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A Study of the Nutrient Liberation of the Forest Soil Minerals on the Ecological Rock(Ⅰ)──AStudy of the Potassium Liberation of the Forest Soil Minerals on the Feldspathic Rock

Xiang Shiqing; Dai Wei(College of Forest Resources and Environmnent, BFU)  
By studying the potassium liberation of the forest soil minerals on the felds-pathic rock, the results indicating the quantity and rate of potassium liberated, the degree ofthe weathering, the quantity of the slowly available potassium and the years of slowly avail-able potassium liberated have been obtained.It proved that the potassium quantity in the for-est soil on feldspathic rock may meet the needs of the trees, and it also completed the studyof the balance of revenue andexpenditures in the forest nutritive cycle.
【CateGory Index】: S714.8
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