【摘要】 通过计算机控制系统,利用各种传感器,自动采集、监测农田土壤水分、土壤温度、大气温度、大气相对湿度、田间水分蒸发量、土壤全盐含量等农田环境参数,根据这些参数结合数学模型可预报出棉田需灌时间和需灌水量,利用计算机系统所显示的棉田土壤温度、湿度变化情况,为自动化灌溉系统提供控制信息,传递控制信号,并结合棉花各个生长期的需水规律实施自动滴灌,为棉花生长提供科学合理的灌溉方案,同时在利用精准灌溉设施的基础上配套实施精准施肥,充分发挥现有的节水设备作用,优化调度,提高效益,更加节水节能,降低灌溉成本,提高灌溉质量,使灌溉更加科学、方便,提高棉田科学管理水平,改善棉花品质,增加棉花产量。更多还原

【Abstract】 Basing on computer control system,several kinds of sensors are used to collectand monitorfield environmental parameterssuch as soil moisture,soil temperature,atmosphere temperature,atmosphere relative humidity,amount of field evaporation and soil salt content etc.Combining these parametersand mathematical model,we can predictthe time and quantityof irrigation for cotton filed.According to the change of soil temperature and moisture from the computer contral system,it also can offer controlled imformation and transfer controlled sygnal for the automatic irrigation system.Associatingwiththe water-requiredrule of all cotton growing period,we can provide scientificand reasonable irrigation scheme.Cooperatewith the precise fertilizationas well,we can utilizewater saving equipmentmore effectively to reduce irrigation cost,promote the cotton’s quality and yield.更多还原