Summer grape topdressing management technology

Summer topdressing Grape berry needs to be hypertrophy during the growing season, and fertilizer should be applied in time. More nitrogen fertilizer should be applied, combined with phosphorus and potassium fertilizer, 20 kg of urea per acre, 15 kg of phosphate fertilizer and 10 kg of potassium fertilizer. The fertilization method can be applied by ring or groove method, and the soil is covered with water after application.
Irrigation and flood control often occurs after 7 months of high temperature and dry weather. At this time, the vineyard is flooded. If the ground is not disinfected, the hot air generated by the high temperature and dry ground will be transpiration. The high temperature type disease on the surface over the winter will be accompanied by hot air. The transpiration rises to the ear, making the ear susceptible to disease. According to the test, ground disinfection and non-sterilation were carried out before irrigation, and after 10 days, the incidence of ear was 0.39% and 46.4%, respectively. Therefore, the ground disinfection treatment must be carried out before the irrigation of the long dry orchard. The drug can be selected with 3 waves of stone sulfur mixture solution (note that the liquid does not stick to the leaves). Grape berry growth period, if the soil moisture is in a sufficient and stable state, while paying attention to rain and drainage, to ensure smooth irrigation and drainage.
Interplanting and weeding Grape berry softening period is the rainy season, and the labor in the garden is frequent, which is easy to cause soil compaction in the garden, affecting the development of berries and delaying maturity. After the berry is softened, it can be simmered and weeded and weeded 2-3 times to loosen the soil, increase the temperature difference between the garden and the night, reduce the humidity in the field, and promote the early maturity of the grape fruit.
Topping the grape shoots must be topped, and by picking the heart, it can save a lot of nutrients needed for the growth of new shoots, and promote the thickening of the leaves and the fullness of the flower buds. At the time of picking the heart, the new shoots are usually topped 3-5 days before the flowering, and at the latest flowering stage. When cutting grapes in summer, remove the diseased leaves that have been black pox to prevent the spread of infection. With the long growth of the new shoots of the grapes, the summer buds between each leaf axils can sprout into the secondary shoots at any time. The treatment of these secondary shoots is to remove all the secondary shoots below the inflorescence from the base after germination of the secondary shoots, leaving 1-2 leaves above the inflorescence. The secondary shoots near the top of the branch can leave 2-3 leaves to extract the heart to reduce the germination of winter buds. It is also necessary to cut off the developmental branches, buds, and weak branches that are free of spikes.
The leaves are removed and the grapes are colored and matured, mainly by sunlight. After the berry is softened, the old leaves that have begun to yellow and lose photosynthesis function are removed to facilitate ventilation and light transmission, accelerate the ripening of berries and reduce the occurrence of diseases. If the grape tendrils are entangled on the frame without treatment, it will bring inconvenience to the correct binding, harvesting, winter shearing and unloading of the new shoots, and the tendrils also consume a lot of nutrients. In the specific summer tube work, the newly stretched tendrils should be removed in time with the summer shears.
Foliar Spraying After the grape berry is softened, the foliar application of potassium fertilizer can promote the uniform coloration and early maturity of the berry. On the basis of applying 30 kg of potassium sulfate per acre in the berry phase, 0.2%-0.3% potassium dihydrogen phosphate or 3%-5% grass ash leachate is sprayed once every 10 days.
Prevention of cracking fruit 1-3 weeks before the berry harvest, spray 0.2% calcium chloride or 5000 times calcium hydroxide and 0.2% amino acid calcium, can effectively prevent cracking.
Prevention and control of diseases and insects, disease prevention, pest forecasting, grasping the key to prevention and control, timely spraying. During the growth period, the disease can be sprayed with 50% carbendazim WP 800 times solution, 800 times Dasheng M-45 and methyl thiophanate 1000 times solution, 50% bacteriostatic WP 600-800 times; The spider can spray 2,500 times more than the net; the mites are sprayed and smashed 3000 times.
After harvesting the harvested fertilizer, the harvesting of the grape fruit depends on the growth of the plant. About 15 kg of urea per acre is applied. If the soil is dry, it should be immediately watered after fertilization. It is also possible to increase the 0.3% urea solution for root dressing 2-3 times to promote the growth of the tree potential. If the tree is strong, it will be applied less to prevent the new shoots from stretching out and consume a lot of nutrients. The base fertilizer should be re-applied before the leaves of the grapes, usually from late September to early November. 5000 kg of decomposed pig manure and 120 kg of phosphate fertilizer were applied per mu.
Huaxian Liu Huimin
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