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1988年用23个水稻品种或组合,分早籼、中籼和晚稻三组,在屯溪、安庆、芜湖、滁州、巢湖、合肥、六安、阜南8点作分期播栽试验,测定了稻米的出糙率、精米率、整米率、垩白指数、直链淀粉含量、胶稠度和糊化温度。方差分析结果表明,中籼和晚稻抽穗成熟期的气候条件对优质米的形成是比较有利的,早籼抽穗成熟期的气候条件对优质米的生产极为不利。因此,作者提出在进行优质稻米品种的选育和生产时应着眼于中籼和晚粳。本文的下一部分则是依据安徽省农业气候区划、耕作制度、水稻播种面积、稻谷产量、稻谷年净调出量以及优质米适宜的灌浆成熟期气候指标(平均气温20—25℃),将安徽省优质米生产划分成两个一级区、五个二级区。
In 1988, 23 rice cultivars or combinations were divided into three groups: early indica rice, mid-season indica rice and late rice, and were sowed at 8 points in Tunxi, Anqing, Wuhu, Chuzhou, Chaohu, Hefei, Lu’an, Roughness, milled rice rate, whole rice rate, chalkiness index, amylose content, gel consistency and gelatinization temperature of rice. Analysis of variance showed that the climatic conditions of middle-late indica and late-rice heading maturity were more favorable for the formation of high-quality rice. The climatic conditions of early indica heading maturity were extremely unfavorable to the production of high-quality rice. Therefore, the authors propose that middle and late japonica should be focused on breeding and production of high quality rice varieties. The next part of this article is based on Anhui agricultural climate zoning, farming system, sown area of rice, paddy yield, net annual paddy output and high-quality rice suitable filling climate indicators (average temperature 20-25 ℃), Anhui Provincial high-quality rice production is divided into two first-level zones and five second-level zones.