Title: Effect of Different Compensation Irrigation on Yield and Water-use-efficiency of Winter Wheat in Henan Province
Abstract: The effect of compensation irrigation on the yield and water use efficiency of winter wheat in Henan province was studied.The results showed that the soil was obviously short of moisture when the irrigation was managed in the former stage,and the layer of 20-40cm was the lowest one in all of the layers.The group dynamics,the volume of spikes per hectare and the tiller volume of single plant were improved under national compensative irrigation.The spike volume per ha,the tillers and spikes per plant were increased by 16500-699000,0.12-1.16 and 0.01-0.11,respectively.For the effect of irrigation on plant height,spike length and spike grains,the combinative treatment of irrigation in the former stage and medium irrigation compensation in the latter were better.The wheat yield was increased by 2.54%-13.61% compared to control and the treatments,irrigation of 900m3/ha at the elongation stage and of 450m3/ha at the booting stage or separate irrigation of 900m3/ha at the two stage were the highest.As to the growth period,irrigation at the elongation stage of 900 m3/ha combined with the booting stage was the best,with the yield increased by 11.09%,followed by irrigation at the elongation stage with the yield increased by 7.11%.All of these results demonstrated that the suitable irrigation volume was 900 m3 /ha at the elongation stage and half or equal volume at the latter stage in high flow or normal flow year in high and medium yield production region.The water use efficiency was not increased with the yield,and the better treatments were irrigation of 450m3/ha and 900m3/ha at the elongation stage,which further stated that the best irrigation stage was elongation stage in the experimental area.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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