XUE Xiao-hui,HU Ya,WANG Si-hui.Effect of Fertilization on Wheat Yield and Fertilizer Use Efficiency in Northwest Guizhou[J].HEILONGJIANG AGRICULTURAL SCIENCES,2015,(11):39-43.[doi:10.11942/j.issn1002-2767.2015.11.0039]
黔西北山区施肥对小麦产量及肥料利用率的影响
- Title:
- Effect of Fertilization on Wheat Yield and Fertilizer Use Efficiency in Northwest Guizhou
- 文章编号:
- 1002-2767（2015）11-0039-05
- Keywords:
- northwest Guizhou; fertilization; nitrogen fertilizer use efficiency; phosphorus fertilizer use efficiency; wheat yield
- 分类号:
- S512.062
- 文献标志码:
- A
- 摘要:
- 在黔西北山区通过3 a的“3414”肥料试验，研究了施肥对小麦产量及肥料利用率的影响。结果表明：①氮磷钾配合施用后小麦产量最高，可达6 193 kg·hm-2，缺素时小麦产量降低，以不施肥处理的小麦产量最低，降低35.69%。增施氮、磷、钾肥小麦产量增加，最高增加37.35%；②氮磷钾肥配合施用时氮肥利用率可达50.78%，磷肥利用率可达29.77%，缺素时氮、磷肥利用率降低；③增施氮、磷、钾肥可以提高氮、磷肥利用率，但是施用量过高时氮、磷肥利用率有所下降。
- Abstract:
- Through three years of the “3414” fertilizer experiment,the effect of fertilization on wheat yield and fertilizer use efficiency was studied in the northwest of Guizhou.The results showed that:①Wheat yield was maximal after application of N,P and K fertilizers which was 6 193 kg·hm-2.When nutrition lacked wheat yield decreased，the lowest yield of wheat yield was appeared in unfertilized treatment,and reduced 35.69% compared with the NPK treatment.Wheat yield improved with the increasing rate of N,P and K fertilizer,the maximum increased 37.35%.②N use efficiency and P use efficiency were 50.78% and 29.77% after application of N,P and K fertilizers,respectively.N use efficiency and P use efficiency decreased if a fertilizer didn’t applied alone.③N use efficiency and P use efficiency was improved with the increasing applied rate of N,P and K fertilizer,but it decreased when the rate of N,P and K fertilizer was excessive.
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备注/Memo
基金项目：贵州省科学技术基金资助项目（黔科合J字[2011]2319号）；贵州省教育厅自然科学研究项目青年资助项目（黔教合KY字[2014]325）；毕节学院高层次人才科学研究资助项目（院科合字G2012010）第一作者简介：薛晓辉（1980-），男，陕西省蒲城县人，博士，副教授，从事土壤化学与养分循环研究。E-mail:xuexh8028@sina.com。