At the stage of harvesting the grapes before the leaves, the photosynthesis of the leaves will show a second peak. Therefore, we must pay attention to management during this period of post-harvest.
Protecting the leaves requires strict control of the use of anti-bacterial and sulfur pesticides to prevent premature aging of the leaves and reduce photosynthetic strength. Under normal circumstances, in addition to the Kyoho variety, the fruit should be used with little or no old leaves after harvest.
Fertilization and supplementation in summer yields high fruit yields. If the plants are not harvested in time after harvesting, it is difficult to restore the tree potential. Therefore, after harvesting the fruit, the tree should be topdressed in time, such as high-dimensional dew-soluble fertilizer (20-20-20+TE) water-soluble fertilizer.
Appropriate amount of pruning is usually carried out about 20 days after picking the fruit. For the strong main shoot, it can be cut at the 5-6th shoot point of the first leaf. For the secondary shoots, such as the shoots are strong, you can also trim like the main shoots. However, if the secondary shoots are small and the branches are suitable for fruit setting, they can be cut off directly from the base.
At this time, there are many rains and droughts, and the grapes will absorb more water. In this period, we must pay attention to trenching and do drainage and flood control work. In the autumn, the grapes will face drought again, and timely irrigation should be done to prevent drought.
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