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在水资源不足地区,如何在时间(作物不同生育期)及空间(不同作物、不同地区)上合理配置有限的资源,以获最大收益,是实行非充分灌溉技术的关键。其中,经济灌溉定额,最优灌溉制度是整个研究的中心。1 经济灌溉定额经济灌溉定额常用于田间灌水总量的节水评估。一般以作物全生育期水分生产函数为依据,用求极值方法或投入产出分析方法求解。一般的目标优化准则为:单位面积净效益最大。单
In areas with insufficient water resources, the key to implementing inadequate irrigation technologies is how to allocate the limited resources reasonably and optimally in time (different crop growth stages) and in space (different crops and different regions) for maximum benefits. Among them, the economic irrigation quota, the optimal irrigation system is the center of the whole study. 1 Economic Irrigation Quota Economic irrigation quotas are commonly used for water conservation assessment of total field irrigation. The general crop growth period water production function as the basis, with the extreme value method or input-output analysis method. The general goal of optimization guidelines: the largest net benefit per unit area. single