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《Journal of Hebei Agricultural Sciences》 2003-02
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The Effects of Irrigation Rate and Time on Water Consumption and Output of Wheat

Liu Yanjun (Shijiazhuang Academy of Agriculture Sciences , Shijiazhuang 050041)  
Using new wheat variety-shi 4185, which has high yield potential and high resistance to drought, we studied the influence of irrigation rate and time on water consumption, output, yield component of wheat. The results showed that: (1)with the increase of times and rate of irrigation, total water consumption, water consumption intensity also increased, soil water reduced. Variation of water consumption intensity is related to water supply of that stage, The more water supplied, the larger of water consumption intensity. (2)There are two key stages in water's demand in wheat life. That is the stage from jointing to booting and the stage of peak filling. Water at jointing Stage can increase spike numbers, water at booting and peak filling stages can promote kernel weight. (3)For efficient irrigation, We should control at the beginning and accelerating at the end and ensure the key stage water. Irrigation in the stage of booting, anthesis and peak filling is efficient in wheat.
【Fund】: 国家863高科技计划项目(2002AA2Z4011)资助
【CateGory Index】: S512.107
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