ZHOU Jin-song.Primary Study on the Cultivation Characteristics of Hybrid Rice in Cold Region[J].HEILONGJIANG AGRICULTURAL SCIENCES,2002,(04):21-22.[doi:10.11942/j.issn1002-2767.2002.04.0021]
寒地杂交稻栽培特性的研究初报
- Title:
- Primary Study on the Cultivation Characteristics of Hybrid Rice in Cold Region
- 文章编号:
- 1002 -2767(2002)04 -0021 -02
- Keywords:
- hy brid rice ; density ; panicle integ rated period ; K fert ilizer
- 分类号:
- S511
- 文献标志码:
- A
- 摘要:
- 北方寒地杂交稻灌浆期长达40 ～ 50 d , 易受灌浆后期不良天气的影响, 存在库大源不足, 二次灌浆过早停止现象, 造成空秕率较高, 严重影响产量。试验表明:适宜的栽培密度, 能够保证单位面积上的有效穗数, 促进群体协调发展提高产量。齐穗期增施钾肥, 能提高杂交稻灌浆速率, 促早熟, 提高结实率及产量。
- Abstract:
- In no rthern cold reg ion the f illing period of hybrid rice last s for 40 ～ 50d , it is easly affectedby bad w eather at late filling period and exists the phenomenon that stordhouse in big but source isshort , the second filling period stops too early , so it leads to a high unfilled grain percentage w hich affectsthe yield seriously .The results showed that the sui table densi ty can assure the number of effectivepanicles in unit area , promote group g row th coordinately and raise the yield.At panicle integrated period, increasing K fertilizer can improve the f illing rate of hybrid rice , promote ripening and increase thefullfilled rate and yield .
参考文献/References:
[ 1] 蒋彭炎.水稻的若干生理特征[ J] .中国稻米, 1994 ,(2):43-45.
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备注/Memo
收稿日期:2001 -11 -29