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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (10): 95-99.

所属专题： 园艺

• 农学 农业基础科学 • 上一篇    下一篇

2种不同树龄磨盘柿树光合作用日变化的初步研究

王仲1,张文2,程玉琴2,徐践3   

  • 收稿日期:2009-12-01 修回日期:2010-01-06 出版日期:2010-05-20 发布日期:2010-05-20

Comparison of photosynthetic properties of Mopan Persimmon with different tree age

Wang Zhong1, Zhang Wen2, Cheng Yuqin2, Xu Jian3   

  • Received:2009-12-01 Revised:2010-01-06 Online:2010-05-20 Published:2010-05-20

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摘要：

对两种不同树龄、不同挂果量的磨盘树进行光合生理特性研究表明，不同树龄的磨盘柿，其光合速率日变化曲线均为双峰型，一天中最高值出现在上午10：00前后，次高峰出现在下午16：00左右；而光合午休持续的时间不同，15年柿树光合速率在下午13：00左右到达谷值后上升，而8年生柿树的光合午休提前和延长了1小时，即从12：00持续到14：00。不同树龄的磨盘柿蒸腾速率日变化曲线基本上为单峰型，峰值均出现在下午14：00左右。通过方差分析表明，在大多数测定时刻中，15年生柿树的光合速率明显高于14年生柿树。

关键词: 黄瓜枯萎病, 黄瓜枯萎病, 介质土壤, 根际微生物, 连作, 温室

Abstract:

The photosynthetic properties of Mopan Persimmon with different tree age and fruit setting were studied in this article. The results showed that the diurnal course of photosynthetic rate (Pn) of Mopan Persimmon which age was 8 or 15-year were both double-peaked curve with the highest value reached at 10:00 a.m and the second value occurred at 16:00 p.m, but It indicated that the sustained time of midday depression of photosynthesis were different. For the 15-year old Mopan Persimmon trees, the midday depression of photosynthesis occurred at about 13:00 p.m then the Pn increased, but for the 8-year old trees, the sustained time of midday depression of photosynthesis occurred from12:00 to 14:00. The variance analysis results showed that the Pn of 15-year old trees was significant higher than that of 8-year old trees at most moment measured.