Optimum depth for each fertilization period
1, seed fertilizer
October 09 00:01:47, 2018
As a seed fertilizer, the applied fertilizer is generally applied to the lower part or the lower part of the seed in advance, and the fertilizer and the seed should be kept at an appropriate distance, generally 3-5 cm, to avoid burning the seed. Therefore, as a fertilizer for seed fertilizer, the depth of fertilization should be 5-6 cm.
2, top dressing
The roots of the plants have been initially developed when applying topdressing. If mechanical topdressing is used, the roots should be minimized, the depth of fertilization should not be too large, and the horizontal distance (side distance) from the plants should be appropriate. Under normal circumstances, between the line of topdressing, narrow crops such as wheat, the depth of topdressing is 6-8 cm, wide crops such as corn, the depth of topdressing is 8-12 cm, the side spacing is 10-15 cm is appropriate. .
3, the base fertilizer
The action period of the base fertilizer is in the late stage of crop growth. At this time, the root system of the crop is mature, the plant is tall and dense, and the root zone top dressing is difficult to operate, mainly relying on the base fertilizer applied during the preparation of the soil before sowing. The bottom fertilizer is often 15-20 cm or more. Plowing bottom fertilization is a simple and easy way to do it. There are two main methods: one is to spread the fertilizer on the surface and then plow the soil into the soil; the other is to plow the fertilizer while applying the fertilizer to the furrow, that is, when plowing.
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