库尔勒香梨的正常果实(俗称母梨)呈倒卵形或倒圆锥形、长圆形,果顶(萼端)平圆,萼洼中深、中广,果面光滑,成熟时底色黄绿,贮藏一个月后逐渐变黄。近年又出现了几种不正常果实,有果顶突出而全果呈纺锤形(俗称公香梨或猪嘴梨)或表面呈蟾皮状,肉质变硬,以及果顶在成熟时呈深绿色而且经短期贮藏也不变黄的,还有全果呈凹凸畸形等类型,这不仅影响外观,而且降低了果实品质,给生产造成了损失。我们初步认为这是由营养失调造成的果实生理病害,并于1986年开始进行有关研究,现将初步结果总结如下。 Korla fragrant pear’s normal fruit (commonly known as the parent pear) was obovate or inverted conical, oblong, fruit top (calyx) flat round, calyx depression in the deep, wide, smooth fruit surface, maturity yellow-green, After a month of storage gradually turn yellow. In recent years, there have been several abnormal fruit, with fruit top prominent and fruit was spindle (commonly known as fragrant pear or pig mouth pear) or the surface was toad skin, meat firm, and the top of the fruit was dark green and mature After the short-term storage does not turn yellow, and the whole fruit is convex and other types of deformity, which not only affects the appearance, but also reduces the quality of the fruit, resulting in loss of production. We initially thought it was a physiological disease caused by malnutrition and started the research in 1986. The preliminary results are summarized as follows.