Zhang Suiqi,Shan Lun.Study on Optimum Application of Winter Wheat under Water Saving Irrigation Condition[J].Research of Soil and Water Conservation,1999,6(01):79-82.
节水灌溉条件下冬小麦优化施肥研究
- Title:
- Study on Optimum Application of Winter Wheat under Water Saving Irrigation Condition
- Keywords:
- water saving irrigation; winter wheat; optimum application
- 摘要:
- 在东新大田生产条件下,就冬小麦只进行冬灌时的优化施肥问题进行了研究.结果发现由于东新土壤普遍缺N而富P,施用P肥无明显增产效果,低N下施P反而减产;而施N则具有明显节水增产效果.因此,在东新只灌一水(冬灌60mm)情况下,从发挥肥效和提高WUE的角度出发,施纯N150kg/hm2,N:P=2:1即可达到较优效果,过量NP肥施用无助于产量和WUE的提高.
- Abstract:
- The optimum application of winter wheat were studied under water saving irrigation in Dongxin village.The result showed that the effect of P application was not obvious,yield and WUE of winter wheat were reduced by P application under low N condition.But yield and WUE of winter wheat were increased significantly by N application because of deficient N and plentful P in soil.There for the effect of application of N 150 kg/hm2 and N:P=2:1 was optimum under water saving irrigation in Dongxin village.
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备注/Memo
收稿日期:1999-1-10。