The model was used to determine optimum irrigation amount for obtaining maximum net return.
以净效益最大为原则，用所提出的模型研究了不同灌水均匀系数时的最优灌水量。
The case study of irrigation management during the winter wheat growing season at Zhengzhou eco-site in 1991, 1992 was conducted to analysis the optimum irrigation scheduling.
以郑州冬小麦生长季水分管理为对象，对当地1991,1992年冬小麦生长季优化灌溉制度决策进行了实例分析。
The"311-A"regression design was adopted to study the optimum ratio of N, P and K fertilizers on maize field of Yellow River Pumping Irrigation District in Cheng Xitan, Yanchi Ningxia.
运用“311-A”试验设计，探讨宁夏盐池县城西滩扬黄灌区玉米氮、磷、钾肥料的最佳配比。
In 1982, the 6160-9 diesel engine has awarded national silver medal of quality. 6160 diesel engine has been optimum power for generating, shipping and irrigation.
1982年，6160 ？9增压型柴油机获国家质量银质奖。6160型柴油机成为发电、船舶、排灌的最佳动力。
In arid land, proper calculation of irrigation evaporation plays an important role in water resources optimum distribution.
在干旱区，定量计算灌溉蒸发量，对合理配置水资源有十分重要的意义。
The optimum canal discharge and irrigation rotation schedule were also studied in the models.
模型还可研究灌溉系统内各子系统的优化供水流量和优化轮灌方案。
The optimum water potential value of irrigation for the rape was discussed.
对油菜的适宜灌水势值指标进行了初步探讨。
The optimum soil moisture content index about tomato seedling bed irrigation was conducted out in early spring.
对番茄早春育苗的苗床灌溉最佳土壤含水量上限数值进行了试验研究。
The optimum policy of conjunctive operation of canal and well can be widely used in irrigation engineering management of the Hetao irrigation district.
渠井联合运用的优化决策，可广泛应用于河套引黄灌区灌排工程配套及管理之中。
The optimum policy of conjunctive operation of canal and well can be widely used in irrigation engineering management of the Hetao irrigation district.
渠井联合运用的优化决策，可广泛应用于河套引黄灌区灌排工程配套及管理之中。
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