在富难溶性磷土壤上，施用磷细菌肥可以提高土壤速效磷含量。
In the rich sparingly soluble phosphorus soil. Phosphorus bacteria fertilizer could increase the content of soil available phosphate.
土壤施用沸石后，可以提高土壤保肥能力，活化土壤中难溶性磷，改良土壤结构。
Zeolites application can increase fertilizer use efficiency and nutrient preserving capability of soil.
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。
Organic acids can improve soil phosphorus availability by affecting the inorganic phosphorus fraction and mobilizing soil sparingly soluble phosphate.
溶磷微生物是一类参与土壤磷循环的重要微生物类群，它们能够将土壤中的难溶性磷转化为有效态磷。
Phosphorus solubilizing bacteria in soil plays an important role in phosphorus cycling and converting insoluble phosphate into soluble forms.
有机活化剂的用量，用于难溶性磷促释时其质量分数为3%，用于水溶性磷控释时其质量分数约为14%。
The feasible mass fraction of organic activation agent is 3% for hard-soluble P but 14% for water-P.
SFCW由于使所有水流不断与土壤层、砾石层和豆石层反复接触，生成难溶性磷酸盐的几率大大高于SFCW，能够比SFCW更加显著地促进磷沉积。
W-SFCW system, which provides more interaction surfaces for wastewater to react with soil, oval stone and small-sized stone layers, showed higher chances to form insoluble phosphate than SFCW.
因此，难溶性的无机磷向可溶性磷的转化和有机磷的生物矿化对植物的磷素营养是十分重要的。
As the result, it is important to convert insoluble P into soluble P and to release P from lecithin .
在酸碱性土壤中，磷主要以植物难以吸收利用的难溶性二价或三价阳离子的形式存在。
In acid and alkali soil, there are mainly indissoluble bivalent or trivalent phosphates, which cannot be utilized by plants.
在酸碱性土壤中，磷主要以植物难以吸收利用的难溶性二价或三价阳离子的形式存在。
In acid and alkali soil, there are mainly indissoluble bivalent or trivalent phosphates, which cannot be utilized by plants.
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