土壤酶活性与无机肥用量关系研究初报

本文初步研究了土壤酶活性与无机肥用量的相互关系。结果表明,在有机肥基础上配施无机肥对土壤酶的激活效应比无机肥单施效果好;无机肥用量与土壤酶激活效应之间存在临界关系。无机肥的临界用量可作为特定土壤、某一肥力水平或某种作物的推荐用量。

A PRELIMINARY STUDY OF RELATIONSHIP BETWEEN ENZYME ACTIVITY OF SOIL AND AMOUNT OF INORGANIC FERTILIZER APPLIED

The relationship between enzyme activity of soil and amount of inorganic fertilizer used was preliminarily studied in this paper. Results showed that the effect of inerganic fertilizer on enzyme activation of soil was less when it was used alone than together with organic fertilizer, and that there was a eritical relationship between the amount of inorganic fertilizer and soil enzyme activation. Hence the critical amount of inorganic fertilizer could be its recommended amount to certain kind of soil, fertility level or crop.