近几年来,晚粳田套播紫云英,由于晚粳稻长势好,成熟迟,稻肥共生期长,大面积绿肥生长较差、产量低,部分田甚至变为空白,引起杂草增多,无效耗费地力。同时,随着节粮型养殖业(如养羊、鹅、鱼等)的发展,优质青饲料的来源不足。针对上述现状,从1986年起,我们进行了稻田紫云英与黑麦草混播种植 In recent years, late japonica field sowing Astragalus, due to good late rice growth, late maturity, long rice co-growth period, large-scale green manure poor growth, low yield, some fields even become blank, causing weeds to increase, Ineffective At the same time, with the development of grain-saving farming (such as sheep raising, goose, fish, etc.), the source of high quality green fodder is not enough. In response to the above situation, since 1986, we conducted a mixed sowing paddy field planted with ryegrass