| 高产麦田开花后干物质积累、运转、分配与产量形成 |
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| 引用本文： | 张立言,刘树欣,李振国,毕桓武.高产麦田开花后干物质积累、运转、分配与产量形成[J].北京农学院学报,1988(2). |
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| 作者姓名： | 张立言 刘树欣 李振国 毕桓武 |
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| 作者单位： | 河北农业大学
(张立言，刘树欣，李振国)，河北农业大学(毕桓武) |
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| 摘 要： | 高产麦田开花后的干物质积累、运转和分配是提高经济系数、提高粒重形成高产的关键。据对四个冬小麦品种的四年试验,开花后群体干物质积累与经济产量呈极显著正相关,其积累量约相当于籽粒产量;营养器官贮藏物质对产量的贡献约占粒重的35.5%,其中开花前的输出量约占粒重的4%。开花后天气条件的变化,对高产麦田的物质积累、运转和分配有显著的影响,即使在良好的栽培管理和群体结构比较合理的条件下,也可导致粒重和产量在年际间相差甚殊。而灌浆盛期的持续高温天气是高产麦田产量不稳的主要可变气象因素。
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| 关 键 词： | 产量 干物质 积累 运转 分配 |
ACCUMULATION,ATRANSLOCATION AND DISTRIBUTION OF DRY MATTER AFTER AFTHESIS AND YIELD FORMATION IN HIGH-YIELD STANDS OF WINTER WHEAT |
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| Zhang Liyan Liu Shuxin Li Zhenguo Bi Huanwu.ACCUMULATION,ATRANSLOCATION AND DISTRIBUTION OF DRY MATTER AFTER AFTHESIS AND YIELD FORMATION IN HIGH-YIELD STANDS OF WINTER WHEAT[J].Journal of Beijing Agricultural College,1988(2). |
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| Authors: | Zhang Liyan Liu Shuxin Li Zhenguo Bi Huanwu |
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| Abstract: | In 1981-1984, the accumulation, translocation and distribution of dry ma-tter in high-yield stands of winter wheat were investigated for 4 varieties.It was found that the period after anthesis was a crucial one in dry mat-ter production, translocation and distribution to raise economic index andgrain yield.There was a significant possitive relationship between the drymatter accumulation after anthesis and the economic yield, and the amount ofthe accumulation was approximately equal to the grain yield.From dry matterdistribution point of view, 35.5% of grain weight were derived from the as-similates stroed in vegetative organs, of which 4% had been mobilized beforeanthesis.In high-yield varieties and in rich-yield years, the amount and therate of the mobilized reserves in vegetative organs were higher than the oth-ers. The amounts of the mobilization were 348.33±91.15mg/stem,CV=26.60%,and those in different years were 343.02±80.09mg/stem, CV=23.40%.The hig-her amount and rate of the mobilization were the character of high yield.The essential ecological factor which affected the dry matter accumulationafter anthesis was the average of duinal temperature. The continued hightemperature more than 25℃, especially in the phase round about 20th day af-ter anthesis, would strongly affected the rate and the duration of dry matteraccumulation and the translocation which led to distinct differences of econo-mic yield and economic index among the years. |
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| Keywords: | yield dry matter accumulation translocation distribution |
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