Why should chemical fertilizers be applied deep? The main reasons are these
What are the benefits of deep application of chemical fertilizers? What depth is suitable for fertilizer application? How should chemical fertilizers be applied deeply? The following brief introduction from Gengzhongbang Planting Network is for netizens' reference. Quite a few farmer friends, when fertilizing crops, take the easy way out and fear trouble, so they scatter chemical fertilizers on the field surface, causing serious loss of fertilizer efficiency, and at the same time...
What are the benefits of deep application of chemical fertilizers? What depth is suitable for fertilizer application? How should chemical fertilizers be applied deeply? The following brief introduction from Gengzhongbang Planting Network is for netizens' reference.Quite a few farmer friends, when fertilizing crops, take the easy way out and fear trouble, so they scatter chemical fertilizers on the field surface, causing serious loss of fertilizer efficiency, and at the same time worsening environmental pollution. The crops also cannot get the corresponding nutrient requirements, leading to reduced crop yields. Therefore, farmer friends should change this poor fertilization method and apply chemical fertilizers deeply. This can not only reduce volatilization loss of fertilizers and improve fertilizer use efficiency, helping crops absorb and use them better, but also reduce environmental pollution and achieve the effect of increasing yield and income. According to experiments, after deep application of nitrogen fertilizer, the average use efficiency can increase from 30% to 40%; deep application of phosphorus and potassium fertilizers can reduce wind erosion loss, promote crop absorption, prolong fertilizer efficiency, and the yield increase rate can generally reach 5%-15%.
1. Seed fertilizer: As seed fertilizer, the chemical fertilizer applied is generally first buried under the seeds or below the side, and an appropriate distance should be kept between the fertilizer and the seeds, generally 3-5 cm, to avoid burning the seeds. Therefore, for chemical fertilizer used as seed fertilizer, a fertilization depth of 5-6 cm is suitable.
2. Topdressing: When topdressing is applied, the plant root system has already initially developed and formed. If mechanical topdressing is used, root damage should be minimized as much as possible, the fertilization depth should not be too large, and the horizontal distance from the plant (side distance) should also be appropriate. In general, for inter-row topdressing, the suitable topdressing depth for narrow-row crops such as wheat is 6-8 cm, and for wide-row crops such as corn the suitable topdressing depth is 8-12 cm, with a suitable side distance of 10-15 cm.
3. Base fertilizer: The effective period of base fertilizer is in the later stage of crop growth. At this time, the crop root system has already matured, the plants are tall and dense, and topdressing in the root zone is difficult to operate. The main reliance is on the base fertilizer applied during pre-sowing land preparation. Deep application of base fertilizer is often 15-20 cm or deeper. Fertilizing at the plow sole is a simple and easy good method. There are mainly two methods: one is to first scatter the fertilizer on the surface and then plow it into the soil; the other is to apply the fertilizer into the furrow at the same time as plowing, that is, furrow application during plowing.
The above is Gengzhongbang Planting Network's introduction to the benefits and methods of deep application of chemical fertilizers. If you have better additions, please leave a message below to tell us.