您好，欢迎访问吉林省农业科学院 机构知识库！
吉林省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Long-Term Fertilizer Experiment Network in China: Crop Yields and Soil Nutrient Trends

文献类型： 外文期刊

作者： Zhao, Bing-qiang 2 ; Li, Xiu-ying 2 ; Li, Xiao-ping 2 ; Shi, Xiao-jun 3 ; Huang, Shao-min 4 ; Wang, Bo-ren 5 ; Zhu, Pi 1 ;

作者机构： 1.Rothamsted Res, Harpenden AL5 2JQ, Herts, England

2.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China

3.Southwest Univ, Coll Resources & Environm, Chongqing 400716, Peoples R China

4.Henan Acad Agr Sci, Inst Plant Nutr Environm & Resources, Zhenzhou 450002, Henan, Peoples R China

5.Chinese Acad Agr Sci, Hengyang Red Soil Expt Stn, Hengyang 421001, Hunan, Peoples R China

6.Jilin Acad Agr Sci, Ctr Agr Environm & Resources, Gongzhuling 136100, Jilin, Peoples R China

7.NW Univ Agr & Forest Sci, Coll Resources & Environm Sci, Yangling 712100, Shaanxi, Peoples R China

8.Xinjiang Acad Agr Sci, Inst Soils & Fertilizers, Urumqi 830091, Xinjiang, Peoples R Chin

关键词： manure;soil fertility;crop yield;soil acidification;single cropping system;double cropping system;crop production sustainability;soil nutrient trend;triple cropping system

期刊名称：AGRONOMY JOURNAL （ 影响因子：2.24； 五年影响因子：2.829 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Results are summarized for the first 15 yr of an eight-site, long-term experimental network in China designed to assess the sustainability of cropping systems in environments representing 70% of Chinese cropland. Systems were wheat-maize double cropping (two crops per year) at four sites, wheat-rice double cropping, rice-based triple cropping, and wheat or maize single cropping. Without fertilizers, wheat yields were mainly <= 1 t ha(-1), and maize yields were >= 2 t ha(-1). With NPK fertilizer (rates averaging 154, 33, and 54 kg ha(-1) per crop of N, P, and K, respectively), wheat yields mainly ranged from 5 to 7 t ha(-1), and maize yields ranged from 6 to 9 t ha(-1). Without P fertilizer, yields declined (up to 4 t ha(-1) less than with NPK), and Olsen-P values in soil declined, although rates differed between sites. Decreasing yields from withholding K usually emerged more slowly. The results emphasize the value of long-term experiments to reveal trends in soil fertility not apparent within a few years and the need for research in these environments to define "critical concentrations" of plant-available P and K in soil for maintaining maximum crop yields. Results with manures show the risk of overfertilization and water pollution with N and P if inorganic fertilizer applications are not decreased to take account of nutrients from manure. At two sites, there was evidence of significant N and P inputs from irrigation water. At one site, the addition of N fertilizer gradually caused soil acidification; this caused inefficient utilization of nutrients and led to crop failure.

  • 相关文献

[1]Response of Organic Nitrogen in Black Soil to Long-term Different Fertilization and Tillage Practices in Northeast China. Yan, Li,Li, Hui,Zhang, Jinjing,Zhang, Zhidan,Gao, Qiang,Yan, Li,Lu, Wenxi,Li, Hui,Zhu, Ping.

[2]Identification of quantitative trait loci for leaf area and chlorophyll content in maize (Zea mays) under low nitrogen and low phosphorus supply. Cai, Hongguang,Chu, Qun,Yuan, Lixing,Liu, Jianchao,Chen, Xiaohui,Chen, Fanjun,Mi, Guohua,Zhang, Fusuo,Cai, Hongguang.

作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：吉林省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台