| 关中平原冬小麦临界氮稀释曲线建模 |
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| 引用本文： | 强生才,张富仓,张燕,闫世程,向友珍,李志军.关中平原冬小麦临界氮稀释曲线建模[J].干旱地区农业研究,2019,37(4):83-90. |
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| 作者姓名： | 强生才 张富仓 张燕 闫世程 向友珍 李志军 |
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| 作者单位： | 山西农业大学城乡建设学院,山西 太谷030801;西北农林科技大学旱区农业水土工程教育部重点实验室,陕西 杨凌712100;西北农林科技大学旱区农业水土工程教育部重点实验室,陕西 杨凌712100;西北农林科技大学中国旱区节水农业研究院,陕西 杨凌712100;西北农林科技大学旱区农业水土工程教育部重点实验室,陕西 杨凌,712100 |
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| 基金项目： | 国家“十二五”863计划项目（2011AA100504）；教育部高等学校创新引智计划（B12007）；山西农业大学科技创新基金(2016YJ07) ；山西农业大学青年科技创新基金（2016007） |
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| 摘 要： | 临界氮稀释曲线可诊断植株氮营养状况，针对国内目前普遍存在的建模品种单一，可能造成模型普适性偏差的问题，以陕西关中平原主栽的6个冬小麦品种为研究对象，分别设置4个（0、105、210 kg·hm-2和315 kg·hm-2）施氮量水平，以两季4个冬小麦品种田间数据，建立了冬小麦花期前地上部干物质临界氮稀释曲线，曲线服从负幂指数函数；进一步通过另外2个冬小麦品种共计两季数据对模型进行了验证，验证结果表明，采用临界氮稀释曲线可以较好地区分独立样本中的氮营养亏缺和氮营养过剩数据。依据临界氮稀释曲线建立的氮营养指数和累计氮亏缺模型，可分别用于诊断植株的氮营养状况和量化氮素盈亏量，诊断结果表明施氮量为0 kg·hm-2和105 kg·hm-2条件下植株氮营养亏缺，210 kg·hm-2和315 kg·hm-2条件下小麦氮营养盈余，0~315 kg·hm-2施氮量下的累计氮亏缺量-33.2~50.9 kg·hm-2。通过建立氮营养指数与施氮量之间的线性关系，得出关中平原冬小麦适宜施氮量约为162 kg·hm-2。
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| 关 键 词： | 关中平原 冬小麦 临界氮浓度 氮营养指数 累计氮亏缺 |
Determination of critical nitrogen dilution curve for winter wheat in Guanzhong Plain |
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| QIANG Sheng-cai,ZHANG Fu-cang,ZHANG Yan,YAN Shi-cheng,XIANG You-zhen,LI Zhi-jun.Determination of critical nitrogen dilution curve for winter wheat in Guanzhong Plain[J].Agricultural Research in the Arid Areas,2019,37(4):83-90. |
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| Authors: | QIANG Sheng-cai ZHANG Fu-cang ZHANG Yan YAN Shi-cheng XIANG You-zhen LI Zhi-jun |
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| Institution: | College of Urban and Rural Construction, Shanxi Agricultural University, Taigu, Shanxi 030801, China; Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education Northwest A&F University, Yangling, Shaanxi 712100, China,Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education Northwest A&F University, Yangling, Shaanxi 712100, China; Institute of Water-saving Agriculture in Arid Areas of China, Northwest A&F University, Yangling, Shaanxi 712100, China,College of Urban and Rural Construction, Shanxi Agricultural University, Taigu, Shanxi 030801, China; Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education Northwest A&F University, Yangling, Shaanxi 712100, China,Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education Northwest A&F University, Yangling, Shaanxi 712100, China,Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education Northwest A&F University, Yangling, Shaanxi 712100, China and Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education Northwest A&F University, Yangling, Shaanxi 712100, China |
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| Abstract: | |
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| Keywords: | Guanzhong plain winter wheat critical nitrogen concentration nitrogen nutrition index accumulated nitrogen deficit |
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