Soil nitrogen balance and nitrogen utilization of winter wheat affected by straw management and nitrogen application in the Yangtze river basin of China

被引：21

作者：

Tian, Zhongwei ^{[1
]}

Ge, Yaoxiang ^{[1
]}

Zhu, Qing ^{[1
]}

Yu, Jinhong ^{[1
]}

Zhou, Qin ^{[1
]}

Cai, Jian ^{[1
]}

Jiang, Dong ^{[1
]}

Cao, Weixing ^{[1
]}

Dai, Tingbo ^{[1
]}

机构：

[1] Nanjing Agr Univ, Minist Agr, Key Lab Crop Physiol Ecol & Prod Management, 1 Weigang, Nanjing 210095, Jiangsu, Peoples R China

来源：

ARCHIVES OF AGRONOMY AND SOIL SCIENCE | 2019年 / 65卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Wheat; straw management; N fertilizer; N use efficiency; N balance; CROP RESIDUE MANAGEMENT; USE EFFICIENCY; GAS EMISSIONS; TILLAGE; FERTILIZER; YIELDS; MANURE; IRRIGATION; QUALITY; SYSTEM;

D O I：

10.1080/03650340.2018.1479743

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Straw incorporation is a useful management practice in sustainable agricultural systems to improve soil fertility and to reduce air pollution from straw burning. A three-year field experiment was conducted under two rice straw managements and four nitrogen (N) application rates in Rugao, China during 2010-2013, to examine whether straw management practices integrated with fertilizer N applications affect crop yield, N balance and N use efficiency in the wheat season of rice-wheat cropping systems. The results showed that straw incorporation had positive effects on plant N uptake and grain yield. This may be attributed to the greater soil water content and lower amount of seasonal rainfall. However, straw incorporation resulted in lower soil inorganic N and more N surplus at the early growth stage. Grain yield had a significant relation with wheat N uptake from sowing to jointing and from jointing to anthesis with straw incorporation. Therefore, our results suggest that in adjusting the ratio of basal and topdressing N fertilizer, it is important for the supply of optimum N to the crop and to maintain grain production with straw incorporation.

引用

页码：1 / 15

页数：15

共 34 条

[1] Managing crop residue with green manure, urea, and tillage in a rice-wheat rotation [J].