我省年亩产800斤以下的稻田约有1200万亩。其中因土壤渍害造成低产的约占1/3左右。因而改良渍害稻田是我省改土工作的主要内容。本文讨论的是渍水而土质粘重的稻田暗管排水的效果。 (一)供试验农田基本情况试验田位于西江下游低洼积水区。田面海拔(珠基)0.8—1.2米,1962年排水垦荒, There are about 12 million mu of paddy fields under 800 kg per mu in our province. Among them, the low yield due to soil stains accounted for about 1/3 or so. Therefore, to improve the soil damage paddy is the main content of our province soil improvement. This article discusses the effect of waterlogging and paddy soil drainage with sticky soil. (A) for experimental farmland The basic situation of experimental field is located in the lower reaches of the Xijiang low water area. Field surface elevation (bead base) 0.8-1.2 meters, 1962 drainage Reclamation shortage,