【摘要】 本文研究了苹果梨果实畸变的原因，结果表明：果形偏斜与座果过多在生长期中互相挤压有关。果形严重畸变则是授粉不足或种子发育与生长不良的结果。这种变化在冬果梨的研究中也获得同样结果。对座果过多的果树可用疏花疏果的方法减少座果率。对果实畸变较重的果园则应采取增加适宜受粉树的配置和改进授粉的方法促进果树受粉和种子的形成更多还原

【Abstract】 The factors affecting fruit deformation of Pyrus Pyrifolia(Burm)Nakai,popularly knownas Pingguoli,were studied.The results showed that the slanting shape of fruit was due to thegreat density of fruit in the period of growth.Serious deformation resulted from deficient pollina-tion and the poor growth in the development of seeds. These changes in fruit were also found inPyrus bretschneideri Rehd,cv. Dongguoli. To get rid of deformation,the techniques of thinningflower and fruit can be employed.For orchards with seriously deformed fruit,selecting properlypollinating varieties of trees and improving the method of pollination are required to promote thedevelopment of seeds.更多还原