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注意选择灌水率和灌溉时间安排，尤其在湿润地区能减少灌溉用水，而又保持产量。根据灌溉起始时间和灌水率的变化和有助于制定灌溉决策资料的多少，利用计算机模拟对灌溉计划进行比较。根据较好信息制定的灌溉计划使每公顷的平均增水量从７４ｃｍ下降到３５ｃｍ，比标准灌溉计划的灌水量减少５０％以上。较好的灌溉计划也使每公顷的平均净收益从５１．１美元增至７９．７美元，同标准灌溉计划相比，净收益增长了５０％以上。
Be careful to choose irrigation rates and irrigation schedules, especially in humid areas to reduce irrigation water while maintaining production. Irrigation schemes are compared using computer simulations based on changes in irrigation initiation time and irrigation rates and how much irrigation decision information is available. An irrigation plan based on better information reduced the average increase in water per hectare from 74 cm to 35 cm, a reduction of more than 50% from the standard irrigation schedule. Better irrigation programs also increased average net income per hectare from US $ 51.1 to US $ 79.7, representing a net increase of more than 50% over standard irrigation schemes.