Effects of the Different Irrigation-Fertilization Optimization Models on Grain Yield, Yield Structure and Water and Nitrogen Use Efficiency of Winter Wheat

doi:10.3321/j.issn:1000-7091.2005.02.018

Abstract

Abstract: The experimental results showed insignificant difference in the ear number per unit area and grain yield of winter wheat between the traditional irrigation-optimized fertilization, optimized irrigation-traditional fertilization, optimized irrigation-optimized fertilization, optimized irrigation-optimized fertilization with crop residues, and traditional irrigation-traditional fertilization|the greatly reduced grain number per ear and significantly heavier weight of 1 000 grains of the optimized irrigation-optimized fertilization and optimized irrigation-optimized fertilization with crop residues|the significantly higher nitrogen use efficiency of the traditional irrigation-optimized fertilization, optimized irrigation-optimized fertilization and optimized irrigation-optimized fertilization with crop residues|and indistinct difference in water use efficiency between the five treatments.

Key words: Winter wheat, Irrigation, Fertilization, Optimization

CLC Number:

S512.1

LI Zhi-yong, CHEN Jian-jun, WANG Pu. Effects of the Different Irrigation-Fertilization Optimization Models on Grain Yield, Yield Structure and Water and Nitrogen Use Efficiency of Winter Wheat[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2005, 20(2): 66-71. doi: 10.3321/j.issn:1000-7091.2005.02.018.

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