After grape harvest, there will be a general phenomenon of tree weakness. Therefore, strengthening post-harvest management plays an important role in the overwintering of grape plants and the growth of new branches in the following year, and can lay a good foundation for the harvest of grapes in the coming year.
First, pruning and clearing gardens: On the basis of good summer cuts, continue to do a good job of topping, snoring, removing tendrils and thin and weak branches, and removing severely damaged leaves and leaves to reduce nutrient consumption and regulate the flow of tree nutrients. Promote buds full of mature eyes. Weeds are removed from the garden, and the diseased leaves, diseased leaves, diseased fruits, dead branches and debris are removed from the park and buried deep or burned to reduce the sources of diseases and insects.
2. Fertilizer after fruiting: After the fruit is harvested in late August, apply about 15 kg of available nitrogen fertilizer per acre orchard and add 30% urea solution for extra-root dressing 2 or 3 times to promote tree restoration. Normal growth, such as strong tree vigor, can be applied sparingly to prevent new shoots from stretching out and consume large amounts of nutrients. Generally, the basic fertilizer is reused before the fall of 9~10 leaves, and nitrogen, phosphorus and potassium are mainly used for fertilization. Each hole is applied into a decomposed farmyard fertilizer of 30 kilograms or a large manure (fermented well) as a barrel, and sulfur-containing ternary compound fertilizer is 0.4 kilograms. Cover with fine soil.
Third, loose soil to prevent drought and drought: in the base of fruit trees deep plowing about 18 cm, deep plowing can be combined with the release. When there is a lot of rain, it is necessary to clear the gutters in time. In case of autumn or winter drought, irrigation should be carried out in time to maintain the moisture content in the field not less than 60%, so as to facilitate the soil moisture.
Fourth, pest control: The main diseases of grapes are downy mildew, black pox, rust and so on. After harvesting the fruit can be sprayed with a 180-fold Bordeaux mixture. When the lesions appeared, they were sprayed with 700 times of Rhizoctonia WP, 75% of white bacteria 500 to 800 times, and 5% of rifazone 3000 times were also used for the combined treatment of leafhoppers and other pests.
Hot-dip galvanization is a form of galvanization. It is the process of coating iron and steel with zinc, which alloys with the surface of the base metal when immersing the metal in a bath of molten zinc at a temperature of around 840 °F (449 °C). When exposed to the atmosphere, the pure zinc (Zn) reacts with oxygen (O2) to form zinc oxide (ZnO), which further reacts with carbon dioxide (CO2) to form zinc carbonate (ZnCO3), a usually dull grey, fairly strong material that protects the steel underneath from further corrosion in many circumstances. Galvanized steel is widely used in applications where corrosion resistance is needed without the cost of stainless steel, and is considered superior in terms of cost and life-cycle.
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