【摘要】 以十年生"黄果梨"为试材,开展其生长节律研究,并拟合回归曲线,进一步明确"黄果梨"枝条和果实生长规律,以期为生产提供参考依据。结果表明:"黄果梨"枝条年生长总体表现为先快后缓的增长趋势,5月中下旬为枝条生长的速生期,其后生长缓慢。果实发育经历迅速生长期、缓慢生长期、熟前速长期和采前缓慢增长期4个阶段,并且其发育过程滞后于枝条发育。"黄果梨"枝长生长以Logarithmic模型拟合效果最好,生长模型为H=0.556ln(t)+21.92;枝粗生长以Quadratic模型拟合效果最好,生长模型为D=-1E-05t~2+0.003t+0.362;"黄果梨"果实纵横径的生长以Quadratic模型拟合效果最好,生长模型分别为Z=0.000t~2+0.047t+1.054和H=0.000t~2+0.037t+0.884。更多还原

【Abstract】 Ten-year-old ‘Huangguo Pear’ was used as material,the growth rhythm was studied and regression curve was fitted to further clarify its branches and fruit growth rules,so as to provide the oretical basis for production.The results showed that the annual growth of the branches of ‘Huangguo Pear’ was fast at first and then slow.Fruit development go through four stages,rapid growth stage,slow growth stage,rapid growth stage before fruit ripening and slow growth stage before fruit harvest.Logarithmic model is the best fit for growth of vegetative branch length of ‘Huangguo Pear’,H=0.556 ln(t)+21.92.Quadratic model is the best fit for vegetative branches growth of roughness,D=-1 E-05 t~2+0.003 t+0.362.Quadratic model is the best for the growth of pear fruit vertical and horizontal diameter,Z=0.000 t~2+0.047 t+1.054 and H=0.000 t~2+0.037 t+0.884.更多还原