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抛栽水稻产量形成及其生态特征的研究
引用本文:张洪程,黄务涛.抛栽水稻产量形成及其生态特征的研究[J].中国农业科学,1993,26(3):39-49.
作者姓名:张洪程  黄务涛
作者单位:江苏农学院 ,江苏扬州 225001 建湖县农科所 建湖县气象局
基金项目:江苏省“七五”重点科技攻关项目“新型耕作栽培技术及其应用研究”内容之一
摘    要: 以手插及机插稻为对照,比较观察到抛栽稻生长发育与产量形成上的优势:1.群体生长起步快,分蘖多,前期生长势较强;2.群体冠层结构匀称,改善了冠层通风透光条件,单位面积土地上绿叶量较多,光合势大;3.单位面积容纳的穗数与颖花量多,抽穗后群体光合层厚,源强库大。但亦表现分蘖成穗率略低及抗根倒力小等弱点。栽培上应恰当地取长补短。

关 键 词:抛栽水稻  器官建成  群体动态  小气候特征  产量构成

STUDIES ON THE YIELD FORMATION AND ECOLOGICAL CHARACTERS OF SCATTERED-PLANTING RICE
Zhang Hongcheng Dai Qigen Zhong Mingxi Su Zufang.STUDIES ON THE YIELD FORMATION AND ECOLOGICAL CHARACTERS OF SCATTERED-PLANTING RICE[J].Scientia Agricultura Sinica,1993,26(3):39-49.
Authors:Zhang Hongcheng Dai Qigen Zhong Mingxi Su Zufang
Abstract:Superiorities of the scattered-planting rice, in contrast with manual and mechanical transplantation, are shown as follows on the growth, development and yield formation. (1) Population grows rapidly at the beginning and produces more tillers. Intensity of growth is high during early period.(2) Canopy structure of population is well-proportioned, its enviroment on light and wind is improved. Green leaf area per unit of land area is more, photosynthetic power is larger. (3) Ears and spikeletes per unit of land area may be contained more, photosythetic layer of population is thicker. The source is sufficient and the sink is larger during late period. But inferiorities appear that percentage of productive tillers to total is slightly low and capability of root lodging resistance becomes weaker.As indicated above, technics of cultivation should utilize its superiorities and avoid inferiorities.
Keywords:Scattered-planting rice  Organ formation  Population dynamics  Microclimatic characteristic: Yield construction
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