Estimating on-farm wheat yield response to potassium and potassium uptake requirement in China
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- 作者：Ai Zhana ; Chunqin Zoua ; Youliang Yeb ; Zhaohui Liuc ; Zhenling Cuia ; cuizl@cau.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Xinping Chena
- 关键词：Kreq ; potassium requirement per Mg grain yield ; HI ; harvest index ; KHI ; potassium harvest index ; PFPK ; partial factor productivity of applied K ; REK ; apparent recovery efficiency ; AEK ; agronomic efficiency
- 刊名：Field Crops Research
- 出版年：2016
- 出版时间：May 2016
- 年：2016
- 卷：191
- 期：Complete
- 页码：13-19
- 全文大小：1076 K
文摘
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Potassium application increased grain yield, but excessive application did not maintain the high yield increase rate.
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Under recommended potassium treatments, potassium uptake requirements decreased with increasing grain yield.
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Increasing potassium accumulation during post-anthesis growth stage is key to increasing grain yield.