from the winter solstice to the small cold. Fertilization must be combined with cultivating soil and roots to bury the fertilizer in the soil.
Author: Li Xia
Source: Farmers Daily
Rape, wax fertilizer, antifreeze and growth
The application of wax fertilizer in rapeseed is an important measure to increase production. Its role is mainly reflected in the following three aspects:
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