[1]HUO Yizhen,WANG Wenda,HAN Cuilian,et al.Effects of Irrigation Quota on Maize Yield Traits and Water Use Efficiency Under Mulched Drip Irrigation in Hetao Irrigation Distract[J].Research of Soil and Water Conservation,2020,27(05):182-187.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 05
Page number:
182-187
Column:
目次
Public date:
2020-08-20
- Title:
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Effects of Irrigation Quota on Maize Yield Traits and Water Use Efficiency Under Mulched Drip Irrigation in Hetao Irrigation Distract
- Author(s):
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HUO Yizhen, WANG Wenda, HAN Cuilian, LI Shengyong, GUO Yanfen
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(1.Hetao University, Bayannur, lnner Mongolia 015000, China; 2.Irrigation and Drainage Engineering Technology Research Center, Hetao Irrigation District, Bayannur, lnner Mongolia 015000, China)
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- Keywords:
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mulched drip irrigation; plant height; leaf area index; aboveground biomass accumulation; SPAD; yield; water use efficiency
- CLC:
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S274.1
- DOI:
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- Abstract:
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In order to evaluate the suitability of mulched drip irrigation for maize planting in Hetao Irrigation Distract, and screen suitable irrigation quota, five treatments of different drip irrigation quotas including DP1(180 mm), DP2(200 mm), DP3(220 mm), DP4(240 mm)and DP5(260 mm)were set up, and traditional flooding irrigation(358 mm)was set as the control. The effects of different treatments on plant height, leaf area index, aboveground biomass accumulation, leaf SPAD value, yield, and water use efficiency during the whole growth period of maize were systematically measured. The results show that: the yield and water use efficiency of maize treated by drip irrigation were significantly higher than traditional flooding irrigation; with the increase of drip irrigation quota, the plant height, leaf area index, aboveground biomass accumulation and SPAD all show the significant increase, and the overall performance decreases in the order: DP5>DP4>DP3>DP2>DP1; however, the difference between DP4 and DP5 is not significant, indicating that when the irrigation amount reaches a certain value, the effect of continuous increase of irrigation water on maize growth index greatly weakens; mulched drip irrigation significantly increases maize yield and water use efficiency, and DP4 increases these indeices most significantly, the yields are 56.06%, 40.37%, 33.67%, 6.50% and 5.48% higher than those of CK, DP1, DP2, DP3 and DP5, respectively; the water use efficiency increases by 149.05%, 26.56%, 25.22%, 5.82% and 12.44%, respectively. Comprehensive analysis indicates that 240 mm irrigation quota of maize mulched drip irrigation in this area is more suitable.