DECOMPOSITION AND INTERACTIONS AMONG WHEAT RESIDUE COMPONENTS

被引：42

作者：

COLLINS, HP

ELLIOTT, LF

RICKMAN, RW

BEZDICEK, DF

PAPENDICK, RI

机构：

[1] USDA ARS, COTTON RES STN, SHAFTER, CA 93263 USA

[2] WASHINGTON STATE UNIV, DEPT AGRON & SOILS, PULLMAN, WA 99164 USA

[3] USDA ARS, LAND MANAGE WATER CONSERV RES, PULLMAN, WA 99164 USA

来源：

SOIL SCIENCE SOCIETY OF AMERICA JOURNAL | 1990年 / 54卷 / 03期

关键词：

D O I：

10.2136/sssaj1990.03615995005400030026x

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

Describes winter wheat residue components and chemical composition, and assesses the effect of mixing residue levels were measured on 20 field sites having grain yields ranging from 1 to 6 Mg ha-1. Residue was positively correlated with grain yield for the 1984 and 1985 crop years. Residue-to-grain ratios averaged 1.47 for 1984 and 1.17 for 1985. Ratios of stem, leaf sheath, chaff, and leaf blades averaged 37:30:20:13. Total C and N, soluble C, and nonstructural carbohydrate concentrations were not correlated with residue or grain yield. Comparison of single- and multiple-term exponential decay models showed that a single-term model adequately described decomposition of wheat residues. -from Authors

引用

页码：780 / 785

页数：6