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我省双季稻区紫云英留种产量甚低,一般亩产只有10—15公斤。1975年尤溪县650亩留种田平均亩产种子仅6公斤。1983年以来,尤溪县农业局与省农科院结合紫云英鲜草高产栽培,进行了双季稻区留种高产技术研究及示范推广,取得了良好成效。1984年县良种场留种8.4亩,平均亩产种子44.15公斤;1985年梅仙留种25.6亩,平均亩产种子39.6公斤,其中一片高达56公斤。
Produced double-crop rice region in Yunnan Province Yunyang very low, generally only 10-15 kg per mu. In 1975, Youxi County, 650 acres of arable land to keep the average yield of only 6 kg. Since 1983, Youxi County Bureau of Agriculture and the Provincial Academy of Agricultural Sciences combined with high-yield cultivation of Astragalus sinicus, double cropping rice to stay high yielding technology research and demonstration and promotion, and achieved good results. In 1984, there were 8.4 mu of seedlings planted on county-level farms, with an average yield of 44.15 kg per mu. In 1985, Mei-shan kept 25.6 mu of grapes and produced an average of 39.6 kg of mu per mu, of which 56 kg was up to 56 kg.