The management of summer black grapes is more scientific
1. Timely pruning and thinning of the ears: The summer black grape has neat ears, many shoulders, and individual double ears.
It is recommended that one with double ears should be repaired. If the ears are too long, pinch the ear tips 1/5 to 1/4 10 days before flowering. On average, only 1 ear is left on each fruiting branch. In actual operation, according to the principle of “strong two middle and one weak, no leftâ€, that is, the upper end (front end) of the shelf is prosperous, and 2 ears can be left as appropriate, and the new shoots are medium-growing. Leave 1 ear, weak branches, no ears on cultivated branches. The total number of ears remaining per 667m2 is about 4000.
The seeds of Xiahei are densely grown and thinning is recommended. Artificial fruit thinning takes too much time. You can water small water during the fruit-blooming period, or combine spraying with bactericides, and consciously spray the ears to promote moderate flower and fruit drop. Or moderately shake or hit the tree body during the fruit-bearing period, which can also play a role in thinning flowers and fruits.
2. Enlarge the ears at the right time: Enlarge the grapes, which is beneficial to increase production and increase commodity value.
The summer black grape grows naturally and the fruit is small. This is the common feature of seedless grapes. It is recommended to expand. That is, 15 days after the flower fading, use 45-50mg/kg gibberellin solution, dip or spray the ears, and repeat once every 12-15 days.
Or when the grains of soybeans are large, spray or dip the ears with 45mg/kg gibberellin solution for 10ml of periorolone per 1～1,5kg (inhibition of stalk hardening agent), once.
3. Bagging of grape ears: Grape bagging has many advantages, including disease prevention, insect pest prevention, bird damage prevention, pollution prevention, yield protection, and quality assurance. The berries produced are not only beautiful, but also good in taste.
It is recommended that whether it is field production or greenhouse cultivation, strive for a full set of bags.
4. Fertilization and watering: It is recommended to reapply organic fertilizers in the production of summer black grapes.
When planting and building a garden, 5,000kg of organic fertilizer is applied per 667m2, and then every one year, expand outward along the side of the planting ditch, and apply organic fertilizer once in the ditch.
In the spring of the coming year, you can chase the grapes with a quick-acting nitrogen fertilizer to accelerate the germination and promote the growth of large ears. Apply high-nitrogen three-element fertilizer once for swelling fertilizer. Apply potassium fertilizer once before the fruit matures. Generally speaking, if the amount of fertilizer is not good, it should be determined according to soil fertility, yield, and tree vigor.
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