P.V.C 관을 이용한 습답배수 연구

A Study of the Use of Low and Wet Land by Underdrinage

1969년도(年度) 10월(月) 20일(日) 표류(表類) 2종류(種類)를 파종하고 1970년(年) 6월(月) 15일(日) 수확(收穫)을 이앙하고 본(本) 삼차시험사업(三次試驗事業)으로 하는 이유(理由)는 예산관계(豫算關係)와 제반사정(諸般事情)이 여의(如意)치 못해서 수도(水稻)에 대(對)한 조사연구(調査硏究)는 제사차(第四次) 사업(事業)에서 다루기로 한다.

Although underdrainage has been studied for a long time, it is the third attempt in korea to execute, using P. V. C.(plastic) suction pipes in the low and wet fields. First, three execution plots and three control plots were set, then the drainage method and volume, soil temperature, growth and yield of crops, and under ground water level in the execution plot have been examined. These experiments have conducted with No-ngnim No 6(rice), and Palgweng (rice) which are the recommended varieties. And the above experiments have been executed for seven months between January and July. 1970. The experimenntal method adopted and the results obtained through the exeperiments are as follows: