赣北机采棉蕾期冠层光分布特性的研究  

Study on Bud Stage's Canopy Light Distribution Characteristics of Machine-harvested Cotton in Northern Jiangxi

作　　者：李永旗[1] 李亚兵[2] 崔爱花[1] 张丽娟[1] 谢业涛 李直兴[1] 高红兵[1] 夏绍南[1] 

机构地区：[1]江西省棉花研究所,江西九江332105 [2]中国农业科学院棉花研究所,河南安阳455000

出　　处：《棉花科学》2016年第4期15-21,共7页Cotton Sciences

基　　金：国家棉花产业技术体系资金资助(CARS-18-36)

摘　　要：运用空间统计学的方法,研究了不同密度下赣北机采棉蕾期冠层内光合有效辐射(photosynthetical active radiation,PAR)的空间分布。通过PAR截获率的半方差函数和等值线图来反映机采棉群体冠层内PAR截获率的空间格局。结果表明,高斯模型可以较好地描述赣北机采棉各密度群体蕾期冠层PAR截获率的空间相关性,决定系数均在0.9以上。赣北机采棉各密度群体冠层PAR截获率的空间格局相似,但其变异程度随密度增加而上升。此研究结果将有助于对PAR进行定量化地估算和精确定位,为赣北机采棉的标准化生产管理提供依据。We studied the bud stage＇ s canopy spatial distribution of photosynthetically active radiation { PAR） of ma- chine - harvested cotton grown at different densities in Northern Jiangxi, by the Method of spatial statistics. And we reflected the spatial pattern of machine- harvested cotton canopy PAR interception rate with the semi - variogram and contour maps. The results showed that Gaussian model could be used to describe the space correlation of machine - packed cotton canopy PAR interception rate, all determination coefficient above 0.9. The PAR interception rate of machine - harvested cotton canopy grown at different densities had similar spatial pattern, but the variation degree rised with the increase of density. The re- suits of this study will be helpful to the PAR quantifying estimate and precise positioning, and provide the basis for the standardized production management of machine - harvested cotton in Northern Jiangxi.

关 键 词：赣北 机采棉 冠层 光合有效辐射 空间统计学 

分 类 号：S562[农业科学—作物学]