Kiwifruit's safe and overwintering technology for the northward cultivation

In winter, kiwifruit fruit trees in winter in the south of China can be used for safe wintering in the open air and no frost damage occurs. In northern areas such as Shandong, wintering protection is needed to ensure successful wintering. The time is from deciduous to before the soil is frozen (not later than the winter solstice).
First, the whole plant underground cover method
1. You can dig a slope ditch beside the base of the plant. It depends on the base of the trunk and it should be shallow, not to hurt the root system. Place the pruned tree lying in the ditch, do not break the branch, and then evenly cover all the soil. The base of the trunk should be thicker and have a head shape.
2, to further strengthen the protection, can be covered with a layer of dried straw, weeds and other organic matter on the top of the kiwifruit branches, and then cover the soil. In this way, the soil temperature can be increased more effectively, and it can withstand temperatures below -20°C.
Second, the entire plant on the ground to protect the law to trim fine kiwi branches along the forward line, overwhelming flat on the ground, and then cover the vines on the straw, weeds, etc., in the line is not easy to hurt the root to take a small amount of soil Pressing on or over the film can effectively prevent cold.
Third, the branches do not leave the winter protection law
1. For kiwi trees that are not easy to fall down, man-made fiber mats, broken quilts, waste paper, straw, weeds, etc. can be wrapped around the stems and branches, and then wrapped with a layer of plastic film to prevent overwintering.
2. For more adaptable species, a 50 cm soil mound can be planted around the base of the plant, which can be shaped like a taro.
Fourth, trunk coating method in the winter when the temperature does not exceed -15 °C in the area, for the more adaptable to the region's varieties do not need the entire plant overwinter protection, can be applied to protect the trunk of lime emulsion frost damage. The method is: using high-quality quicklime and adding 5 times of water to dissolve, add a little salt, add some soybean milk and stir well, apply it on the branches and stems of the tree, and add proper amount of lime sulfur residue to the emulsion. Mix thoroughly and coat the trunk. This will not only play a role in preventing freezing damage, but also have control effects on overwintering pests and diseases.
V. Clearing Overwintering Facilities in Time Every spring, the overwintering coverings shall be promptly removed before the sap flows to the expansion of the buds, and the shelves shall be reinforced in time. Avoid bruising its branch buds to ensure normal growth and development of kiwifruit fruit trees.
VI. Remediation measures for frost damage Once kiwifruit trees have suffered freezing damage in winter, the dead branches should be cut in time, and protective agents such as pick wax and paint should be applied at the cut points, and the trees should be sprayed with quick-acting nutrient solution to increase organic growth. Inorganic fertilizer, timely watering, etc., to restore the normal growth of kiwifruit fruit trees.

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