In the adult grape plants, there are different degrees of perennial plant baldness. This phenomenon is commonly referred to as “eye blinkingâ€. That is to say, this part of the sprouts is blind and cannot be extracted. Due to the phenomenon of blinking, the tree is confusing and lengthy and the tree vigor is weak, so that it cannot be renewed. First, the reason why grapevines “wink their eyes†According to research and practice, the causes of a large number of “winks†in grape vines are as follows: 1. Grapes are excessively long in young trees, new shoots are not full, and shoots are not full. In addition to leaving the branches too long, the following year the poor nutritional conditions, the formation of blinking. 2, lack of fertilizer or excessive nitrogen, resulting in dendritic tissue is not full, poor leaf function, which leads to blinking. 3. If the branches and leaves are too confined or contain too much fruit, the illumination is insufficient. II. Control Measures of Grape Twigs “Blinking Eyes†Prevention and control of grape twigs “Blinking eyes†must be based on the understanding of the reasons why grape twigs “win open their eyes.†Based on the actual conditions of the park, appropriate technical measures should be taken to prevent and remedy the symptoms: 1 In the sapling stage, topdressing should be dominated by organic fertilizers, and it is not appropriate to over apply nitrogen fertilizers quickly. Organic fertilizers should be applied in autumn after fruit harvesting, and top dressings should be dominated in the first half of the year, especially in the rainy season. 2. During the rainy season, pay attention to the drainage of the vineyards, and control the watering at the late stage of grape growth. During March and April-June, when one vine grows and develops, it is necessary to spray 0.3% urea and 0.2% potassium dihydrogen phosphate solution every 10 days to meet the needs of bud differentiation and fruit enlargement. 4. During the appropriate period, thinning and fruit thinning should be carried out to adjust the load of the grapes. 5, the right amount of fruit clippings, not too long or too much, appropriate amount of shoots, picking the heart and handle the auxiliary shoots, so that the lighting conditions of the plane is reasonable, good differentiation buds. Timely sparse or retracted dense branches, overlapping branches and leggy branches. 6. For the weak tip of the eye-blinking site, leave 2-3 knots short, so that the next year a good branch, to update the old man. If the branches are thick, then the tip can be picked up and cultivated into the resulting mother or mother.
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