Garden selection:
It is best to choose a place with convenient transportation, convenient irrigation and drainage, good lighting and thick soil layer to build the garden, and purple rock can also be planted.
Planting techniques:
Choose two-year-old strong seedlings with strong growth and no pests and diseases to build the garden. The seedling thickness is required to be 0.8 cm, and it should be sown before spring germination 1 week.
Planting requires digging ditches (80 cm× 80 cm), with sufficient fertilizer and water.
According to the plant spacing of 2m× 3m, plant 1 10 plants in 667m2, and water 1 time.
Fertilizer and water management:
After the soil is thawed in late autumn or early spring, the area 1 m from the trunk of jujube tree to the crown projection should be ploughed for 25 cm to eliminate floating roots, promote root binding, increase soil permeability and eliminate overwintering pests in the soil.
Before germination in spring, cover the trees with black plastic film to prevent weeds from breeding and promote the root growth of jujube trees.
From the late September of/kloc-0 to the early October of/kloc-0, after the jujube fruits are harvested, 2,000-3,000 kilograms of base fertilizer should be applied every 667 square meters within one or two years after planting, and 4,000-5,000 kilograms of base fertilizer should be applied three years after planting.
Topdressing should be carried out before germination, early flowering and fruit expansion, combined with foliar spraying.
Shaping and trimming:
The tree shape of this variety should be free spindle shape or open heart shape.
The specific operation method of spindle shape is to select 1 large fruiting branch with a length of about 30 cm from the ground.
Generally, there are four or five fruiting branches in the lower layer and two or four in the upper layer of each large fruiting branch group, so that the fruiting branches are not crowded and do not cross the main branches, and the crown falls back after the crown growth meets the requirements.
Cross branches, upright branches, etc. Branches that are of no use value between big fruit branches should be thinned out from the base as soon as possible.
Results When the fruiting ability of the branch group decreased, suitable branches could be selected from the base for re-culture.
Picking in summer, girdling at flowering stage and spraying gibberellin can all increase the yield. ?
Improve the fruit setting rate. Ring cutting (peeling), coring, spraying water, spraying 10 mg ~ 15 mg gibberellin per liter and releasing bees at flowering stage can all improve the fruit setting rate.
Pest control:
Spray twice with a mixture of lime and sulfur of 4 Baume to 6 Baume before germination.
From May to July, spraying 15 ~ 20 days of bifendazole No.3 plus 1 500 times of bifendazole to control jujube gall midge, jujube budqu, jujube weevil and other pests.
Spraying 800 times of 40% carbendazim solution or 25% fenxiuning solution for 2-4 times after August to prevent jujube rust and jujube anthracnose.
Pesticides are prohibited before harvest 15 days.