How to manage a jujube tree to increase fruit yield
The web introduces the experience of managing jujube trees to increase fruit yield and some tips for caring for jujube trees during flowering, and will share the knowledge with everyone next.
In spring, when it is dry and the temperature is relatively high, the trees bloom early and the flowering period is short. If the temperature in spring is low, especially during the rainy season, the trees bloom late and the flowering period is longer. Jujube trees in the courtyard bloom earlier than those in the fields, and younger trees bloom earlier than older ones.
Pollination and pollen germination in jujube trees are closely related to the environment, hormones, and nutritional levels. Low temperature, dryness, strong wind, and excessive rain are not conducive to pollination and fruit setting. The most suitable temperature for pollen germination is between 22 and 26 degrees Celsius, with a relative humidity of 70% to 80% being the most suitable. If the temperature is below 20 degrees Celsius or above 38 degrees Celsius, or the relative humidity is below 60%, it is not conducive to pollen germination.
Fertilization should be done in a timely manner before germination. Applying nitrogen fertilizer can improve the germination rate of jujube trees, and the management techniques during the flowering period are crucial. This is why喷洒ing water and trace nutrients during the flowering period can improve the fruit-setting rate, which is usually done in late May. Top-dressing mainly uses nitrogen fertilizer and an appropriate amount of phosphate fertilizer, typically 0.5 kilograms of urea and 0.5 kilograms of diammonium phosphate per tree. After fertilization, it is necessary to water the trees, water the flowers, and loosen the soil to better maintain moisture.
During the flowering period of jujube trees, we should appropriately pick the new shoots of the jujube trees and trim the primary and secondary branches, which is beneficial for the growth of the developing branches. We also need to reduce the consumption of nutrients to improve the fruit-setting rate. Generally, when the new jujube tree tops grow two to six secondary shoots, the top should be removed. The secondary branches are pinched as they grow.
How to manage a jujube tree to increase fruit yield
When the three to four secondary branches at the base of the jujube tree grow to five to seven nodes, and the one to four secondary branches at the top of the tree grow to three to five nodes, the degree of pinching depends on the growth of the jujube head and the size of the space. Generally speaking, weaker branches are pinched harder, while larger spaces are pinched lighter, and smaller spaces are pinched harder. During this period, in addition to pinching, we should also remove the newly sprouted and unused jujube heads from the base as soon as possible, and clear the dense multi-year branches in the inner cavity. This can save more nutrients and promote ventilation and light penetration.
The timing for watering jujube trees during the flowering period is usually when the flowers are in full bloom, with foliar watering every 3 to 5 days. This can be combined with foliar fertilization to supplement the nutrients needed by the tree and reduce blossom and fruit drop. The best time for watering jujube trees is in the evening because the temperature is low, and the water evaporates slowly. After watering, the high humidity inside the tree canopy is maintained for a long time, and since the pollen of the flowers opened on that day has already dispersed, there is no loss of pollen due to water. The effect of watering is related to the degree of dryness during the flowering period, with the more severe the drought, the more obvious the yield-increasing effect. However, during the flowering period, the air humidity is low, which is not conducive to flowering and pollination, seriously affecting the yield. Therefore, watering during the flowering period plays a certain role in improving the fruit-setting rate. Hence, there is a saying among the people: "Dry and windy weather scorches the jujube flowers, but watering and spraying results in a full harvest."
Foliar fertilizers that can be sprayed on jujube trees during the flowering period include 0.3% urea, borax, ferrous sulfate, and zinc sulfate, all of which can improve the fruit-setting rate of jujube trees. Urea is particularly effective, and it can also be combined with watering in the jujube orchard.
The detailed explanation of how to manage jujube trees to increase fruit yield and the tips for caring for jujube trees during the flowering period shared in this article are for reference only!