But in practical operating, the quantity and the timing of fertilization and irrigation can not be controlled exactly and optimally.
但是在实际操作中灌溉量、施肥量与灌溉和施肥的时机都不容易实现最优化控制。
IlThe subsystem of autumn irrigation decision-making management included two aspects of forecasting irrigation quota and irrigation timing.
秋浇决策预报子系统包括秋浇灌水定额和灌水时间预报两个方面。
IlThe subsystem of autumn irrigation decision-making management included two aspects of forecasting irrigation quota and irrigation timing.
秋浇决策预报子系统包括秋浇灌水定额和灌水时间预报两个方面。
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