以培矮64S/R292,Y58S/R292为材料,以丰源优299为对照,研究了水稻倒3叶叶长、叶宽、叶片披垂度、叶片卷曲程度等主要形态指标及其与产量的相关性.结果表明:培矮64S/R292,Y58S/R292叶片所处空间层高,叶片卷曲程度大,叶片挺直,不遮阴下部叶片,有效光合面积大,光合态势好.与产量相关性分析表明,倒3叶叶长、叶宽、叶片卷曲度与产量显著正相关,叶片披垂度与产量显著负相关.%Major morphological indexes. Length and width of the third leaf from top. Bend degree of leaf and curly degree of leaf and their correlation to yield were studied with Pei'ai 64S/R292. Y58S/R292 and Fengyuanyou 299 (CK) as materials. The results showed that the space of the leaves of Pei'ai64S/R292 and Y58S/R292 was higher, the curly degree of leaves was larger, the leaves were straighter, the effective photosynthesis area was larger and photosynthetic situation was better. The correlation analysis showed that significant positive correlation existed between yield and length and width of the third leaf from top and the curly degree of leaf, while significant negative correlation existed between yield and bend degree of leaf.
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