| 不同水氮处理对棉花养分吸收分配的影响 |
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| 引用本文： | 周永萍,田长彦,王平.不同水氮处理对棉花养分吸收分配的影响[J].干旱区资源与环境,2009(6). |
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| 作者姓名： | 周永萍 田长彦 王平 |
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| 作者单位： | 中国科学院新疆生态与地理研究所;中国科学院研究生院; |
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| 基金项目： | 中国科学院知识创新工程重大项目(KZCX2-XB2-03-02);;新疆自治区重大专项课题(200731133-2)资助 |
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| 摘 要： | 研究了南疆不同水氮处理对棉花N,P,K的吸收分配状况的影响。结果表明:大田水氮管理中前期(蕾期—花期)养分吸收受到一定的抑制作用,吸收量及净吸收率减小,之后与其他施氮处理之间无显著差异,优化施氮处理与常规施氮处理之间养分吸收差异均不显著。随着生育进程,养分分配由营养器官逐渐转向生殖器官,施氮处理中养分分配差异均不显著。优化施氮处理明显降低了施氮量,但产量和养分摄取量基本不受影响,施氮处理中每100Kg皮棉所吸收的N:P2O5:K2O的范围是1:0.32~0.33:1.10~1.14。
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| 关 键 词： | 优化施氮 养分吸收 养分分配 |
Effects of different treatments of water and N on the cotton nutrient absorption and distribution |
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| ZHOU Yongping,TIAN Changyan,WANG Ping.Effects of different treatments of water and N on the cotton nutrient absorption and distribution[J].Journal of Arid Land Resources and Environment,2009(6). |
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| Authors: | ZHOU Yongping TIAN Changyan WANG Ping |
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| Institution: | 1.Xinjiang Institute of Ecology and Geography;Chinese Academy of Sciences;Urumchi 830011;P.R.China;2.Graduate School of Chinese Academy of Sciences;Beijing 100039;P.R.China |
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| Abstract: | This research analyzed the nutrient absorption and distribution of cotton in South Xinjiang.The results indicated that the nutrient absorbing in crops was restrained by nitrogen and water in budding and flowering phases,and absorbing content and net absorbing rate reduced.After then there were no remarkable discrepancy with control.The difference between nutrient absorbing of optimized nitrogen application and general treatment was not remarkle.With cotton growth,the nutrient distributed from nutrition orga... |
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| Keywords: | optimized nitrogen nutrient absorption nutrient distribution |
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