智能滴灌系统中土壤水分传感器埋设深度研究

智能滴灌系统顺应了我国水资源高效利用的要求,实现了作物的精确、适时灌溉,同时也为土壤水分状况的测量提出了更高的要求。土壤水分传感器恰好满足这个要求,其埋设深度是实现智能滴灌控制系统所需解决的最主要问题之一。通过对黄瓜根系分布特征和滴灌条件下黄瓜根区土壤含水率的变化规律的分析,初步给出了传感器在黄瓜根区的2种埋设方案。在垂直方向以地表以下5～10、20～30 cm处为埋设传感器的最佳深度,40～50 cm处为辅助埋设深度。

Burying Depth of Soil Moisture Sensors in Intelligent Drip Irrigation System

Intelligent drip irrigation system well adapts to water high-efficient utilization in our country,which achieves precise and timely irrigation,at the same time puts forward higher requirement for the measurement of soil moisture.Soil moisture sensors satisfy the requirement,and their burying depth is one of the most important subjects when we carry out the intelligent drip irrigation control system.Through analyzing distributing feature of cucumber roots and changing law of soil moisture in root district under dripping condition,preliminarily provide two kinds of assigning schemes on sensors in cucumber root district.The best burying depth of sensors in vertical direction is 5 to 10 cm and 20 to 30 cm depth underground,40 to 50 cm is subsidiary burying depth.