We have seen the varied characteristic of nutrient residual quantity of slow release fertilizer in soil, Both possess activity of slow release in sand or clay soil.
从缓释肥料在土壤的养分残留量变化特点看出，无论在砂质或粘质土壤中，均具缓释作用。
2
When we only applied phosphate fertilizer the curve of the ultra clay limit at the acidic field fell considerably below the sticky limit curve and the plastic limit curve fell also.