黑龙江省主栽水稻品种抽穗模型研究初报

First Report on the Heading Model of Rice Varieties Mainly Cultivated in Heilongjiang Province

采用黑龙江省生产上主栽的早熟、中熟和晚熟的6个水稻品种,在哈尔滨地区做分期栽培田间试验。调查记载播种、插秧和抽穗期。采取平行观测的气象资料,分析温度对水稻抽穗期和水稻营养生长期的影响。结果表明:不同的插秧期水稻抽穗期变化很大,不同熟期的水稻品种插秧至抽穗期需要的有效积温差别明显,但每个品种需要的有效积温很稳定。

The experiment of transplanting by stage with six early, mediate and late maturity rice varieties mainly planted in Heilongjiang was conducted, and the sowing stage, transplanting stage and heading stage were investigated and recorded. The effect of temperature on rice heading stage and vegetation period was analyzed based on parallel observed meteorelogical data. The results showed that the heading stage of rice varied with different transplanting stage and there existed obvious effective accumulative temperature difference from transplanting to heading on different maturity varieties, but the effective accumulative temperature required by each variety was stable.