LUAN Xiao-yan,DU Wei-guang,CHEN Yi,et al.Effect of Sowing Date on Accumulation of Assimilateand Growth Period of Soybean CultivarsLUAN[J].HEILONGJIANG AGRICULTURAL SCIENCES,2003,(04):9-10.[doi:10.11942/j.issn1002-2767.2003.04.0009]
播期对不同大豆品种生育阶段与光合产物积累的影响
- Title:
- Effect of Sowing Date on Accumulation of Assimilateand Growth Period of Soybean CultivarsLUAN
- 文章编号:
- 1002-2767(2003)04-0009-02
- Keywords:
- soybean; sowing date; growth stage; assimilate
- 分类号:
- S565.104.7
- 文献标志码:
- A
- 摘要:
- 以黑龙江省第一积温带的几个主栽品种为试村,研究了播期对其生育阶段与光合产物积累的影响。结果表明:适时晚播缩短了大豆的营养生长阶段,而对生殖生长阶段的影响较小。晚播与正常播期相比较,叶面积指数相近,光合速率降低,呼吸消耗强度大,干物质积累减少。晚播将使大豆的产量水平降低,降低程度因品种生育期差异而不同。 更多还原
- Abstract:
- Studies on the effect of sowing date on growing stage and accumulation of assimilatewere carried out by using major cultivars in No. 1 accumulation temperature zone of Heilongjiarg.province. The results showed that: feasible late sowing reduced nutritive growth period and therewas little effect on reproductive growth period. We compared the effect of late planting and nor-mal sowing the results were as follow: there was a similar LAl. Photosynthetic rate was de-creased, respiration rate was increased. Amount of dry matter accumulation went down. Yielddecreased and the droped yield was related to the length of growth period of soybean.
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备注/Memo
收稿日期：2003-02-18