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.