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一、过量使用化肥的危害1、导致农产品质量下降。由于农田大量施用单元素化肥,其养分不能被作物有效地吸收利用。氮、磷、钾等一些化学物质易被土壤固结,使各种盐分在土壤中积累,造成土壤养分失调,部分地块的有害重金属含量和有害病菌量超标,导致土壤性状恶化,作物体内部分物质转化合成受阻,使农产品品质降低。超量使用化肥使果蔬生长性状低劣,并且容易腐烂,不宜存放。2、导致粮食和农产品安全受到威胁。过量使用化肥极易使庄稼倒伏,而一旦出现倒伏,就必然导致粮食减产,暴的在同撒入
First, the dangers of excessive use of fertilizers 1, leading to decline in the quality of agricultural products. Due to the large amount of single-factor fertilizer applied to farmland, nutrients can not be effectively absorbed by crops. Some chemicals such as nitrogen, phosphorus and potassium are easily consolidated by the soil, causing various salts to accumulate in the soil, resulting in the imbalance of soil nutrients. The content of harmful heavy metals and harmful bacteria in some plots exceeds the standard, resulting in the deterioration of soil properties. Obstruction of material conversion synthesis, so that the quality of agricultural products to reduce. Excessive use of fertilizers so that the growth of poor performance of fruits and vegetables, and perishable, should not be stored. 2, resulting in the threat of food and agricultural product safety. Excessive use of fertilizers can easily make the crop lodging, and once there lodging, it will inevitably lead to food production, violence in the same scattered