Rapid and nondestructive estimation of the nitrogen nutrition index in winter barley using chlorophyll measurements
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- 作者：Ben Zhaoa ; zhaoben517@163.com" class="auth_mail" title="E-mail the corresponding author ; Zhandong Liua ; Syed Tahir Ata-Ul-Karimb ; Junfu Xiaoa ; Zugui Liua ; Anzhen Qia ; Dongfeng Ninga ; Jingqin Nana ; Aiwang Duana
- 关键词：Chlorophyll meter ; Nitrogen nutrition index ; Plant N status ; Leaf N gradient ; Winter barley
- 刊名：Field Crops Research
- 出版年：2016
- 出版时间：January 2016
- 年：2016
- 卷：185
- 期：Complete
- 页码：59-68
- 全文大小：664 K
文摘
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The fourth leaf from top of the canopy could better reflect plant nitrogen (N) status in winter barley.
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The chlorophyll meter (CM) readings gradient is a good proxy of leaf N gradient.
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The N nutrition index (NNI) and CM reading relations were not stable across cultivars and seasons.
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The positional difference chlorophyll measurements index (PDCMI) of different leaves had significant negative relationships with N nutrition index expect for PDCMI12 and PDCMI13.
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The NNI and PDCMI14 relations were stable across the cultivars and seasons.