ptimal Irrigation Model of Winter Wheat and Its Application

doi:10.3321/j.issn:1000-7091.1995.04.005

Abstract

Abstract: In soil-plant-atmosphere system, soil available water content, crop water consumption, and effective precipitation are the main factors in water balance equation of farmland.The sub-model of predicting soil water content analyses comprehensively their dynamic changes and tells in advance the actual evapotranspiration of farmland and soil available water content in the future.The sub-model of making strategic decision of optimal irrigation makes the decision of conducting irrigation or not, and the irrigation schedule and quota required, if irrigation is necessary, based on crop water indices,cocficients response to yield in different stages of crop growth, and the objective function aiming at obtaining the maximum economic benefit.

Key words: Optimal irritagion, Model, Strategic decision, Target function

CLC Number:

S512.107

Zhu Zixi, Zhao Guoqiang, Deng Tianhong. ptimal Irrigation Model of Winter Wheat and Its Application[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1995, 10(4): 26-33. doi: 10.3321/j.issn:1000-7091.1995.04.005.

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