【摘要】 土壤分室是 N、P、K的主要贮存库 ,分别占土壤—植被组分中该元素总贮量的 90 .2 %、98.7%和 99.6% .土壤分室中 ,N、P质量分数和贮量随着深度的增加而减少 ,而 K在不同土层差异不明显 ;果树分室中 ,三元素质量分数最高为叶片 ,贮量最高为根部 ;地被物分室中 ,三元素质量分数地上部高于地下部 ,贮量 N素地下部高于地上部 ,而 P、K地上部高于地下部更多还原

【Abstract】 In soil part system, which is the main storeroom of N, P, K, the storage accounts for 90.2%, 98.7% and 99.6% , respectively, of the total in soil vegetation system, and with the increasing of depth the mass fractions and storage of N, P decrease but those of K do not vary obviously. In fruit tree part system, the highest mass fractions of N, P, K are in the blade and the highest storage is in the root. In vegetation (grass) system, the mass fractions of N, P, K aboveground are higher, and the storage of N underground is higher but that of P, K aboveground is higher.更多还原