Many people are often worried that the use of chemical fertilizers in successive years will result in the consolidation of the soil. Many promotional materials are also misleading. Soil compaction was a thing that happened in the early 1950s, especially in low-yielding fields with low organic matter. The reason is very simple, because at that time there were few domestically produced fertilizers, and the main nitrogen fertilizer imported was ammonium sulfate. When ammonium sulfate is applied to the soil, the ammonium ions exchange the calcium ions adsorbed on the soil colloidal particles, and the calcium ions combine with the sulfate ions to form insoluble calcium sulfate.
For a long time, calcium sulfate deposits in the soil and gradually plugs the pores of the soil; in addition to the low content of organic matter in the soil, the soil itself is not loose and the soil is hardened.
Now that nitrogen fertilizers have been renewed, they are no longer a single ammonium sulphate, but the main varieties are ammonium bicarbonate and urea. These two types of chemical fertilizers do not contain any by-products. They do not leave any residue in the soil. In the matter, there will be no problem of blocking the pores of the soil and causing the compaction.
At present, under the premise of implementing China's fertilizer technology policy and taking the path of organic fertilizer and fertilizer application, many situations have changed, so this worry is unnecessary. In general, applying chemical fertilizers will not cause soil compaction. The reason is:
1) Due to the rational use of organic fertilizer, although the amount per acre is not much, it has played a certain role in improving soil properties and enhancing the ability of water conservation and fertilizer maintenance; 2) Crop straw directly returning to soil or soil organic matter covered by straw to overcome The soil compaction issue has played a positive role; 3) While increasing the yield, the residual amount of crop roots has also increased accordingly, and it also plays an important role in curing the soil and eliminating the compaction.
Therefore, it can be concluded that as long as the organic fertilizer is applied in combination with chemical fertilizers, soil compaction will not occur even if the amount of fertilizer is increased. On the contrary, soil fertility will continue to increase, providing good conditions for crop yields.
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