Improve the fruit set rate of jujube trees
The low fruit setting rate of jujube tree is mainly caused by nutrient competition due to vegetative growth and reproductive growth, and its jujube hanging growth, flower bud differentiation, flowering, and fruit setting go hand in hand. Second, jujube flowering and fruit setting require relatively high air humidity, while the northern jujube area is in the dry season at this time, it will also have adverse effects on fruit set.
Therefore, increasing the percentage of fruit set must begin with increasing nutrient supply, especially the level of organic nutrient supply and environmental conditions that improve pollination and fertilization. The main technical measures include flower opening period (ring peeling), spraying gibberellin (10-30 micrograms/ml), spraying trace elements (boron, molybdenum, bauxite, etc.), water spray, and jujube head topping Or spray growth inhibitors (PP333, chlormequat) and so on.
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