2. Strengthen the management of fertilizer and water during the flowering period: ensure that there are sufficient nutrients in the "nutrient critical period of fruit setting" and "nutrient critical period of seed development" after the first flowering.
3. Regular pollination of grapes: from the beginning of the grape to the full bloom, spray 0.20% borax solution every 7 days for 2-3 times to promote the germination of pollen tubes and increase the fertilization rate.
4. Pruning and pruning of grapes in summer: topping the fruiting branches from the beginning of the flower to the full blooming period, and at the same time wipe off all the side auxiliary shoots, leaving only one auxiliary shoot at the top. After 7 days, leave 1-2 leaves to top the top auxiliary shoots. The secondary shoots will germinate 2 more times and be erased in time.
To sum up, do a good job in the management of the flowering period of grapes, ensure sufficient nutrients for growth, increase the insemination rate of grapes, and do a good job of pruning and topping, which can reduce the production of small grapes.
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