Grape injury is caused by premature pruning or mechanical damage before grape sprouting in early spring, which can lead to difficulty in healing the transmitting tissues of the shoots. The sap is poured out from the wound and causes a large amount of nutrients to be lost.
According to the measurement, per kilogram of grape injury fluid, containing 1-2 grams of dry matter, of which about 2/3 is sugar and nitrogen compounds, 1/3 is potassium, calcium, phosphorus and other minerals. A new cut of a grape vine spread out 630 ml of bleeding fluid overnight. Injury is light, grape production decline; in serious cases the whole plant died. Injuries occur in the vines and the following emergency measures can be taken to save them:
1. Film dressing: Use a plastic film of 6-8 cm square or two layers of plastic film to wrap the scissor of the wound and wrap it with a string to make it airtight. If the injurious flow occurs in the middle of the dendrite, a 2 cm wide plastic strip can be used to tightly bind the injurious area to the wound and use the impervious fluid as the degree.
2, Rosin hot coating: Take the rosin in the container to heat and melt, and then hot coated on the grapevine wound; or with a hot iron directly to the side of the rosin while dripping on the wound, and then repeatedly with a soldering iron in the wound Place a few pieces and let rosin melt to increase penetration. If the amount of rosin is too small, you can pick some more and continue to brand it. After the rosin cools and solidifies, the wound flow can stagnate.
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