The Effect of Soft Rock and Sand Compound on Soil Nutrient and Environment Enzyme Activity

Abstract

In order to study the improvement effect of the Mu Us sandy land in northern Shaanxi, this paper takes the Xiaojihan land improvement project in Yulin City as the research background, and sets up the experiment of 3 kinds of soft rock and sand compound ratios (1:1, 1:2, 1:5) In the plot, statistical analysis methods were used to compare the physical and chemical properties of soil and soil enzyme activities under different treatments. The results show that the addition of soft rock has a significant effect on soil texture and available nutrients, and it increases with the increase of soft rock content. Compared with the original sandy land, the content of water-stable aggregates (<0.25) increases by 42.3%, which is quick-acting the phosphorus content was increased by 89.9%, the available potassium content was increased by 22.3%, and the enzyme activity of the cultivated soil was significantly improved. Among them, the correlation between soil phosphatase and the physical and chemical properties of the soil is relatively high, and it can be used as a measure for judging the fertility of the compound soil index.