随着社会的发展,化肥的使用对作物增产有显著的提高,但长期单纯使用化肥造成土壤贫瘠板结,污染地表水。地表植被破坏,土壤沙化速度加剧,造成农业生态环境恶化。我国农田施肥大都高氮低磷钾施肥,农民只知道上了尿素就增产,没有尿素、磷铵、硫铵也可以,常年的往地里施氮肥,虽然增 With the development of society, the use of chemical fertilizers has significantly increased the crop yield, but the long-term use of chemical fertilizers alone results in poor soil compaction and surface water pollution. Surface vegetation damage, soil desertification intensified, resulting in deterioration of agro-ecological environment. Most of China’s farmland fertilizers are mostly high-nitrogen, low-phosphorus and potassium fertilizers. Peasants only know that they can increase production of urea without urea, ammonium phosphate and ammonium sulfate. Nitrogen fertilizers are often used throughout the year,