【作者】 李亚东； 张志安； 吴林； 郝瑞；

【Author】 Li Yadong, Zhang Zhian, Wu Lin, And Hao Rui (Department of Horticulture,Jilin Agricultural University, Changchun 130118)

【机构】 吉林农业大学园艺系；

【摘要】 本试验比较了4种类型越桔叶片的光合作用特性,结果表明,高丛、半高丛、矮丛越桔和红豆越桔光合作用的年变化均呈一双峰曲线,高丛和半高丛越桔第一次高峰出现在7月初;矮丛和红豆越桔则出现在7月中旬,第二次高峰均出现在8月下旬。高丛、半高丛和矮丛越桔春季展叶后光合强度较高,9月中旬以后随着叶片变色老化迅速下降,而红豆越桔展叶后(5月26日-6月 20日)光合强度较低,9月中旬以后仍维持一定水平的光合强度。光饱和点和光补偿点表现为高丛 >半高丛>矮丛>红豆;呼吸强度则相反。光合速率则以高丛和半高丛高于矮丛和红豆越桔。更多还原

【Abstract】 Seasonal variation of photosynthetic rate of highbush, half-highbush, lowbush and lingonberry were presented as a two-peak pattern. The first peak reached in early July for highbush and half-highbush, and reached in mid-July for lowbush and lingonberry. The photosynthrtic rate of highbush, half-highbush and lowbush were high in early spring and decreased rapidly after mid-September;The photosynthetic rate of lingonberry was low in early spring but remained a relatively high level after mid-September. The light compensation point and light saturation point varied among 4 species. The ability of photosynthesis of highbush and half-high-bush was higher than that of lowbush and lingonberry.更多还原