Winter jujube post-harvest management technology summary
Soil and Fertilizer Water Management
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After deep plowing and soil picking, the soil is deep-turned, which can not only improve the physical and chemical structure of the soil, but also promote the deep rooting of the tree roots, enhance the robust growth of the trees, and enable the diseased leaves, fruit and weeds under the trees in the garden. Plow till soil as fertilizer. Jujube deep turning can generally be combined with autumn basal fertilization, and the depth of ploughing is preferably 20-25 cm.
Autumn fertilization should be applied timely after harvest in autumn. Base fertilizer should be mainly organic fertilizer, and according to the fertility of the soil, appropriate amount of available fertilizer, especially phosphate fertilizer, should be added. A deep ditch with a depth of 40 cm and a width of 60 cm can be excavated around the canopy, and the basal fertilizer and compound fertilizer can be uniformly mixed into the ditch and filled with soil.
The adult trees each have about 50 kilograms of each base fertilizer, 1 kilogram of compound fertilizer, and 25 kilograms of each base fertilizer and 0.5 kilograms of compound fertilizer.
Irrigation should be conducted in a timely manner after fertilization and fertilization, and irrigation should be conducted after the irrigation to ensure safe wintering.
Autumn and winter garden
The overwintering sites that cut off pests and diseases are mainly in the branches of the pests and branches and rough cracks in the trees. Therefore, timely cutting off the dead and dead branches of the trees, scraping off the old skin, and picking up the underground berries to remove the underground weeds. Burned or buried deeply.
Pesticides, bactericides and insect pests are easily overwintered in subterranean weeds, fallen leaves, fallen fruit, and shallow surface soil. Therefore, after the jujube tree deciduous, in addition to the whole tree spray lime sulfur, but also in the tree under the spray fungicide. When spraying, sprinkle with the ground around the trees, weeds and protective forest. Through insecticidal and bactericidal treatments, the number of worms is further reduced. As the autumn and winter period, the tree has fallen, the medication is not easy to cause phytotoxicity, at this time the drug concentration can be increased in moderation.
After the tree trunk is whitened or defoliated with grass and jujube trees, white paint is applied to the bases of the trunks and large branches to protect against cold. At the same time, it can also treat wintering turtle shells and other insect pests in the trunk. In the spring of next year, the grass handle will be dismantled and burned, which will eliminate a large number of overwintering pests and eggs parasitizing in the grass handle.
Pruning for pruning should be eliminated completely for over-closed branches and cross-over and overlapping branches to maintain ventilation and light transmission in the crown. For old branches and leg-length branches, resection can be carried out or retracted from the base of the main branches to promote germination. New branch.