Grape Shelter Management Technology

Grape Shelter Management Technology

First, buckle time. Tests have shown that Kyoho grapes generally take 45-50 days to pass natural dormancy. Kyoho listed from the end of May to the beginning of June of the following year should generally be baited in early December. Other early maturing varieties can be shed at the end of November. In the morning market, it can be shed after falling leaves, protected from light during the day and fully ventilated at night, and artificial cooling measures are taken to keep it below 7.2°C for more than 50 days, so as to pass natural dormancy. Second, control the apprentice. Greenhouse grapes in the early and late stages of growth, due to high temperature and humidity, prone to shoots grow. The measures to overcome are: (1) Control of temperature and humidity, pre-emergence shelf temperature 20-25 °C, relative humidity should be greater than 90%, after each growth period temperature should be controlled at 25-28 °C, relative humidity 60-70%. (2) In order to wipe off buds in time, in addition to the auxiliary shoots, to prevent canopy closure in the shed, only one stout bud is left in each section, and all buds within 30 cm from the ground are wiped off. (3) For the prosperous vines, they should pick up the heart several times in the early growth period and reduce the internode distance. For the excessive wang twigs, they should be pressed on the iron wire to slow down the growth potential, and ring cutting control can also be adopted. (4) Control the amount of nitrogen fertilizer application and increase the application of phosphorus and potassium fertilizers. For example, 50 kg of ternary compound fertilizer, 50 kg of urea, 50 kg of diammonium phosphate, and berry enlargement to maturity at the bud germination period will be applied 2-3 times per acre. Rare earth microelement fertilizer and photosynthetic microelement fertilizer. Third, improve the fruit setting rate. Combining control and growth, organic fertilizers are added and pruning in growth stage is used to promote vegetative growth to reproductive growth and transformation. Adjust the permeability of the shed, increase the amount of ventilation in the shed, in order to facilitate fruit setting, and timely cleaning dust in the shed film, improve the light transmittance. Conduct artificial pollination. Fourth, increase the coloring. Fertilizing mainly organic fertilizer, phosphorus and potassium fertilizers, can increase the accumulation of organic matter in the fruit, increase the sugar content of the fruit, and is conducive to coloring. Keep strong fruit and retain one fruit and one fruit. Reasonable production, the general production of 1500-1800 kilograms per mu, diligent film surface, increase transparency, and artificial light supplement with fluorescent lamps, improve photosynthetic efficiency. Before the fruit coloring, the leaves were removed and the fruit was fully bathed. When the fruit was softened and the fruit particles were color-filled, 250 times of the coloring sugar-enhancing agent was sprayed. The coloring agent was colored in 3 days and the fruit was fully colored in 7 days. Fifth, pest and disease control. The main diseases of grape grown in greenhouses are downy mildew, brown spot, and black pox, and the fruit is susceptible to white rot in the near maturity stage. The key to prevention and control is to control the temperature and humidity in the shed. Usually, the temperature should be controlled below 28°C. At noon, ventilation and dehumidification should be carried out to reduce the humidity in the greenhouse. Control the watering, and water the inside of the shed for 3-4 times. To avoid excessive application of nitrogen fertilizer, increase organic fertilizer, phosphorus and potassium fertilizers, improve plant resistance. When the disease is found, it should be sprayed with 500 times carbendazim or 1000 times thiophanate methyl or 500 times chlorothalonil.

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