随着耗竭试验的继续，各处理土壤磷库含量都呈下降趋势。
Following with the exhaust test, the content of soil phosphorus storage of each treatment showed a declining tendency.
养分耗竭后，施用足量肥料能逆转土壤有机质耗竭的趋势。
When nutrients have been depleted, addition of adequate fertilizers can reverse the trend of soil organic matter depletion.
在摇瓶和土壤耗竭条件下研究了硅酸盐细菌NBT菌株的解钾作用以及对作物生长的促进作用。
Shaking flask and pot experiment were carried out to study the dissolution of feldspar and growth promoting of the plants by the strain NBT of silicate bacterium.
进入耗竭阶段后，土壤全氮又不同程度的下降，只是不同处理变化速度不同而已。
Total-N was declined with different speed during the exhausted stage. Farm manure, chemical fertilizer and straw had different sustainable effects.
进入耗竭阶段后，土壤全氮又不同程度的下降，只是不同处理变化速度不同而已。
Total-N was declined with different speed during the exhausted stage. Farm manure, chemical fertilizer and straw had different sustainable effects.
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