CAO Qing chang,WANG Le le,CAO Jun.Effect of Different Tree Shape on Photosynthetic Characteristics Diurnal Variation of Chestnuts[J].HEILONGJIANG AGRICULTURAL SCIENCES,2015,(03):47-51.[doi:10.11942/j.issn1002-2767.2015.03.0049]
树形对板栗树光合特性日变化的影响
- Title:
- Effect of Different Tree Shape on Photosynthetic Characteristics Diurnal Variation of Chestnuts
- 文章编号:
- 10022767（2015）03004903
- Keywords:
- chestnut; tree shape; photosynthetic characteristics
- 分类号:
- S792.18
- 文献标志码:
- A
- 摘要:
- 在板栗树整形上进行试验研究，其目的在于通过试验观测各树形生理指标，找出高效利用光能的依据，试验以板栗良种燕红为试材，以传统树形圆头形为对照，采用Li6400便携式光合测定仪测定了圆夹形V字形和篱壁形板栗树体的光合特性日变化。结果表明：V字形与篱壁形的板栗树平均净光合速率较圆头形分别高0.6和0.93 μmol CO2?m-2?s-1，蒸腾速率上午V字形、篱壁形比圆头形大，而下午圆头形比V字形和篱壁形稍大，气孔导度和二氧化碳浓度日变化与净光合速率和蒸腾速率规律基本吻合。表明V字形与篱壁形更利于板栗高效、充分利用光能，从而更有利于树体的生长与结果。
- Abstract:
- Chestnut tree shape was tested to observe the tree physiological indexes and find how to use the optical energy efficiently.Taking chestnut variety Yanhong as material and traditional round head shape as control,the photosynthetic characteristics were determined by Li6400 portable photosynthesis.The results showed that photosynthetic rate of “V” pruning and inverted planting were 0.6 and 0.93 μmol CO2 m-2?s-1 higher than that with traditional round head shape,and transpiration rate got the same trend in the morning while an opposite trend was obtained with transpiration rate in the afternoon.The results indicated that “V” pruning and inverted planting were beneficial to utilize light energy adequately and efficiently which promote growth and fruit nature to a higher degree.
参考文献/References:
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备注/Memo
国家林业局林业公益性行业科研专项资助项目（201104025）
曹庆昌（ 1961-）,男，北京市人，硕士，高级工程师，从事板栗科研及科技推广研究。E-mail：bj51503317@163.com。