1 供试材料及来源材料:紫菜心、儿菜、莴笋的种子。来源:四川省广汉市蔬菜研究所。试验安排在上集灌区的两个蔬菜大棚内,供试的3个品种,每个品种在每个大棚内布两个点,每个试验点面积100m~2,共计1200m~,种植方法为温室内育苗,定植到扣地膜的大棚内。 1.1 育苗 3月5日在温室内育苗。紫菜心、儿菜每667m~2播种量为50g,莴笋每667m~2播量为60g,需用苗床 1 test materials and sources of materials: seaweed heart, vegetables, lettuce seeds. Source: Sichuan Guanghan Vegetable Research Institute. The experiment was arranged in two vegetable greenhouses in the irrigating area of ​​the upper set. Three varieties for testing were set up. Each variety was covered with two spots in each greenhouse, with an area of ​​100m ~ 2 each for a total of 1200m ~. The planting method was greenhouse Within the nursery, planting to buckle the film in the greenhouse. 1.1 nursery March 5 nursery in the greenhouse. Seaweed heart, vegetables every 667m ~ 2 sowing capacity of 50g, lettuce per 667m ~ 2 sowing capacity of 60g, need to use seedbed