在进行农田灌溉和排水试验时,常常需要测试土壤水分和灌排水量,目前有些仪器满足不了试验要求。在日本专家的指导下,进行常用的观测仪器试制,通过几年实践效果良好。其中定水位给水装置和翻斗式流量计在国内属首次应用,结构简单、使用方便、测量精度高,便于推广。 In the field of irrigation and drainage test, often need to test the soil moisture and irrigation displacement of water, there are some instruments can not meet the test requirements. Under the guidance of Japanese experts, trial production of commonly used observing instruments has been carried out and good results have been achieved through several years. The fixed water level water supply device and dump-type flowmeter in the country for the first time the application, the structure is simple, easy to use, high precision, easy to promote.