朝阳地区山杏花期及结实率影响因子的初步研究

Primary study on the factors influencing blooming phenophase and fruit-setting percentage of Prunus sibirica

山杏是辽宁朝阳地区主要的经济林树种,但结实率低。为解决这一问题,选取不同坡向、坡位(东北坡、东坡下腹、北坡、东坡上腹和南坡)的山杏林分,调查开花物候期和坐果率,研究不同气象因子对山杏坐果率的影响。结果表明:阳坡开花期最早,半阴坡略延迟,阴坡最晚。受温度、光照、相对湿度及风速影响,不同坡向的坐果率差异较大,即东北坡>东坡下腹>北坡>东坡上腹>南坡,同一坡向(东坡)的下腹要高于上腹。

Prunus sibirica is one of the main economical tree species in Chaoyang city,Liaoning,but its fruit-setting rate is usually low.In order to detect the influences of meteorological factors on fruit-setting rates of Prunus sibirica,blooming phenophase and fruit-setting rates of Prunus sibirica were investigated in different slop aspects and slop positions（the northeast slope,the lower position of east slope,north slope,upper position of east slop and south slop）.The result indicated：the flowering date of sunny slop was the earliest,that of half shady slope was a little delayed,and that of shady slop was the latest.Influenced by temperature,light,relative humidity and wind speed,the differences of fruit-setting rates among different aspect were large,i.e.the northeast slopethe lower position of east slopethe north slope〉the upper position of east slopthe south slope.In the same aspect（in the east slope）,fruit-setting rate in lower position was bigger than that of upper.