| 氮素用量对节水条件下小麦生育特性和产量的调控效应 |
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| 引用本文： | 柯忻,赵金峰,郭程瑾,苗鸿鹰,许振龙,肖凯. 氮素用量对节水条件下小麦生育特性和产量的调控效应[J]. 河北农业大学学报, 2009, 32(6) |
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| 作者姓名： | 柯忻 赵金峰 郭程瑾 苗鸿鹰 许振龙 肖凯 |
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| 作者单位： | 河北农业大学,农学院,河北,保定,071001;河北农业大学,农学院,河北,保定,071001;河北农业大学,农学院,河北,保定,071001;河北农业大学,农学院,河北,保定,071001;河北农业大学,农学院,河北,保定,071001;河北农业大学,农学院,河北,保定,071001 |
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| 基金项目： | 河北省自然科学基金项目，国家粮食丰产科技工程项目 |
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| 摘 要： | 以‘石麦12’和‘石麦15’为材料,研究了节水(春季仅灌拔节水)条件下小麦生育特性和产量的氮素调控效应。结果表明:增施氮素能增加各生育时期的群体总茎数、LAI和群体干物重,提高叶片的叶绿素含量、旗叶叶绿素荧光参数值和光合参数值。增施氮素使成熟期单位面积穗数增加,但千粒重和籽粒产量与施氮量的关系呈单峰曲线型,以中氮(225 kg N/hm2)最佳。因此,在节水栽培的小麦生产实践中,应依据土壤肥力状况,采用适宜的氮素施用数量,以实现产量和水肥利用效率的同步增加。
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| 关 键 词： | 小麦 节水栽培 氮素用量 生育特性 产量 |
Regulation effects of nitrogen amounts on yield and growth of wheat under water-saving irrigation |
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| KE Xin,ZHAO Jin-feng,GUO Cheng-jin,MIAO Hong-ying,XU Zhen-long,XIAO Kai. Regulation effects of nitrogen amounts on yield and growth of wheat under water-saving irrigation[J]. Journal of Agricultural University of Hebei, 2009, 32(6) |
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| Authors: | KE Xin ZHAO Jin-feng GUO Cheng-jin MIAO Hong-ying XU Zhen-long XIAO Kai |
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| Affiliation: | KE Xin,ZHAO Jin-feng,GUO Cheng-jin,MIAO Hong-ying,XU Zhen-long,XIAO Kai(College of Agronomy,Agricultural University of Hebei,Baoding 071001,China) |
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| Abstract: | Using cultivar Shimai12 and Shimai15 as the experimental materials,the regulation effects of nitrogen application amounts on yield and growth of wheat under water-saving irrigation were evaluated.The results indicated that the population culm number,LAI,and population dry weight under various growth stages increased with the increase of nitrogen amounts,so did the leaf chlorophyll contents,flag leaf fluorescent parameters,and flag leaf photosynthetic parameters.The spike numbers at maturity stage also incre... |
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| Keywords: | wheat (Triticum aestivum L.) water-saving irrigation nitrogen application amount growth and development yield |
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