By cultivating indoor and planting corn in pot with Soda-alkali soil derived from Xiyanchi in Shanyin county of Shanxi province by the design method of compete random block

the experiment studied the effect of the soil phosphorus after use DS-1997

sulfur-removal gypsum

weathering-coal in soil. As were shown by the followings:(1)All of this three conditioners could decrease Soda-alkali soil pH value;(2)It showed soil EC value rapidly and the content of soil readily available phosphorus decreased after sulfur-removal gypsum was put into soil. So sulfur-removal gypsum could inhibit release of soil phosphorus;(3)DS-1997 could boost up the activity of soil decompose-phosphorus microbe

phosphate-enzyme

swell release of soil phosphorus than the other two.