丝瓜—冬莴笋—春莴笋栽培模式效益较好,每667 m2年收入达4万元以上,但为了克服连作障碍,还应考虑与水稻、菜薹轮作。近年来,湖南省益阳市沙头镇推广丝瓜—冬莴苣—春莴苣一年三茬高效栽培模式,已形成一村一品的生产格局,栽培面积达到400 hm2,并有逐年扩大的发展趋势。每667 m2丝瓜平均产量6 000 Loofah - winter lettuce - spring lettuce cultivation efficiency is better, every 667 m2 annual income of 40,000 yuan or more, but in order to overcome the continuous cropping obstacles, should also consider and rice, cabbage rotation. In recent years, Shatou Town, Yiyang City, Hunan Province, promoting the efficient cultivation mode of loofah-winter lettuce-spring lettuce in three crops a year, has formed a production pattern of one village one product with a cultivated area of ​​400 hm2 and an expanding trend year by year. The average yield of loofah per 667 m2 is 6 000