Grape topping technique essentials! How to pick up the main and side branches
Grape topping technique essentials! How to pick up the main and side branches First, the concept of topping and role topping is to remove the tip of the growing shoot together with several young leaves. Grapes through topping, can reasonably regulate the distribution and transportation of nutrients in the plant, coordinate the contradiction between vegetative growth and reproductive growth, enable nutrients to supply effective flower and fruit needs, reduce nutrient consumption, prevent and control grape gluttony, promote precocity, Improve production and improve quality have an important role. Second, the method of picking and the picking of the heart of the technique include the results of the toppings, the toppings of the vegetative shoots and the toppings of the main branches. (A) Resulting branches topping 1, the results of the purpose and effect of the branch topping: As the result of the shoot shoots grow rapidly before flowering, consume excessive nutrition, affect the further differentiation of flower buds and bud growth, thereby reducing the fruit setting rate, through the heart can be adjusted tree nutrient distribution, short-term The nutrients are supplied to the inflorescence and the effect of increasing the fruit setting rate is achieved. 2, the results of the branch topping time: from a week before flowering to flowering can be carried out, but with 3-5 days before flowering as the best time to pick the heart. The methods for judging the flowering period of grapes include: (1) Pre-flowering characteristics: When the grape is blooming, the buds change from green to dark green or green-brown, each flower bud grows to full size, and the florets stand upright. The buds are fully separated in the inflorescence and are not crowded. This is the best time for the results of the branch topping. (2) Early flowering period: When a certain variety starts to see a small number of flower buds in the whole garden, about 5% of the plants begin to bloom, then the results of this variety will be picked up. 3, topping (1) During the harvesting period, young leaves or young shoots smaller than 1/3 of the normal leaves are removed. The optimum time for picking the young leaves is to remove 1/3 of the young leaves smaller than the normal leaves at 3-5 days before flowering or at the early flowering stage. (2) For varieties with serious flowering and fruit drop, leave 2-3 leaves on the inflorescence for more than 7 days before flowering. (3) Varieties that are susceptible to flowering and fruit flaking, 4-5 leaves in the inflorescence are preferred 4-5 days before flowering. (4) For varieties with high fruit set rate, 2-3 days before flowering, it is appropriate to leave 6-7 leaves above inflorescence. (5) Species with extremely high fruit setting rate should be more than one week after flowering, and 8-9 leaves should be left above the inflorescence. (b) Nutritional branches topping The vegetative shoots refer to the winter buds formed in the previous year, and the shoots without the inflorescence are formed after germination. In the Zhaoyang District, the vegetative branch generally retains 7-12 leaf toppings. It is appropriate to grow middle-aged shoots and leave 12 leaves to pick the heart. The weak growth branches leave 7-8 leaves to pick the heart and promote the growth of the shoots and the base. The winter buds are abundant; when the growth potential is too strong, the first time leaves 10 leaves topping, and when the secondary shoots grow to 7-8 leaves, the second picking is performed. (c) Main and lateral vine extension branches topping The main and lateral extension branches are mainly used to extend the extension of the main side of the crown. 1. To prolong the growth of shoots, we should select the stronger shoots in the lower part instead of the original ones, and pick up the hearts in 10 leaves to promote the thick growth of shoots. 2, to extend the shoot growth Zhongyong strong, in mid-September and late to complete the topping, in order to facilitate the extension of aging mature. 3, prolonging the growth of strong shoots, can pick up the heart in advance, promote the development of auxiliary shoots, disperse nutrition, to avoid leggy. Coagulation Analyzer,Auto Biochemistry Analyzer,Auto Blood Coagulant Analyzer,Blood Coagulant Analyze Guangdong Widinlsa International Co.Ltd , https://www.widinlsamachine.com