Effects of Different Fertilization Schemes on Vegetable Yield and Nitrogen Loss from Vegetable Field
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    Abstract:

    Field plot trials with amaranth,brassica chinensis,and eggplant involving 6different fertilization schemes including non-fertilizer,chemical fertilizer,optimal fertilizer(combined chemical fertilizer and organic manure),organic manure,increased N fertilizer,increased P fertilizer,were conducted under natural rain-fed condition to investigate the effects of the fertilization schemes on yield,as well as N accumulation, nitrogen fertilizer utilization rate,and loss of N by surface runoff.The results show that compared with nonfertilizer, the other 5fertilization models can increased yield of 93.55%,103.74%,96.68%,130.78%and 136.04%,respectively.With different fertilization,the loss of total N by surface runoff varied between 68.11~92.10kg/hm2.Compared with the chemical fertilization,organic fertilization and optimum fertilization could decreased total N loss by 4.67%and 2.02%respectively.Compared with the optimal fertilizer, increasing N and P fertilizer could increase the amount of total N loss respectively by 10.53%and 8.28%. Therefore,the fertilizer ratio should be improved to effectively reduce nitrogen loss on vegetable lands.With steady inputs of N and P,organic fertilizer should be increased while chemical fertilizer should be reduced.

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张颖飞,蒋治国,堵燕钰,赵言文.不同施肥模式对蔬菜产量及菜地氮流失的影响[J].水土保持通报英文版,2011,(5):54-58

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History
  • Received:April 26,2010
  • Revised:January 26,2011
  • Adopted:
  • Online: November 26,2014
  • Published: