辽西地区山杏开花及坐果习性研究

The study on the habit of bloom and fruit of Prunus sibirica in Western Liaoning Province

通过对山杏开花、坐果习性及其影响因子研究,认为南坡花期早,坐果率高;北坡花期晚,坐果率低;从萌动期到始花期所需的生物学有效积温为82.83℃;光照强度是促进雌蕊发育的主导气象因子;坐果率与日均温的相关性最大。在各类果枝中,花和幼果主要着生在花束状果枝和短果枝上,为了提高坐果率,应注重对花束状果枝和短果枝的培养。

The Prunus sibirica has a earliest flowering date and a highest fruit set centage in the south glope during the study of flowering and fruit set habit and their effect factors ,In the north glope the eases axe reversal ;It need 82.83℃ of the biological efficient accumulative temperature from bud to flowering. Illumination intensity is the dominant factor to accelerate pistil to develop; Fruit set is related with average temperature. Moat of flowers and fruits are growing on flower-clustered fruit branch and short fruit branch ,for increasing the fruit set centage we can emphasize to cultivate flower-clustered fruit branch and short fruit branch.