| 夏玉米高产群体呼吸速率与光合特性关系的研究 |
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| 引用本文： | 董树亭, 胡昌浩, 高荣岐, 王群瑛.夏玉米高产群体呼吸速率与光合特性关系的研究[J].玉米科学,1994,2(3):061-065. |
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| 作者姓名： | 董树亭 胡昌浩 高荣岐 王群瑛 |
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| 作者单位： | 山东农业大学 泰安 271018 |
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| 摘 要： | 夏玉米高产群体呼吸速率随着植株的生长发育逐渐增强,开花期达最大值,乳熟后急剧下降.高密度处理的群体呼吸速率大于低密度处理.叶面积大小是影响玉米群体呼吸速率的重要因素,随着叶面积指数的增加(5以下),群体呼吸速率不断增强,其后趋于相对稳定.单位干重的呼吸速率生长早期较高,尔后逐渐下降,至成熟时最低.群体呼吸占总光合的值因生育时期而异,供试品种三年全生育期总平均为30.64%.
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| 关 键 词： | 夏玉米 群体呼吸 叶面积 光合作用 |
Relationship Between Canopied Respiratory Rate and Photosynthetic Characteristics of High-yielding Summer Maize |
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| Dong shuting Hu Changhao Gao Rongqi Wang Qunying.Relationship Between Canopied Respiratory Rate and Photosynthetic Characteristics of High-yielding Summer Maize[J].Journal of Maize Sciences,1994,2(3):061-065. |
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| Authors: | Dong shuting Hu Changhao Gao Rongqi Wang Qunying |
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| Abstract: | Experiment results showed that the change in canopied respiratory (CR) rate of summer maize was a single peak curve through the whole growth period. Maximum value of CR rate occurred in anthesis stage. CR rate raised along with the increase of leaf area index (up to 4. 5). CR rate was higher in thick planting density than in thin planting density. The vertical distribution of CR rate was middle 4 leaveshop 4 leaves) bottom 4 leaves in Yedan 13(erectopatent type). CR rate of different plant organs was leaf >stem>ear>tassel. The percentage of CR/CP (canopied total photosynthesis)was 30. 64%. Canopied respiratory rate unit dry matter was higher at early growth stage and then decreased until maturity,it's the lowest at mature stage. |
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| Keywords: | Summer maize Canopied respiration Leaf area Photosynthesis |
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