高大韧稻茎秆的抗折力研究

来源 :中国农学通报 | 被引量 : 0次 | 上传用户:roytuan
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以通过审定的高大韧稻新组合特优1012、中优253与2个大面积推广的杂交稻组合为材料,研究了高大韧稻与非高大韧稻的农艺性状和茎秆结构性状。结果表明,与矮秆水稻相比,高大韧稻特优1012、中优253的株高、剑叶长、宽,穗粒数、产量等都明显的高于其他的2个杂交组合;第一、二、三节间的抗折力更具有明显的优势。相关分析表明,水稻的抗折力与节间长度呈负相关,与节间粗度、厚度及干物重间呈正相关;其中抗折力与小维管束数目的相关系数最大,达0.974。
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