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湖北省小麦施磷效果及磷肥利用率研究

Study on Phosphorus Effect and Phosphorus Use Efficiency of Wheat in Hubei Province

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【作者】 余宗波邹娟肖兴军童军鲁明星李小坤鲁剑巍

【Author】 YU Zong-bo1,ZOU Juan2,XIAO Xing-jun3,TONG Jun1,LU Ming-xing1,LI Xiao-kun2,LU Jian-wei2(1.Soil and Fertilizer Station of Hubei Province,Wuhan 430070,China;2.College of Resources and Environment,Huazhong Agricultural University,Wuhan 430070,China;3.Soil and Fertilizer Station of Xiangyang City,Hubei Province,Xiangyang 441021,Hubei,China)

【机构】 湖北省土壤肥料工作站华中农业大学资源与环境学院湖北省襄阳市土壤肥料工作站

【摘要】 在湖北省小麦主产县(市、区)进行不同磷肥用量的70组田间肥效试验,以阐明湖北省小麦施磷效益及磷肥利用率现状。结果表明,小麦施磷增产效果显著,与不施磷对照处理相比,施磷后小麦平均增产1 449 kg/hm2,增产率为27.0%;施磷平均经济效益增加1 798元/hm2,产投比5.8;磷肥偏生产力和农学效率分别为78.8kg/kg和16.1kg/kg。根据直线加平台模型,得出湖北省小麦磷肥最佳用量平均为75kg/hm2。

【Abstract】 Field experiments on wheat were conducted at 70 sites in Hubei province during 2006~2008 to study the phosphorus(P) effect and P use efficiency of wheat in main wheat-planting regions of Hubei province.The results indicated that applying P fertilizers could increase the yield and profit of wheat significantly.The average yield of P application treatment was 1 449 kg/hm2 higher than that of the control treatment(without P),and the increment rate was 27.0%.Compared with control treatment,profit of P application increased by 1 798 Yuan/hm2 and the value cost ratio(VCR) averaged 5.8.The partial factor productivity of applied P(PFPP) and agronomic P use efficiency(AEP) averaged 78.8 kg/kg P2O5 and 16.1 kg/kg P2O5,respectively.According to linear plus platform model,the average optimum P application rate was 75 kg P2O5/hm2 for wheat in Hubei Province.

【关键词】 小麦磷肥产量经济效益磷肥利用率
【Key words】 wheatphosphorusyieldprofitphosphorus use efficiency
【基金】 国家“十一五”科技支撑重点项目(2008BADA4B08);国家测土配方施肥项目
  • 【文献出处】 湖北农业科学 ,Hubei Agricultural Sciences , 编辑部邮箱 ,2011年07期
  • 【分类号】S512.1
  • 【被引频次】16
  • 【下载频次】270
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