How to manage planting jujube in summer

First, increase the rate of fruit setting

(1) remove roots and tillers. Root tillers will consume a lot of nutrients, it is found that root tillers should be planed in time. (2) wiping sprouts and picking hearts. To control the germination of jujube, the new buds with no space in the inner chamber should be erased, leaving only a few jujube hangers. (3) girdling. Trunk girdling can be carried out when 30% to 40% of the flowers bloom. The width of girdling should be 1 / 10 of the diameter of the trunk. To achieve no damage to xylem, ring peeling mouth does not leave stubble. After girdling, smear it with carbendazim 200 times solution and stick it with transparent tape. (4) after girdling, spray 2.5kg / 3.5kg ice on the plant in the morning or afternoon. It can also be sprayed at the flowering stage of jujube trees with 5PPm's 2mae 4mi D or 1OPPm's sodium naphthalene acetate solution.

Second, if there are more fruits after fruit thinning, fruit thinning should be carried out, and 3-5 fruits can be left on each jujube.

Third, the new jujube head, inner bore branch and backbone branch germinated on the thinning jujube, the fruit quality is poor and the fruit setting rate is low. In order to save nutrients, improve fruit quality and improve ventilation and light transmission conditions, the overgrown branches germinated on jujube heads and backbone branches at all levels, as well as dense branches and cross branches in the inner chamber should be removed in time when they are not lignified.

IV. Prevention and control of diseases and insect pests

(1) peach heart borer, tortoise wax scale, yellow spot bug and so on. It can be controlled by 5000 times liquid of mite Chong Qing or 2000 times liquid of Simuli, plus 600times liquid of Pinke. (2) anthracnose and jujube leaf spot. It can be sprayed with 800 times solution of methyl topiramate for prevention and control. (3) longicorn beetles. It can be caught manually when longicorn beetles come out in the morning to reduce the harm. (4) to control jujube tick, red spider and jujube armyworm. When there are more than 0.5 jujube wall lice per 100 leaves, spray 50% sulfur suspension 300 to 500 times to control. Spray once every 10 to 15 days and spray for 2 to 3 times.