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A Study on Several Factors of Photosynthesis of Chinese Pine Damaged by Pine Caterpillar

Li Kai Li Zhengyu Xu Zhichun (College of Forest Resources and Environment,BFU 100083)  
Based on the field experiment and the analysis of the information,the effects of defoliation caused by artificial method or damaged by pine caterpillar on the photosynthesis and its conditions of Chinese pine have been studied.The results indicate that the compensation of Chinese pine with certain defoliation rate is widespread. Under certain defoliaton rate,light and water, which is directly related with photosynthesis,have favourably changed to improve photosynthesis.Water situation is a critical factor in photosynthesis improvement process.
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