土壤肥力是土壤的基本属性和质的特征,是土壤从养分条件和环境条件方面,供应和协调作物生长的能力。田间试验结果表明,作物产量的构成有40％～80％的养分吸自土壤,要提高作物产量,首先要提高土壤肥力,只有在高肥力的条件下,才能达到高产,稳产。但长期以来,在农业生产中由于受短期效益“思想的影响”人们只顾眼前增产,不讲科学种田,单靠施用过多的氮素 Soil fertility is the basic and qualitative characteristics of soils and is the ability of soils to supply and coordinate crop growth in terms of nutrient and environmental conditions. The results of field trials showed that 40% ~ 80% of the composition of crop yield was absorbed from the soil. To increase crop yields, we must first increase soil fertility and achieve high yield and stable yield only under conditions of high fertility. However, for a long time, due to the short-term benefits of “thinking” in agricultural production, people only focus on the immediate increase in production, do not speak of scientific farming, rely on the use of excessive nitrogen