Increase sugar content
To enhance the sweetness, we can do this: 1. Picking up the old leaves near the ear at the right time can make the fruit have a lot of light time, which can speed up the ripening of the berries. In addition, the grape trunk or the main vine is stripped at the right time, and the upper part is cut off. The passage of leaf photosynthetic products to the underground root system allows carbohydrates to be stored in the upper part of the ground, which promotes the accumulation of sugar in the fruit. 2, in the color change to maturity, to maintain the maximum water content of the soil is about 50%; in the case of rainy weather, easy to cause soil compaction, timely drainage, after the softening of the berries, can be simmered, cultivated 2 to 3 times, reduce the field humidity. 3. Before the rapid growth of the berries, foliar spray is carried out using 0.4% potassium sulfate solution or potassium dihydrogen phosphate 800-1000 times solution. In addition, it is also possible to apply high-phosphorus and high-potassium water-soluble fertilizer in the color-changing period, and use it in combination with organic fertilizer.
Increase fragrance
When the grapes are nearing the coloring period, the new leaves of the tip are lighter to a certain extent, which is actually a normal phenomenon. At this time, the nutrients in the leaves should be transported to the fruit. But at this time, if the branches are still growing too much, the nutrients are still being consumed in vain, which is definitely not conducive to the accumulation of sugar. There are many new varieties of grapes. When measuring whether a variety is superior and whether it can sell a high price, a core factor is whether the fruit has a fragrance.
Increase fruit powder
The quality of fruit powder is on the one hand a measure of the price of the sale, on the other hand it also has a protective effect on the grapes themselves. This layer of fruit powder can reduce the evaporation of water, thus preventing the rapid water loss and shrinkage after fruit picking, and improving the storage property. In addition, it can avoid the formation of a moist environment on the surface of the grape, thereby reducing the infection of the bacteria and breeding diseases.
To improve the fruit powder, we can do this: 1 use more fertilizers with higher carbon to nitrogen ratio, such as fully decomposed or industrially produced organic fertilizer, water soluble fertilizer, reduce the use of acidic compound fertilizer (at least 1 time water soluble fertilizer), which is beneficial to fruit powder and Increase in sugar content. 2 Rational use of plant growth regulators (hormones), but not the amount and use of hormones. 3 The drug should be based on high-quality water, suspending agent or water-dispersible granules, avoiding the use of emulsifiable concentrates and inferior powders, affecting the formation and coverage of fruit powder.
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