１材料和方法 试验于１９９９年１月－２０００年５月在云南省祥云县生态农业示范国进行。园地为红壤，胶泥土，土质较粘重。试验地采用长 ５０ ｍ、宽 ５ ｍ、顶高 ３ ｍ塑料大棚，面积 ２５０ ｍ２；大棚两侧装有微喷节水系统，靠地形高差自压灌溉；大棚采用透光性能好的无滴 1 Materials and methods The experiment was carried out in the demonstration eco-agriculture country of Xiangyun County in Yunnan Province from January 1999 to May 2000. Garden for the red soil, clay soil, soil more sticky. Experimental use of 50 m long, 5 m wide, top height 3 m plastic shed, an area of ​​250 m2; shed on both sides with a micro-jet water system, by topographic self-pressure relief irrigation;