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Management Techniques for Grapes from March to Mid-April
Spring is the season when the grapes sprout, and the elongation, heading and flowering of the branches and branches are observed. From March to the end of April, the grapes should be treated with buds, shoots, spikes, and pests and diseases. Leave buds: From March to mid-April, the winter buds on the mother branch often have 70% to 80% germination, and care should be taken to keep the buds. Too many buds remain, it is easy to waste nutrients, weak tree vigor, is not conducive to fruit setting; but if too few buds are left, it is easy to cause vigorous growth of branches, which can easily cause serious flowering and fruit drop. Stubbles: Usually when one bud has germinated on one parent, one bud is left every 15-20 centimeters, leaving 2-5 new shoots for each result, and the rest are removed from the base. When the buds are wiped off, the apical buds or weak buds in the two buds are generally wiped out, and only one shoot is left in one bud. In order to ensure the yield, it is also possible to determine whether to leave the first coil when the new shoot grows to 4-5 leaves, but the nutrients are wasted. Fix shoots and tied vines: The preserved shoots left 5 leaves topping before flowering, but 8 shoots were left to pick up without flowers. After topping, the plants will sprout a large number of secondary shoots, leaving only 1-2 apical shoots at the top and leaving two leaves repeatedly topping the heart. The rest of the secondary shoots are erased. At the same time, it is necessary to tie the vines according to the growth of vines. Spike processing: In order to ensure the fruit setting rate, usually 1/5 of the panicle spikes are removed and sprayed with 0.3% boron plus 0.5% urea. Five days after flowering, artificial fruit thinning was performed on the ear with more results and then bagged. Disease prevention and treatment: The grape begins to prevent disease when it germinates from 3-5 leaves, sprays once every 7-10 days, especially after the rain, it must strengthen spraying protection, and pay attention to cultivating and weeding. In this period, we must prevent and control diseases such as grape black spot disease and gray mold. Blackpox can be used to control 8000 times of DuPont Fuxing, and gray mold can be used to prevent and treat 1500 times of quick keratin. In addition, the commonly used drugs, such as carbendazim 800 times solution, mancozeb 800 times solution, 800 times agent and other reagents to control the disease.