Development of Soil Moisture Management for Cultivation and its Practical Use

本文研究了利用自动灌溉控制系统对土壤水分进行有效管理的方法，以提高蔬菜的质量和节省沙土栽培的劳动时间。介绍了地下土壤吸力计（带压力传感器的改进型田间式张力计）在蔬菜沙栽培土壤水分自动监测与控制中的应用。从沙栽系统（一种隔离沙床和滴灌的沙栽培）种植叶莴苣（Lactuca sativa L.）的实验结果来看，我们改进的采用地下土壤吸力计的自动灌溉系统可以在不影响温度变化的情况下保持稳定的土壤水分条件，有助于提高蔬菜产量

This study focuses on effective soil-water management using automatic irrigation control system for the purpose of high quality production of vegetables and saving of labor time in sand cultivation.Application of underground soil suction gauge (improved field-type tensiometer with pressure transducer) to automatic monitoring and control of the soil moisture in sand cultivation of vegetables was described.From the experimental results of leaf lettuce (Lactuca sativa L.) cultivation in Sandponics system (a type of sand cultivation with isolated sand bed and trickle irrigation), it is recognized that our improved automatic irrigation system using underground soil suction gauge allows the maintenance of stable soil moisture conditions without influencing temperature variation and is useful for high vegetable productivitySoil water management