| 摘要: |
| 黄腐酸、NaHSO3及CaCl2抗蒸腾剂对蚕豆的生理效应测定结果表明,它们都具有抑制气孔开张、降低蒸腾的作用。200ppm的黄腐酸和1×10-2M的NaHSO3及CaCl2可抑制气孔开张度的60％,降低蒸腾30％～40％。抗蒸腾剂降低蒸腾的主要时间是11～18时,这7个h的节水量约占一日内节水量的80％以上。抗蒸腾剂的药效能维持7d左右。黄腐酸和NaHSO3在水分轻度胁迫时有明显促进光合的效应。 |
| 关键词: 抗蒸腾剂,蚕豆,气孔开张度,蒸腾强度,气孔扩散阻力,光合速率 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金资助项目 |
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| STUDIES ON THE EFFECTS OF THREE KINDS OF ANTI-TRANSPIRANTS UPON BROAD BEAN PHYSIOLOGY |
|
Ding Ziiongrong He Pongxiang
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| Abstract: |
| The effeets of the anti-transpirants---fulvic aeid,NaHSO3 and CaCl2 upon
broad bean physiology were determined.The results show that all the reagents
have the functions to inhibit somatal apterture,and decrease transpiration.The
concentration of 200 ppm for fulvic acid and 1×10-2 M for both NaHSO3 and
CaC12 can inhibit 60% of the stomatal aperture,and decrease the transpiration
by 30-40%.The effect time for the anti-transpirants to decrease transpiration
is from 11 a.m to 18 p.m.,during which period the saved water acounts for
80% of total water saved for a whole day.The effects of the reagents on transpiraton could maintain.for 7 days.The fulvic acid and NaHSO3 could promote photosynthesis when water stress is less serious. |
| Key words: antitranspirarits,broad beans,stomatal aperture,transpiration density,photosynthetic rate,resistance of stomatal expansion |
