论文部分内容阅读
在土地资源有限的条件下,要使农业不断发展,就必须在坡地上进行灌溉。在坡度很大的地段灌水是很复杂的。即使在平坦的土地上,大喷灌强度或从管道里渗出的水流也会使土壤湿润不匀和作物过湿。在坡地上,除了发生这些情况外,还会引起土壤冲刷,禾苗毁灭。在坡地上灌水时,灌水员对喷灌设备的技术管理必须予以很大的注意。管道接头和设备的任何部位都不允许发生漏水、阻塞和故障。要遵守规定的制度:喷灌机的
Under conditions of limited land resources, agriculture must be irrigated on the slopes in order to keep agriculture growing. Irrigation is very complicated on slopes. Even on flat land, large sprinkler strength or water seeping from pipes can cause uneven soil moisture and over-cropping. On the slopes, in addition to these conditions, they also cause soil erosion and the destruction of grasses. Irrigation on the slopes, irrigation technicians sprinkler irrigation equipment must pay great attention. Pipe joints and equipment are not allowed to leak anywhere, blockage and failure. To comply with the provisions of the system: irrigation machine