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随着湖库网围养鱼和网箱养鱼的迅速发展,青饲料供不应求,水体富营养化加剧。为解决这个问题,湖北徘产科学研究所进行了青饲料水面浮植及养鱼效果的研究,现已取得初步成果。水蕹菜是一种高产优质饲料,可喂草鱼、团头鲂、罗非鱼、福寿螺以及其他草食性动物。据测定,用水蕹菜喂养草鱼,饲料系数仅30左右。在肥水中浮植水蕹菜,亩产可达1万公斤、在瘦水中浮植水蕹菜,须进行根外施肥,肥料的浓度为:尿素1.5％.磷酸二氧钾0.3％。
With the rapid development of fish culture and fish cage culture in the lake bank, green feed is in short supply and water eutrophication is aggravated. In order to solve this problem, Hubei Institute of Adrianomanology has carried out research on the surface flotation of green fodder and the effect of fish culture, and has achieved initial results. Water spinach is a high-yield, high-quality feed for grass carp, bream, tilapia, snails, and other herbivores. It is determined that the water spinous feed grass carp, feed factor of only 30 or so. Floating in the fertile water Aquatica cabbage, per mu up to 10,000 kilograms, planted in lean water water cabbage, must be fertilized root, fertilizer concentration: 1.5% urea. 0.3% potassium dihydrogen phosphate.