前言在毛主席无产阶级革命路线指引下,我省广大农村深入开展农业学大寨、普及大寨县的群众运动,掀起了一个大搞农田基本建设的新高潮,把推广采用地下排灌暗管代替明渠,作为建设高产稳产农田的重要措施之一。为了配合农村人民公社大搞农田基本建设,74年开始,我们对农田用的管材——水泥砂土材料进行了试验。于75年起先后在佛山地区农科所、南海县平洲公社西约大队、花县新华公社三华大队,进行了小面积推广使用。用人工夯打构件砌筑地下暗管,降低地下水效果良好。我们在电白县水电局预制场,用悬辊制管机试制了 Foreword Under the guidelines of Chairman Mao’s proletarian revolution, guided by the principle of proletarian revolution in our province, the masses in our province thoroughly conducted Dazhai in agriculture and popularized mass movements in Dazhai County, setting off a new upsurge in popularizing farmland infrastructures and replacing them with underground drainage and irrigation pipes Open channel, as one of the important measures to build high and stable yield farmland. In order to cooperate with rural people’s communes to popularize farmland infrastructures, we started the experiment on the farmland with pipe-cement-sand materials since the beginning of the 74th. In 75 years successively in Foshan Agricultural Science Institute, Nanhai County Ping Island commune West about brigade, Xinhua Xinhua Commune Huahua Brigade, carried out a small area to promote the use of. Using artificial ramming elements masonry underground pipe, to reduce the effect of groundwater well. We Dianbai County Bureau of hydropower prefabricated field, with a roller roller tube prototype