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Wheat Grain Yield and Yield Stability in a Long-Term Fertilization Experiment on the Loess Plateau

机译:黄土高原地区长期定位施肥的小麦籽粒产量和产量稳定性

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摘要

To provide a scientific basis for sustainable land management,a 20-year fertility experiment Was conducted in Changwu County,Shaanxi Province,China to investigate the effects of long-term application of chemical fertilizers on wheat grain yield and yield stability on the Loess Plateau using regression and stability analysis.The experiment consisted of 17fertilizer treatments.containing the combinations of different N and P levels,with three replications arranged in a randomized complete block design.Nitrogen fertilizer was applied as urea,and P was applied as calcium superphosphate.Fertilizer rates had a large effect on the response of wheat yield to fertilization.Phosphorus,combined with N,increased yield significantly(P≤0.01).In the unfertilized control and the N or P sole application treatments,wheat yield had a declining trend although it was not statistically significant.Stability analysis combined with the trend analysis indicated that integrated use of fertilizer N and P was better than their sole application in increasing and sustaining the productivity of rainfed winter wheat.
机译:为了给土地可持续管理提供科学依据,在陕西省昌武县进行了为期20年的肥力试验,研究了长期施用化肥对黄土高原地区小麦籽粒产量和产量稳定性的影响。回归和稳定性分析。该实验由17种肥料处理组成,包含不同N和P水平的组合,以随机完整块设计的方式安排了三份重复试验,氮肥用作尿素,P用作过磷酸钙。磷与氮结合显着提高了小麦产量对施肥的响应(P≤0.01)。在未施肥的对照和氮或磷的单独施用处理中,小麦的产量虽然呈下降趋势,但呈下降趋势。稳定性分析与趋势分析相结合,表明氮,磷肥的综合利用是一个不错的选择除了在增加和维持雨养冬小麦生产力方面的唯一应用。

著录项

  • 来源
    《土壤圈(英文版)》 |2007年第2期|257-264|共8页
  • 作者单位

    Institute of Soil and Water Conservation, Chinese Academy of Sciences, Yangling 712100 (China);

    Northwest A & F University, Yangling 712100 (China);

    State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Yangling 712100 (China);

    Northwest A & F University, Yangling 712100 (China);

    State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Yangling 712100 (China);

    Institute of Soil and Water Conservation, Chinese Academy of Sciences, Yangling 712100 (China);

    Northwest A & F University, Yangling 712100 (China);

    Institute of Soil and Water Conservation, Chinese Academy of Sciences, Yangling 712100 (China);

    Northwest A & F University, Yangling 712100 (China);

    Institute of Soil and Water Conservation, Chinese Academy of Sciences, Yangling 712100 (China);

  • 收录信息 中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 农业基础科学;
  • 关键词

    dryland wheat yield; long-term fertilization; nitrogen; phosphorus; yield stability;

    机译:旱地小麦产量长期施肥氮磷产量稳定性;
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