摘要
黄腐酸、NaHSO_3及CaCl_2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^(-2)M的NaHSO_3及CaCl_2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NaHSO_3在水分轻度胁迫时有明显促进光合的效应。
The effects of the anti-transpinnts--fulvic acid, NaHSO3 and CaQ2 upon broad bean physiology were determined,The results show that all the reagents have the functions to inhibit stomatal aperture, and decrease transpiration. The concentration of 200 ppm for fulvic acid and 1×10-2 M for both NaHS03 and CaCl2 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 H 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 tra-nspiraton could maintain for 7 days. The fulvic acid, and NaHSO3 could promote photosynthesis when water stress is less serious.
出处
《西北农林科技大学学报（自然科学版）》
CSCD
1989年第4期69-74,共6页
Journal of Northwest A&F University(Natural Science Edition)
基金
国家自然科学基金
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
antitranspirarits
broad beans
stomatal aperture
transpiration density
photosynthetic rate
resistance of stomatal expansion
