It is not suitable to apply more organic fertilizer to vegetables
Traditional agriculture advocates that vegetable fields should apply a large amount of organic fertilizer, and some vegetable farmers even think that the more organic fertilizer, the better. However, according to the results of many experiments in various places in recent years, the appropriate application of organic fertilizer can effectively control the nitrate content of vegetables, while the blind application of organic fertilizer will cause the nitrate content of vegetables to exceed the standard. Excessive nitrate content in vegetables may cause direct harm to human health. Therefore, the nitrate content in vegetables must be strictly controlled to ensure the safety of eaters. For example, the application amount of high-quality farm manure in vegetable field should be controlled at 3000-5000 kg per mu, generally not more than 6000 kg.
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Benefits of combined use of organic fertilizers
Organic fertilizer is an indispensable fertilizer source in vegetable production, which plays an important role in improving soil fertility, providing nutrients and improving vegetable product quality, and has been paid more and more attention in pollution-free vegetable production. However, at present, there are still some misunderstandings in the application of organic fertilizer.
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The application of organic fertilizer is enough.
Bio-organic compound fertilizer, which uses the combination of organic fertilizer and inorganic fertilizer, accompanied by a variety of microorganisms or high-energy compounds, is very popular among farmers, and the effect is obvious. first, it can improve the physical and chemical properties of soil, enhance the performance of water and fertilizer conservation, and improve the ability of sustainable fertilizer supply; second, it can significantly inhibit cotton and melon.
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