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| 紫茎泽兰光合特性研究 | |
| 引用本文： | 周世敏,孙运刚,欧国腾,赵宇翔,刘济明. 紫茎泽兰光合特性研究[J]. 现代农业科技, 2009, 0(22): 189-190,194 |
| 作者姓名： | 周世敏 孙运刚 欧国腾 赵宇翔 刘济明 |
| 作者单位： | 1. 贵州省罗甸县林业局,贵州罗甸,550100 2. 贵州大学林学院 3. 国家林业局森林病虫害防治总站 |
| 摘 要： | 为了解紫茎泽兰与环境因子的关系,寻找防治紫茎泽兰的突破口,通过Li-6400系列光合仪测定紫茎泽兰光合特性。结果表明：紫茎泽兰日净光合速率、气孔导度、蒸腾速率、光合有效辐射呈单峰曲线,到12∶00达到峰值;紫茎泽兰光合特性的日变化为净光合速率4.1～14.7μmol/m2.s、气孔导度0.160～0.361mol/m2.s、蒸腾速率3.2～10.6mmol/m2.s、光合有效辐射247～2 049μmol/m2.s;紫茎泽兰光饱和点为1 500μmol/m2.s,光补偿点为13.7μmol/m2.s,具有阳性偏阴的生态习性。 |
| 关 键 词： | 紫茎泽兰 光合特性 净光合速率 气孔导度 蒸腾速率 光合有效辐射 |
Study on Leaf Photosynthetic Characteristics of Eupatorium adenophorum Spreng |
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| ZHOU Shi-min,SUN Yun-gang,OU Guo-teng,ZHAO Yu-xiang,LIU Ji-ming. Study on Leaf Photosynthetic Characteristics of Eupatorium adenophorum Spreng[J]. Modern Agricultural Sciences and Technology, 2009, 0(22): 189-190,194 | |
| Authors: | ZHOU Shi-min SUN Yun-gang OU Guo-teng ZHAO Yu-xiang LIU Ji-ming |
| Affiliation: | ZHOU Shi-min, SUN Yun-gan,OU Guo-teng,ZHAOYu-xiang,LIU Ji-ming(1.Forestry Bureau of Luodian County in Guizhou Province, Luodian Guizhou 550100; 2. Forestry College of Guizhou University; 3 .Forest Diseases and Inspect Pests Prevention and Care General Station) |
| Abstract: | To find out the relationship between Eupatorium adenophorum Spreng and environment,and the breakthrough of its defence,the leaf photosynthetic parameters of the plant were measured using Li-6400 portable photosynthesis system.The reswlts were showed that the diurnal variation of net photosynthetic rate(Pn),stomatal conductance(Gs),transpiration rate(Tr),photosynthetic active radiation(PAR)were all singlepeak curves,reaching their highest points at 12∶00.The diurnal variation of Pn,Gs,Tr,PAR were 4.1～14.7μmol/m2.s,0.160～0.361mol/m2.s,3.2～ 10.6mmol/m2.s and 247～2 049μmol/m2.s,respectively.The light saturation point and light compensation point of Eupatorium adenophorum Spreng were 1 500μmol/m2.s and 13.7μmol/m2.s,respectively.It was indicated that the plant was light-demanding and slightly shade-tolerant. |
| Keywords: | Eupatorium adenophorum Spreng photosynthetic characteristics net photosynthetic rate(Pn) stomatal conductance(Gs) transpiration rate(Tr) photosynthetic active radiation(PAR) |
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