Characteristics of Water Consumption and Ways of Raising Water Use Efficiency for Dryland Corn

doi:10.3321/j.issn:1000-7091.2000.01.016

Abstract

Abstract: The study results indicated that water consumption of farmland was mainly in the soil layer no deeper than 1m; the water use efficiency of corn in 0~50 cm soil layer approached to 60%; the evaporation of soil water among corn plants with different treatments made up 47.6~77.5% of the farmland evapotranspiration; the evaporation among corn plants in the whole growing period was negatively related to leaf area index and corn yield was positively related to the transpiration of plants; stalk mulch can efficiently reduce the evaporation of soil water among corn plants; proper fertilization can promote corn's utilization of soil water.

Key words: Dryland, Corn, Evaporation among plants, Stalk mulch

CLC Number:

S513.01

JIN Fansheng, LI Suling, XIAO Fuxing, LIU Fengming. Characteristics of Water Consumption and Ways of Raising Water Use Efficiency for Dryland Corn[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2000, 15(1): 76-80. doi: 10.3321/j.issn:1000-7091.2000.01.016.

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