At present, many farmers' friends are afraid of troubles when fertilizing crops. They spread chemical fertilizers on the surface of the fields, causing serious losses in fertilizers and fertilizers. At the same time, they increase environmental pollution, and crops do not receive corresponding nutrient requirements, resulting in crop yield reduction. Therefore, farmers' friends should change this bad fertilization method and achieve deep application of chemical fertilizers, which can not only reduce the loss of chemical fertilizers, improve the utilization rate of fertilizers, but also facilitate the better absorption and utilization of crops, while at the same time reducing environmental pollution and increasing production. The effect of increasing income. According to the test, the average utilization rate of nitrogen fertilizer after deep application can be increased from 30% to 40%. The deep application of phosphorus and potassium fertilizer can reduce the loss of wind erosion, promote crop absorption and prolong fertilizer efficiency, and the yield increase can generally reach 5% to 15%.
The deep application of chemical fertilizer can be divided into the following three categories: There are two methods for deep application of bottom fertilizer and deep application of bottom fertilizer: one is to first plow and then to plow; the other is to apply fertilizer to the furrow. The second method is better. The depth of fertilization is required to be 6 cm, the width of the fertilizer belt is 3 to 5 cm, and the fertilizer is evenly continuous without obvious broken strips.
When applying deep fertilizer to deep application, it is required to form a certain thickness between the seed and the fertilizer, generally more than 3 cm, to meet the nutrient demand of the crop seedling growth, and avoid the occurrence of burning and burning.
The deep application of topdressing and topdressing is to take the method of opening a small ditch or drilling a hole between 10 and 20 cm on both sides of the crop line. The depth is 6-10 cm, the fertilizer bandwidth is more than 3 cm, and the soil is covered after fertilization.
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