您好，欢迎访问江西省农业科学院 机构知识库！

Rice yield, potassium uptake and apparent balance under long-term fertilization in rice-based cropping systems in southern China

文献类型： 外文期刊

作者： Zhang, Huimin 1 ; Xu, Minggang 1 ; Shi, Xiaojun 2 ; Li, Zuzhang 3 ; Huang, Qinghai 4 ; Wang, Xiujun 5 ;

作者机构： 1.Chinese Acad Agr Sci, Key Lab Crop Nutr & Fertilizat, Minist Agr China, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China

2.Southwest Univ, Dept Resource & Environm, Chongqing 400715, Peoples R China

3.Jiangxi Acad Agr Sci, Inst Soils Fertilizers & Agr Resources, Nanchang 330200, Peoples R China

4.Inst Red Soils Jiangxi Prov, Jinxian 331717, Peoples R China

5.Univ Maryland, Earth Syst Sci Interdisciplinary Ctr, College Pk, MD 20740 USA

关键词： Apparent K balance;Long-term fertilization;Potassium uptake;Rice yield

期刊名称：NUTRIENT CYCLING IN AGROECOSYSTEMS （ 影响因子：3.27； 五年影响因子：3.767 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Potassium (K) imbalances are of growing concern in southern China, where rice (Oryza sativa L.) is the primary food resource for a growing population. This study examined rice yield, K uptake and apparent balance under long-term fertilization in rice-based systems at four experimental sites, including both rice-rice as well as rice-wheat rotations. The experiments consist of four treatments: control (no fertilizer), nitrogen and phosphorus (NP), nitrogen, phosphorus and potassium (NPK), and NPK plus manure (NPKM). Across all sites, rice yields increased by 3-20% due to K fertilization (NPK vs. NP) and 4-20% due to manure application (NPKM vs. NPK). The mean internal K use efficiency (IE) was lower (32-56 kg kgp#) in treatments receiving K (NPK and NPKM) than in those without K application (36-91 kg kgp#control and NP). Estimated from the logarithmic model, a total K uptake of 38-212 kg hap# was needed to produce 3-7 Mg hap# of rice grain. The annual apparent K balances were negative (17-245 kg hap# yearp#), irrespective of mineral K application and site. But the negative K balance reduced by 27-88 kg hap# yearp# through application of mineral K in combination with manure. The higher negative apparent K balances under rice-wheat cropping system were related to the lower K application rate and the soils rich in K-bearing minerals, while the lower negative apparent K balances under rice-rice cropping system were related to the higher K application rate and the soils low in K-bearing minerals. We conclude that a re-adjustment of the current K application rate is needed to improve the long-term rice production in southern China.

  • 相关文献

[1]Functional soil organic matter fractions in response to long-term fertilization in upland and paddy systems in South China. Yang, Fan,Zhou, Yi,Yang, Fan,Tian, Jing,Fang, Huajun,Yang, Hao,Meersmans, Jeroen,Lou, Yilai,Li, Zhongfang,Liu, Kailou,Blagodatskaya, Evgenia,Blagodatskaya, Evgenia,Kuzyakov, Yakov,Kuzyakov, Yakov. 2018

[2]Interactive effects of temperature and moisture on CO2 and CH4 production in a paddy soil under long-term different fertilization regimes. Huang, Shan,Sun, Yanni,Yu, Xichu,Zhang, Weijian.

[3]Fertilization increases paddy soil organic carbon density. Wang, Shao-xian,Liang, Xin-qiang,Chen, Ying-xu,Wang, Shao-xian,Luo, Qi-xiang,Fan, Fang,Li, Zu-zhang,Sun, Huo-xi,Dai, Tian-fang,Wan, Jun-nan,Li, Xiao-jun. 2012

[4]Effects of organic amendments on soil carbon sequestration in paddy fields of subtropical China. Xu, Minggang,Wang, Xiujun,Wang, Xiujun,Huang, Qinhai,Nie, Jun,Li, Zuzhang,Li, Shuanglai,Hwang, Seon Woong,Lee, Kyeong Bo. 2012

[5]Long-term fertilization effects on active ammonia oxidizers in an acidic upland soil in China. Wang, Xinli,Zhong, Wenhui,Wang, Xinli,Han, Cheng,Zhang, Jinbo,Deng, Huan,Deng, Yongcui,Zhong, Wenhui,Han, Cheng,Zhang, Jinbo,Deng, Huan,Deng, Yongcui,Zhong, Wenhui,Huang, Qianru.

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：江西省农业科学院

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