Jujube trees have higher self-fertilization rate, but they do not have pollination trees, but they have serious fruit drop and low yield. In order to improve the fruit setting rate and yield, in addition to strengthening the management of soil, fertilizer, and water, we must also pay attention to the following measures:
1, trunk girdling. In the trunk 10 to 20 cm away from the ground, with a sharp knife cut two rings, 0.4 to 0.6 cm wide, deep to the xylem, the skin peeled off, 1 month after the wound can heal. Note: (1) Weak trees do not strip; (2) Do not peel off time, and the appropriate period is flowering period; (3) Can not circumcise year after year, and take precautions to prevent pests harm.
2, flower spray fertilizer. Jujube flowering often encounters drought or dry hot wind, affecting the fruit setting rate, generally spraying 0.3% urea or boron, manganese, zinc, iron and other trace element solutions, all have obvious effect of increasing production.
3, can not spray pesticides during flowering.
4, spray auxin can increase fruit set rate, increase production.
5, Zaoyuan bee. Jujube trees are insect-borne flowers. Using bees to strengthen pollination can increase fruit setting rate.
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