健康的食品来自于健康的土壤,加强土壤污染防治,科学合理使用农药,对污染土壤进行修复和保障农产品质量安全具有重要意义。一、土壤氮磷钾元素营养比例失调在日常管理中绝大多数农民不按比例施肥,往往只施大量氮磷肥,导致钾素匮乏。长期不施中微量元素肥料,造成土壤中微量元素耗竭、土壤中大量氮磷钾比 Healthy foods come from healthy soil, strengthen soil pollution prevention and control, use pesticides scientifically and rationally, repair contaminated soil and ensure the quality and safety of agricultural products. First, soil N, P and K nutrient imbalances In the daily management of the vast majority of farmers not to proportionate fertilization, often only a large amount of nitrogen and phosphorus fertilizer, leading to lack of potassium. Long-term application of trace element fertilizer, resulting in the depletion of trace elements in the soil, a large number of soil nitrogen, phosphorus and potassium ratio