A coup for the management of grapes in greenhouses

Generally, in late December, the shed will be banned after the grapes have passed the dormant period. The plastic film should be a non-drip film with good light transmission, and it should be covered with straw at night to facilitate heat preservation. The grapes can be unearthed and put on shelves after the shed. After the grapes are unearthed, water enough water, and implement low temperature management in the first week. The grass thatch is put down during the day to maintain high humidity; the temperature during the day should be maintained between 20-25℃ and the shed temperature at night is about 0-5℃. When the grapes enter the germination period, the temperature of the shed during the day should be strictly controlled to prevent "blindness" of the branches and irregular germination; the suitable temperature is 22-28 ℃. During the growth period of the new shoots, the temperature during the day should be controlled at 25 to 28°C and around 12°C at night. To prevent the temperature from being too high, causing the new shoots to grow, the flower spikes, and the flower organs are not differentiated and developed. You can spray the flower King No. 3 on the shoots to suppress the main shoots.

After the grapes are unearthed, combined with backfilling cold-proof soil, applying high-quality organic fertilizer + new high-fat film combined with sprout water and applying ammonium bicarbonate to promote their development. After that, special fertilizers such as stalk promotion, fruit expansion, coloring, etc. can be topdressed, and nitrogen, phosphorus and trace elements can also be sprayed on the leaves. It can be sprayed before flowering, young fruit, and fruit swelling period to increase the nutrient delivery capacity, prevent flower drop, fruit drop, cracked fruit, rigid fruit, deformed fruit, and make the fruit beautiful in color and fruit shape. Good taste.

The key to disease prevention is to clean the orchard during the dormant period of fruit trees and disinfect them. After the grape leaves fall, combine winter pruning to cut off the diseased branches and vines, scrape off the old bark that may carry bacteria, remove the fallen branches, fallen leaves, tendrils, rotten fruits and other pathogens, and burn them together. Spray the general tree guard for disinfection, and smear the wound with antiseptic film to make the wound heal as soon as possible. Greenhouse grapes are prone to gray mold in the growing period due to high air humidity. It should be sprayed once or twice before and after flowering to prevent the infection of germs and affect the development of fruit trees.

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