The organic matter in soil contains a small but fairly uniform proportion of phosphate.
土壤有机质中含有少量的磷酸盐，且其比例始终不变。
2
Organic acids can improve soil phosphorus availability by affecting the inorganic phosphorus fraction and mobilizing soil sparingly soluble phosphate.
有机酸通过影响土壤中无机磷组分，促进难溶性磷酸盐溶解，从而提高土壤磷的有效性。
3
It was studied that the effect of different kinds of organic acids and their concentrations on the soilphosphate absorbing capacities by way of isothermal absorption in the brown soil.