枣树开花多、花期长,养分消耗量大,坐果率低,且在生长期间落花落果现象严重。我区枣树花期正逢高温的盛夏,灾害天气多,因此花极易受高温、低湿、干热风等自然灾害的危害,致使授粉受精不良,产生大量落花落果。因此,保花保果是大枣丰产、稳产的关键。 Jujube flowering more flowering period, nutrient consumption, fruit set rate is low, and the flowers fall and fall during the growing serious. Jujube flowering period coincided with high temperature in summer, disaster weather and more flowers are vulnerable to high temperature, low humidity, dry hot wind and other natural disasters, resulting in poor pollination fertilization, resulting in a large number of falling flowers. Therefore, the flower Paul fruit jujube yield, the key to stable production.