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太湖地区稻麦轮作系统中氮肥效应的研究

Studies on the nitrogen fertilizer application of rice-wheat rotation system in Taihu Lake Region

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【作者】 晏娟尹斌张绍林沈其荣朱兆良

【Author】 YAN Juan1,2,YIN Bin2,ZHANG Shao-lin2,SHEN Qi-rong1*,ZHU Zhao-liang2(1.College of Resources and Environmental Sciences,Nanjing Agricultural University,Nanjing 210095,China;2.State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China)

【机构】 南京农业大学资源与环境科学学院中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室

【摘要】 以太湖地区的常熟市为试验区,选择不同土壤类型的农田,设置不同氮肥水平田间小区试验与微区试验,对稻麦轮作下作物产量的氮肥效应及田间适宜施氮量进行了研究。结果表明,无论是水稻,还是小麦,随施氮量增加,作物氮肥农学利用效率均下降。2年多点田间试验结果显示,该地区水稻的区域平均适宜施氮量为(176±24.2)kg.hm-2,小麦为(228±27.1)kg.hm-2。研究结果还表明,在该地区大义黄泥土上,水稻(品种4007)兼顾生产、生态和经济效益比较合理的施氮量为171~204 kg.hm-2。

【Abstract】 To investigate the effect of N application rate on crop yield and the optimal nitrogen fertilizer application rates to rice-wheat rotation system in Taihu Lake Region,several field experiments and micro-plot experiments were conducted with different N application rates under different soil species and crop cultivars in Changshu City.The results obtained were as follows.No matter rice or wheat,agronomic efficiency of applied N decreased rapidly with the increased N rates.The results from five field experiments in two years evidenced that the regional optimal nitrogen fertilizer application rate of rice was at(176±24.2)kg·hm-2,and of wheat at(228±27.1)kg·hm-2.The ecological and economical satisfactory application rate of nitrogen fertilizer on rice(cultivar 4007)ranged within 171-204 kg·hm-2 on Dayi Huangni soil in Taihu Lake Region.

【关键词】 氮肥适宜施氮量水稻小麦
【Key words】 nitrogen fertilizeroptimal nitrogen application ratericewheat
【基金】 江苏省重大科技攻关项目(BE2005369)
  • 【文献出处】 南京农业大学学报 ,Journal of Nanjing Agricultural University , 编辑部邮箱 ,2009年01期
  • 【分类号】S511;S512.1
  • 【被引频次】45
  • 【下载频次】423
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