Key points of kiwifruit management in early spring
To prevent diseases and insect pests in advance before germination and germination period, use 100 - 150 times barium sulfide to kill insects on trees or 3 - 5 degree stone sulfur mixture to kill eggs and overwintering germs. Early application of germinating fertilizer results in 1.5~2 jin compound fertilizer per tree for big trees and 0.5~1 jin for small trees. Erect the prop early, tie up the branches as soon as possible, erect the prop as soon as possible, and finish it before the leaves sprout. The kiwi fruit garden without vines should be tied in time before germination. Early shallow hoe, repair channel spring, kiwi orchard shallow hoe, rake tillage, break the capillary soil, promote orchard moisture conservation, at the same time repair irrigation and drainage channels. Early prevention of frost damage in the early stage of germination and leaf development, always pay attention to frost prevention. Orchard watering before frost, spraying 500~700 times of new lipid membrane solution on the ground and trees to keep warm and prevent frost; or adopting the method of fumigating the ground to prevent freezing.
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Seedling cultivation by cutting of grape branches and vines
Cutting is the direct use of grape branches and vines to cultivate seedlings. According to the different types of branches, cuttage can be divided into hardwood cuttage and green wood cuttage. (1) the principle of cutting rooting, the nodes or nodes of grape branches can take root, this kind of root is called adventitious root. On the grape vines.
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Cutting Seedling of improved varieties of Actinidia
In order to prepare the cutting seedling bed, the dry soil with high topography, loose soil and certain water retention capacity should be selected. After ploughing, the land was arranged into a seedbed about 1 meter wide and 25 centimeters high, mixed with a certain amount of river sand on the bed surface, and disinfected the soil twice with 1% 0.5% potassium permanganate. Softwood cuttings around the middle and late June,.
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