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棚（室）采用垅沟浇水虽然简便 ,投资小 ,但缺点很多 ,一是垅沟占地较多 ;二是直接与机井垅沟相接 ,水多流急 ,垅沟和畦内极易跑水。加之水量不易控制 ,往往形成漫灌 ;三是灌水后容易造成地温降低 ,影响棚（室）蔬菜生长。同时由于棚（室）湿度加大 ,极易导致病害迅速发展。虽
Shed (room) Although the use of ditch ditch water is simple, small investment, but a lot of shortcomings, first, ditch ditch more land; second is directly connected with the machine ditch ditch, water and more urgent, ditch ditch and 畦 extremely easy Running water. Coupled with the water is not easy to control, often form flood irrigation; Third, irrigation is likely to cause reduced ground temperature, greenhouse (room) vegetable growth. At the same time as shed (room) increased humidity, can easily lead to the rapid development of disease. although