库尔勒香梨花序、序位和气温对座果率的影响

Effect of Inflorescence,Order Location and Temperature on Percentage of Setting Fruit of Fragrant Pear in Korla

通过对库尔勒香梨（简称香梨）不同序数、同一花序不同序位以及花期气温对座果率影响的调查分析，发现香梨的同一花序随着序位的升高座果率逐渐下降。在对香梨疏花时，初果期的幼树留取花序基部1，2，3序位的花朵，结果盛期的成年树序数少的花序保留基部1，2，3序位的花朵，序数多的留取基部1～4序位或1～5序位的花朵为最佳留花位置。

The investigation was conducted on the effect of inflorescence, order location and temperature on percentage of setting fruit of fragrant pear in Korla. It was found that in the same inflorescence,if the order location was raised, the percentage of setting fruit was gradually decreased. When thinning flower was carried out,the flowers at the 1st,2nd and 3rd order location of inflorescence base of the young fragrant pear tree in first bearing stage should be left. The flowers at 1st,2nd and 3rd order location of inflorescence base of adult fragrant pear tree with fewer ordinal number in bearing stage should be left. The flowers at 1st-4th or 1st-5th order locaton with more ordinal number should be left.