Organic fertilizer can regulate the soil, fertilize the soil and improve the quality of crops. Fertilizers are targeted, and if the soil lacks any elements, special fertilizers will be applied and the results will be quick.
However, long-term use of chemical fertilizer will cause environmental pollution. The nitrate content in groundwater increased rapidly and the water body was eutrophicated. In addition, the excessive use of chemical fertilizer in farmland not only increases the input cost, but also leads to the crazy growth of crops. The nutrient supply of fertilizer to crop straw is not conducive to crop growth.
A large amount of chemical fertilizer will lead to soil compaction and the death of a large number of soil microorganisms.
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The mixed application of organic fertilizer and chemical fertilizer is conducive to give full play to the role of organic fertilizer, maximize crop yield and quality, and improve economic benefits. The mixed application of organic fertilizer and chemical fertilizer has the following advantages.
1. Improve the efficiency of soil and fertilizer. When organic fertilizer is mixed with chemical fertilizer, it can absorb organic fertilizer, reduce loss and improve overall fertilizer efficiency.
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2. The mixed application of organic fertilizer and chemical fertilizer can reduce the side effects of chemical fertilizer, increase the buffer capacity of soil and prevent acidification. Calcium superphosphate in chemical fertilizer contains too much free acid, which will affect seed germination and seedling production. After adding organic fertilizer, the free acid can be neutralized and the harm to seeds can be reduced.
3. Mixed organic fertilizer can increase crop nutrition. Organic fertilizer has comprehensive nutrients, long-term fertilizer efficiency and multiple organic matter, which can improve soil organic matter content and physical and chemical properties.
4. Adding chemical nitrogen fertilizer to organic fertilizer can avoid the effect of early nitrogen deficiency on crop growth.