中国农业科技导报2012，Vol.14Issue(2)：127-133,7.DOI:10.3969/j.issn.1008-0864.2012.02.19
库尔勒香梨冠层光合有效辐射研究初探
The Study of Canopy Photosynthetic Available Radiation for Korla Fragrant Pear
摘要
Abstract
In order to understand the diurnal variation, characteristics of 3 dimensional distribution of Photosynthetic Available Radiation (PAR) and the size of leaf area index (LAI) on 2 kinds of shape for Korla Fragrant Pear, in the HOBOware automatic weather station and SUNSCAN canopy analysis system were used. The results showed that there were big differences of the diumal variation of PAR in different azimuths of the 2 tree forms. A single peak curve expressed the general tendency of "low-high-low" , and the PAR of different tree forms exhibited a unstable floating. There were 2 tendencies of 3 dimensional distribution of PAR. The PAR of delayed-open central leader shape was gradually descended from upper to lower, outer to inner, and had a larger fluctuation in the upper canopy, but in the lower was opposite. The PAR of open center shape was gradually descended from inner to outer, upper to lower. The mean value of LAI in different directions of delayed-open central leader shape was all greater than these of open center shape. By compared the mean value of LAI of different tree forms in different periods, it was considered that the mean value of LAI in senescence phase was obviously greater than full fruit period.关键词
光合有效辐射/叶面积指数/冠层Key words
photosynthetic available radiation/leaf area index/canopy分类
农业科技引用本文复制引用
梅闯,覃伟铭,木合塔尔·扎热,杨振,刘娟,李疆..库尔勒香梨冠层光合有效辐射研究初探[J].中国农业科技导报,2012,14(2):127-133,7.基金项目
国家林业公益性行业科研专项(201004085-2) （201004085-2）
新疆自治区"十二五"科技重大专项(201130102-1) （201130102-1）
新疆自治区果树学重点学科基金 （）
国家果树瓜类改良中心新疆香梨分中心建设项目资助. （）
