| 基于预设SPAD阈值的花生氮肥施用效果研究 |
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| 引用本文： | 邱才飞,邵彩虹,彭春瑞,钱银飞,陈金,关贤交,谢江. 基于预设SPAD阈值的花生氮肥施用效果研究[J]. 干旱地区农业研究, 2018, 36(6): 153-158 |
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| 作者姓名： | 邱才飞 邵彩虹 彭春瑞 钱银飞 陈金 关贤交 谢江 |
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| 作者单位： | （Institute of Soil, Fertilizer, Resources, and Environment, Jiangxi Academy of Agricultural Sciences/National Engineering and Technology Center for Red Soil Improvement/Key Laboratory of Crop Ecophysiology and Farming System for the Middle and Lower Reaches of the Yangtze River, Ministry of Agriculture. P.R.China, Nanchang，330200，China,（Institute of Soil, Fertilizer, Resources, and Environment, Jiangxi Academy of Agricultural Sciences/National Engineering and Technology Center for Red Soil Improvement/Key Laboratory of Crop Ecophysiology and Farming System for the Middle and Lower Reaches of the Yangtze River, Ministry of Agriculture. P.R.China, Nanchang，330200，China,（Institute of Soil, Fertilizer, Resources, and Environment, Jiangxi Academy of Agricultural Sciences/National Engineering and Technology Center for Red Soil Improvement/Key Laboratory of Crop Ecophysiology and Farming System for the Middle and Lower Reaches of the Yangtze River, Ministry of Agriculture. P.R.China, Nanchang，330200，China,（Institute of Soil, Fertilizer, Resources, and Environment, Jiangxi Academy of Agricultural Sciences/National Engineering and Technology Center for Red Soil Improvement/Key Laboratory of Crop Ecophysiology and Farming System for the Middle and Lower Reaches of the Yangtze River, Ministry of Agriculture. P.R.China, Nanchang，330200，China,（Institute of Soil, Fertilizer, Resources, and Environment, Jiangxi Academy of Agricultural Sciences/National Engineering and Technology Center for Red Soil Improvement/Key Laboratory of Crop Ecophysiology and Farming System for the Middle and Lower Reaches of the Yangtze River, Ministry of Agriculture. P.R.China, Nanchang，330200，China,（Institute of Soil, Fertilizer, Resources, and Environment, Jiangxi Academy of Agricultural Sciences/National Engineering and Technology Center for Red Soil Improvement/Key Laboratory of Crop Ecophysiology and Farming System for the Middle and Lower Reaches of the Yangtze River, Ministry of Agriculture. P.R.China, Nanchang，330200，China and （Institute of Soil, Fertilizer, Resources, and Environment, Jiangxi Academy of Agricultural Sciences/National Engineering and Technology Center for Red Soil Improvement/Key Laboratory of Crop Ecophysiology and Farming System for the Middle and Lower Reaches of the Yangtze River, Ministry of Agriculture. P.R.China, Nanchang，330200，China |
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| 基金项目： | 江西省重点研发计划（20161BBF60126）;江西现代农业科研协同创新专项(JXXTCX2015003-001) |
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| 摘 要： | ![]()
为利用花生叶片SPAD值进行实时、无损诊断花生生长过程中的氮素丰缺,指导花生合理施用氮肥,试验通过设定花生出苗后30、45、60、75 d和90 d倒3叶的SPAD值,分别将SPAD值按各时间段在30～33、38～41、42～45、44～47和43～46每隔1个点值预设一种施氮方案,共3种方案(分别以SN-1、SN-2和SN-3表示),探究不同氮素管理方案对花生的自身固氮力、氮素利用效率和产量的影响效果。研究结果显示,3种方案中,SN-3阈值设定过高,不利于花生的生长,SN-1和SN-2的阈值设定方案较合理,均可促进花生根瘤生长,提高氮素利用效率和产量。其中,SN-1的阈值设定最佳,与常规施肥比较,SN-1的花生单株根瘤量和单个根瘤重分别增加17.65%和4.35%,氮素利用效率和氮素农学利用效率分别提高19.36和3.99个百分点,花生产量增加12.95%。因此,SN-1方案的SPAD预设值可以作为花生栽培过程中各生育时段的氮素丰缺阈值。
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| 关 键 词： | SPAD阈值；花生；氮肥；根瘤；氮素利用效率；产量 |
Effect of nitrogen fertilization on peanut growth based on the preset SPAD threshold |
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| QIU Cai-fei,SHAO Cai-hong,PENG Chun-rui,QIAN Yin-fei,CHEN Jin,GUAN Xian-jiao,XIE Jiang. Effect of nitrogen fertilization on peanut growth based on the preset SPAD threshold[J]. Agricultural Research in the Arid Areas, 2018, 36(6): 153-158 |
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| Authors: | QIU Cai-fei SHAO Cai-hong PENG Chun-rui QIAN Yin-fei CHEN Jin GUAN Xian-jiao XIE Jiang |
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| Abstract: | ![]()
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| Keywords: | SPAD threshold peanuts nitrogen fertilizer N-fixation nodules N use efficiency peanut yield |
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