肥料之间有“相生”关系,也有“相克”矛盾。比如多施磷肥,多余的有效磷与土壤中的有效锌结合形成难溶性的磷酸锌沉淀,而引起土壤有效锌的缺乏。不仅如此,多余的有效磷还会抑制作物对氮的吸收,引起氮的缺乏。又比如多施钾肥,多余的钾会减少作物对氮、镁、钙、硼和锌的吸收,引起农作物体内缺乏这些营养元素。即使是有机肥也不可过多施用。如果施用过多,土壤中 There is a relationship between fertilizers, and there are also contradictions between each other. For example, more phosphate fertilizer, excess available phosphorus and zinc in the soil combine to form insoluble zinc phosphate precipitation, causing the lack of available zinc soil. Not only that, the excess of available phosphorus will also inhibit the crop’s absorption of nitrogen, causing a lack of nitrogen. Another example is the more potassium fertilizer, excess potassium will reduce crop nitrogen, magnesium, calcium, boron and zinc absorption, causing the lack of these crops in vivo nutrient elements. Even organic fertilizer should not be applied too much. If applied too much, soil