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当前位置: 首页 > 文章 > 强化栽培下水稻穗分化期叶片光合速率与水分利用率的研究 中国水稻科学 2005,19 (2) 132-136
Position: Home > Articles > Photosynthetic Rate and Water Use Efficiency of Leaves at Different Positions During Panicle Initiation Stage Under the System of Rice Intensification (SRI) Chinese Journal of Rice Science 2005,19 (2) 132-136

强化栽培下水稻穗分化期叶片光合速率与水分利用率的研究

作  者：
林贤青;周伟军;朱德峰;张玉屏;杨国花
单  位：
浙江省富阳市农业广播学校;浙江大学农业与生物技术学院;中国水稻研究所水稻生物学国家重点实验室
关键词：
光合速率;水分利用率;穗分化期;水稻强化栽培;水稻
摘  要：
用超级杂交稻两优培九、Ⅱ优7954和国稻1号作为研究材料,比较SRI水稻穗分化期不同移栽密度叶片光合速率和水分利用率。结果表明,SRI水稻稀植后能保持一定的叶面积指数,随着移栽密度从1.95×105 丛/hm2 下降到0.75×105丛/hm2 ,群体透光率增加,各叶位(第9叶至第13叶)叶片的光合速率和水分利用率明显提高,蒸腾速率降低,抽穗整齐度下降,第9叶和第10叶的光合速率和水分利用率提高的幅度较大。在试验条件下,水稻强化栽培的产量在移栽密度为1 65×105 丛/hm2 时最高。
译  名：
Photosynthetic Rate and Water Use Efficiency of Leaves at Different Positions During Panicle Initiation Stage Under the System of Rice Intensification (SRI)
作  者：
LIN Xian qing 1,2 , ZHOU Wei jun 1 , ZHU De feng 2,* , ZHANG Yu ping 2 , YANG Guo hua 3 ( 1 College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310029, China; 2 State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China; 3Fuyang Agricultural Broadcasting School, Fuyang 311400, China; *Corresponding author, E mail:zhudf@mail.hz.zj.cn)$$$$
关键词：
photosynthetic rate; water use efficiency; panicle initiation stage; the system of rice intensification; rice
摘  要：
The super hybrid rice combinations, Liangyoupeijiu, Ⅱyou 7954 and Guodao 1 were used as experimental materials under different transplanting densities, to study the photosynthetic rate and water use efficiency of leaves at different positions during panicle initiation stage under the system of rice intensification. When the transplanting density was decreased from 1.95×10 5 to 0.75×10 5 hills/ha under the SRI, the leaf area index remained constant, and the light transmittance of canopy,the photosynthetic rate and water use efficiency of the 9th to 13th leaves increased, while the transpiration rate of the leaf, and the identical degree of heading decreased. Higher photosynthetic rate and water use efficiency were observed in the 9th and 10th leaves under low transplanting density. In the SRI experiments, the highest grain yield was attained at the transplanting density of 1 65×10 5 hills/ha.

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