新疆不同密度下油葵干物质积累、分配及转移规律的研究  

Study on the regularity of dry-matter accumulation, distribution and translation with various densities in sunflower

作　　者：王冀川[1] 徐雅丽[1] 段黄金[1] 

机构地区：[1]塔里木农垦大学植物科技学院,新疆阿拉尔843300

出　　处：《中国油料作物学报》2002年第2期32-36,共5页Chinese Journal of Oil Crop Sciences

基　　金：塔里木农垦大学青年科研基金项目 (2 0 0 0- 11)

摘　　要：对新疆南疆地区油葵G10 1品种 4种密度下干物质积累、分配及转移规律研究结果表明 :(1)油葵干物质积累动态符合Logistic曲线变化 ,干物质增长速率呈单峰曲线变化 ,随密度增加 ,干物质积累降低 ,且生育期推迟 ;(2 )净干物质分配随生长中心的转移而发生变化 :幼苗期主要分配在叶片中 ,初蕾至初花期主要分配到茎秆中 ,花期是并进生长高峰期 ,以营养器官分配为主 ,灌浆后转向盘籽中 ,盘籽成为干物质分配中心 ;(3)各器官中积累的干物质转向籽粒的比例大小顺序为茎秆 >叶片 >花盘 ,转移量占籽粒干物质重量的百分比随密度加大而降低 ;(4)The sunflower dry-matter accumulation, distribution and translation with four densities were studied. The result were as follows: (1) The process of sunflower dry-matter accumulation could be simulated with Logistic curve. Speed of dry-matter accumulation showed a single peak curve. With the density increased, the dry-matter accumulation decreased. Furthermore, the effect of density would become stronger if sunflower growing stage came late; (2) Distribution of net dry-matter changed with the growth centre change. In seedling stage, net dry-matter mainly distributed into leaf, then into stem. After initial filling stage, the organ of growth centre was sunflower disc, as the net dry-matter distribution centre; (3) The ratio sequence of dry-matter translated into seed was stem>leaf>disc. With the density increased, the translated amount decreased; (4) The growth indexes of high yield population were proposed.

关 键 词：新疆 油葵 密度 干物质积累 净干物质分配 干物质转移 

分 类 号：S565.5[农业科学—作物学]