Sun Haizheng.Elementary Studies on Termination of Ef fective Tillering for Rice in Cold Region[J].HEILONGJIANG AGRICULTURAL SCIENCES,2000,(04):4-6.[doi:10.11942/j.issn1002-2767.2000.04.0004]
寒地水稻茎蘖等穗期研究初探
- Title:
- Elementary Studies on Termination of Ef fective Tillering for Rice in Cold Region
- 文章编号:
- 1002- 2767( 2000) 04- 0004- 03
- Keywords:
- rice in cold regio n; ratio of ti llers surviv ed; end date of ef fective ti llers; da te of spikes-ti llers equal
- 分类号:
- S511. 101
- 文献标志码:
- A
- 摘要:
- 对不同时期出生的分蘖挂牌观察表明: 因品种熟期、插植密度、秧苗素质的不同,分蘖出生迟早、数量及成穗率差异均较大。本田分蘖成穗率与分蘖出生于移栽后的天数呈直线负相关,由于分蘖成穗率下降呈连续变化,故茎蘖数与最后收获穗数相同时期不宜称之为有效分蘖终止期而应称为茎蘖等穗期为宜。
- Abstract:
- The investiga tio n resul t show ed that there are g reat di fferences in til ler number as the maturity o f va rieties, transplanted densi ty a nd seedling quali ty are dif ferent. The emergence date o f first ti ller, tiller number and the ratio o f surv iv ed spikes hav e g reat dif ferences too. The ratio o f survived ti llers has nega tive relatio n to the date of tiller emergence af ter t ransplanting. Since the ra tio of ti tlers surviv ed wi ll decreased continuously , the date w hen tiller numser i s equal to the harv ested spike number i s no t the end date of effectiv e ti ller but the spike-killer equal date.
参考文献/References:
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备注/Memo
收稿日期: 2000- 01- 25
作者简介: 孙海正( 1969- ) ,男,助研,学士,从事寒地水稻育种研究。