【摘要】 采用8个水稻品种,抽穗期进行剪叶处理,研究不同叶位叶片对籽粒充实的影响。结果表明:剪叶降低水稻的成粒率、粒重,尤其对后开花的籽粒影响较大,从而降低籽粒产量。各部位叶片对弯曲穗型品种的籽粒充实作用大小依次为剑叶>倒二叶>其他叶片,而半直立穗型品种剑叶影响最大。剪叶处理会显著增加空秕粒率。半直立穗型品种各叶片对产量影响差异较小;弯曲穗型品种剑叶对产量的影响远大于其他各叶片,且剑叶对水稻产量的影响弯曲穗型品种远大于半直立穗型品种。更多还原

【Abstract】 In this experiment,eight rice cultivars were applied for leaf-cutting treatment at the anthesis.The results indicated that leaf-cutting could lower the percentage of ripened grains and grain weight,especially influence greatly the grains with late flowering,and reduce the yield.The order of the effect that leaves contributed to curved panicle rice’s grain filling is as follows:the flag>the second leave from the top>other leaves,while to semi-erect panicle rice flag is the largest.Cutting leaves could significantly increase not-ripened grains percentage.There were little differences among effect of leaves to yield with different panicle type rice.The effect to yield of flag with curved panicle was much more than that of semi-erect panicle.更多还原