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我们从1978～1981年引入的332份IR水稻品种(系)中选出主要品种(系)71份,并就60多个考察项目择取主要者进行统计分析,将所得结果与早籼二九青、矮南早39、广陆矮4号三个品种作一简单的比较,以期帮助大家了解IR水稻品种(系)的基本特征特性。一、主要性状 (1)生育期:IR水稻品种(系)的生育期均比对照品种长,品种间变幅较大,中迟熟类型占优势,还有一定数量品种(系)不能抽穗成熟。 (2)产量:71个IR水稻品种(系)的理论产量,最低为502.9斤,最高为1541斤。根据生育期的长短计算,其标准差及变异系数都比较大,表明产量分布范围较广。
We selected 71 major varieties (lines) of 332 IR rice varieties (lines) introduced from 1978 to 1981, and conducted statistical analysis on more than 60 survey items, and compared the results with those of Zao Indica 29 Green, Dwarf Southern as early as 39, Guanglu dwarf 4 three varieties for a simple comparison, with a view to help you understand the IR rice varieties (lines) of the basic characteristics and characteristics. First, the main traits (1) growth period: IR rice varieties (lines) of the growth period than the control varieties, varieties of larger amplitude, late-maturing types prevail, there are a certain number of varieties (lines) can not be heading mature . (2) Yield: The theoretical output of 71 IR rice varieties (lines) is the lowest, 502.9 kg and the highest is 1541 kg. According to the length of growth period, the standard deviation and coefficient of variation are relatively large, indicating a wider range of production distribution.