Nitrogen mineralization and crop uptake of N from decomposing 15N labelled red clover and yellow sweetclover plant fractions of different age

被引：0
|
作者：
Maria Wivstad
机构：
[1] Swedish University of Agricultural Sciences,Department of Crop Production Science
来源：
Plant and Soil | 1999年 / 208卷
关键词：
green manure; Melilotus officinalis; 15N mineralization; plant fraction; spring wheat; Trifolium pratense;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Nitrogen mineralization from 15N labelled red clover (Trifolium pratense L.) and yellow sweetclover (Melilotus officinalis Lam.) plant fractions of three different ages (8-, 14- and 20-week old) was studied in an out-door pot experiment during 8.5 months. Individual plant fractions (leaves/stems/roots/flowers), 23 g dry matter pot-1 (corresponding to 7300 kg ha-1), were incorporated into a sandy soil. The net mineralization of N was measured as 15N recovery in spring wheat (Triticum æstivum L.), perennial ryegrass (Lolium perenne L.) following the wheat and in the soil mineral N pool.
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页码：21 / 31
页数：10
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