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利用化学药剂杀雄,配制杂种水稻是杂种优势利用的又一重要途径。从1970年开始,我国许多单位开展了这方面的研究,经十余年的努力,化杀研究取得了新进展,制种产量和纯度有了较大的提高,杂种一代示范面积也有了较大的发展。据1982年初步统计,全国水稻化杀面积59,500亩,制种1,420亩,其中广东省种化杀杂种一代2.5万亩,制种702亩。江苏省种杂种一代3万亩,制种600亩。浙江省种杂种一代
The use of chemicals to kill male, the preparation of hybrid rice is heterosis utilization of another important way. Since 1970, many units in our country have carried out research in this field. After more than 10 years of hard work, new progresses have been made in the research on the killing and killing, the yield and purity of seed production have been greatly improved, and the demonstration area of hybrid generation has also been larger development of. According to the preliminary statistics in 1982, the national paddy cultivation area was 59,500 mu and its production was 1,420 mu, of which 25,000 mu was planted and the seed production was 702 mu in Guangdong. Jiangsu Province, a hybrid generation 30000 acres, 600 acres of seed production. Zhejiang Province, a hybrid generation