Methods of improving fruit setting rate of jujube trees

For jujube trees to have high yield, fruit setting is the most important. Management depends on technology, sitting on fruit to find rules. Florescence should be grasped, and the secret should be kept in mind.

First, the flowering period of jujube is longer, generally 35 days, that is, from May 25 to June 30. Florescence is divided into early flowering stage, full flowering stage and late flowering stage. It is in full bloom around June 8. The fruit setting rate is high at full flowering stage and late flowering stage, accounting for 50% of the total fruit.

Second, the fruit setting rate jujube tree flowers are very dense, big fruit jujube blossoms more than 100, but the fruit setting rate is only 1%. Jixin jujube blossoms about 300 per flower, and the fruit setting rate is generally 2%.

Third, pollination jujube flower is an insect-pollinated flower, it can not pollinate by itself or by the wind. During the flowering period, insects such as bees should be used to pollinate, or drug pollination, to improve the fruit setting rate.

Temperature and humidity June weather, high temperature, less rain, more dry and hot wind. It is suitable for fruit setting when the temperature is about 35 ℃, but not when the temperature is lower than 28 ℃. The fruit setting rate is the highest in the weather with high temperature, no sun, no wind and muggy weather. Dry, hot weather is not easy to set fruit, must spray water to protect flowers, at the same time to ensure soil moisture. Too much humidity is not suitable for fruit setting.

5. Hormone fruit setting according to the characteristics of long flowering period and low fruit setting rate of jujube, drug fruit setting can be used in full flowering stage, such as GA3, 2-line 4-ray D pollination, cytokinin, 20% compound potassium nitrate, Shengliyuan, Nongfeng Hercules, compound nitrophosphate potassium essence, rare earth boron fertilizer and so on, which can increase fruit setting by 1-2 times.

Sixth, calender jujube is a traditional folk management mode, which can play an effective role in river closure. Calming jujube every 3-5 days in full bloom can increase the fruit setting rate and increase the yield.