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作物学报 ›› 1987, Vol. 13 ›› Issue (04): 329-335.

• 研究论文 • 上一篇    下一篇

小麦“午睡”原因韵研究——Ⅱ.生理因子与“午睡”的关系

韩凤山;赵明;赵松山;王美云   

  1. 张家口农业专科学校; 河北省农科院农业生理生化物理研究所; 河北省沧州地区农科所
  • 收稿日期:1987-01-23 修回日期:1987-10-03 出版日期:1987-11-12 网络出版日期:1987-11-12

STUDY ON THE CAUSE FOR PHOTOSYNTHETIC“MIDDAY-NAP”OF WHEAT——Ⅱ.THE RELATIONSHIP OF PHYSIOLOGICAL FACTORS AND“MIDDAY-NAP”.

Han Fengshan; Zhao Ming; Zhao Shongshan; Wang Meiyun   

  1. Zhang jiakou Agricultural School
  • Received:1987-01-23 Revised:1987-10-03 Published:1987-11-12 Published online:1987-11-12

摘要: 从叶水势、气孔开度和叶可溶性醣量日变化动态方面研究了大田小麦“午睡”的原因。认为:叶水势下降及其所引起的气孔开度减小是形成午睡的重要原因。叶水势降至-14巴,光合作用迅速下降,气孔开度急速变小;气孔开度减到2μm 以下则影响光合速率。中午叶可溶性醣过量积累则抑制光合作用,此亦“午睡”原因之一。

Abstract: The causes for photosynthetic “midday-nap” of wheat were research-ed in the fields from the aspects of water potential of leaves,degreeof opening of stomata and accumulation of soluble carbohydrate。Theresults were obtained as follows:1.The weakening of water potential of leaves associated with th

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