寒地粳型超级稻齐穗期冠层小气候研究  

Study on Canopy Micro-climate During the Full Heading Stageof Japonica Super Rice in Cold Region

作　　者：金延斌 孙玉友[2] 

机构地区：[1]八五六农场黑龙江垦丰有限公司,黑龙江虎林158418 [2]黑龙江省农业科学院牡丹江分院,黑龙江牡丹江157041

出　　处：《黑龙江农业科学》2012年第9期32-35,共4页Heilongjiang Agricultural Sciences

摘　　要：以寒地超级品种龙稻5号、松粳9号和普通水稻牡丹江19为试材,在不同肥力水平下对冠层小气候进行研究。结果表明:超级稻叶片挺直,可降低上层叶片对光合有效辐射的截取,提高群体内部的光照强度,群体中光照分布合理。各群体间光合有效辐射总截获率基本接近,但超级稻株型良好,中下部叶片得到较多阳光,群体内温度上升的快,而相对湿度上升较慢,这有利于植物的蒸腾和净光合速率。同时超级品种的叶片衰老缓慢,群体维持较大的光合面积的时间较长,产生了更多的光合产物,干物质生产一直保持较高水平,产量潜力高。The japonica super rice Longdao No. 5 and Songjing No. 9 and normal variety Mudanjiang 19 were used as materials to investigate canopy microclimate under different fertility levels. The results showed that the upright leaves of super rice could appropriate decrease of photosynthetic active radiation capture of the upper leaves, increase the intensity of illumination, and the light distribution was rational inside rice population. Pho- tosynthetic active radiation capture of each population reached almost the same,but super rice had good plant type, more sunlight was intercepted in middle-lower leaves, temperature of population upward fast, hut the rela- tive humidity increased slow,it favor for plant transpiration and net photosynthesis rate. Meanwhile,Super rice had slower senescence of leave,stronger photosynthesis produce capacity and a large amount of matter accumu- lation with high yield potential.

关 键 词：超级稻 冠层 小气候 

分 类 号：S511.22[农业科学—作物学]