Effect of Rice-Based Cropping System on Organic Matter Status in Soils

被引：3

作者：

XIAO YONGLAN

ZHANG YANGZHU

HU RUIZHI

HUANG YUNXIANG

ZHOUQING

YUAN ZHENGPING Department of Natural Resources Hunan Agricultural University Changsha China YANG DONGPING Soil and Fertilizer Center of Northern District of Yueyang Municipali ^{[410128
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机构：

来源：

Pedosphere | 1997年 / 04期

关键词：

degree of organo-mineral complexing; organic matter; rice-based cropping system; Se availability;

D O I：

暂无

中图分类号：

S154 [土壤生物学];

学科分类号：

071012 ; 0713 ;

摘要：

A long-term simulation experiment was carried out to study the effect of rice-based cropping system,green manure and ground-water level on soil organic matter. Soil organic matter content increased when upland soil was puddled and cropped under submerged conditions. Among all treatments, soil organic matter contents in the treatments of rice-rice-flooded fallow in winter (WF) were the highest, those in the treatments of rice-rice-astragalus (WG) came the second, and those in the treatments of rice-rice-rape (WR)were the lowest. At the same rate of green manure application, the degrees of organo-mineral complexing in soils of treatments WG and WR were higher than those of treatment WF. After 9-year rice cultivation, the state of combination of humus in heavy fraction varied with treatments. The relative content of loosely bonded humus decreased in the order of WR > WG > WF, and it correlated significantly with Se availability.

引用

页码：349 / 354

页数：6