In May and June, jujube sprouts, leaf development, shoot growth and flowering and fruit setting period. In order to improve fruit setting rate and fruit quality rate, the following management measures should be taken.
1. Open branches. Through branches, branches, hanging branches, and other branches and other measures, so that the angle of the branches open, to achieve the tree air and light, leaves the purpose of a reasonable distribution.
2. Stubble and pick up the heart. The jujube head sent out from the canopy was promptly wiped; the jujube head hanging from the jujube head with no growth space sent out from the jujube stocks was re-plucked; the jujube-headed whole tree with growing space was left with 8 or less jujube heads. After taking care of the heart, all the rest re-absorbed.
3. Before the fertilizer water. Last year, when no fertilizer was applied after harvesting fruit, the trees in the full fruiting period should be treated with a hole. Each mus of 15 to 20 kilograms of urea and 30 to 40 kilograms of potassium sulfate should be applied. In early July, 0.5 to 1 kilograms of ammonium bicarbonate and 2 to 3 kilograms of superphosphate were applied to mature trees. Jujube trees need sufficient water during the growth period, especially during flowering and fruit development, and must be filled with water. It is worth noting that watering during the flowering period should not be so large that the water content of the root distribution layer should be 70% of the field water capacity. In drought years, small water can be used for pouring and the effect is also very good.
4. Flowering increase fruit setting rate. Spraying urea, spraying boron, spraying water, spraying 920, applying flower buds, and picking up the heart to increase the fruit setting rate.
5. Scratch. After the rain and after the watering of the jujube garden, we must timely pluck to remove the weeds and help protect the crickets.
6. Spray. In the middle and late June, 800 times liquid sprayed plus 25% triadimefon 1500 times 1 or 2 times to control turtle wax, date stickworm, date rust and so on.
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