The grape is a kind of sweet-potassium fruit tree. Under the condition of potassium deficiency, the potassium-producing yield is 12.5-16.8% higher than that without potassium, the sugar content is increased from 13.4% to 17.8%, and the coloring is good. The weight of single fruit is obviously increased. At the same time, the major diseases of grapes (anthrax, blackpox, etc.) are significantly suppressed. According to the research and analysis conducted by relevant units, at least 10 grams of potassium fertilizer is required for each kilogram of grapes produced.
In the grape growing season, potassium fertilizer is mainly used for spraying fertilizers outside the roots because it has many advantages such as rapid absorption, good fertilizer effect, and timely supply. The combination of potassium spraying outside the root and preventing and controlling pests together can save labor. Its main technologies are:
The selection of potash fertilizers has proved that the application of potash fertilizers outside the roots of grapevines should include the use of potassium dihydrogen phosphate, potassium sulfate, high-quality ash extraction liquor, and other available potassium fertilizers. Potassium chloride should not be used. Chlorine is highly penetrating and can be caused by large quantities of entering the plant. Poisoning, and can reduce the sugar content of the fruit, reducing the quality of the fruit.
Determine the application time Potassium from the outside of the grape roots is mainly grown during berry enlargement and berry ripening. Plants growing vigorously can also be sprayed when the young fruit after flowering begins to grow. While spraying potassium fertilizer, it is necessary to use nitrogen and phosphorus materials in order to ensure that potassium fertilizer can normally exert its fertilizer efficiency.
The concentration of potassium dihydrogen phosphate is preferably 0.5-0.8%, potassium sulfate is 0.8-1%, and 3-5% is suitable for the leaching of grass ash. The concentration should not be too large to avoid fertilizer damage.
Select spraying time Potassium application outside the root should be carried out before 9 o'clock on the cloudy or sunny morning and after 5 o'clock in the afternoon. It should not be sprayed at high temperature in the noon.
Adding an adhesive to the fertilizer solution, adding an appropriate amount of neutral detergent or the like as an adhesive to maximize the time for the fertilizer solution to stay on the foliage to ensure sufficient absorption of the leaves and improve fertilizer efficiency.
Pay attention to the spraying technique. The potassium fertilizer is applied outside the roots of the grape. Both sides of the blade must be sprayed evenly. It is better to spray 60 kg per acre.
Other methods of potassium application After grapes are harvested, combined with the appropriate amount of potash fertilizer applied in autumn, they account for 30-35% of the total amount of potash fertilizer applied in the year.
In the grape growing season, potassium fertilizer is mainly used for spraying fertilizers outside the roots because it has many advantages such as rapid absorption, good fertilizer effect, and timely supply. The combination of potassium spraying outside the root and preventing and controlling pests together can save labor. Its main technologies are:
The selection of potash fertilizers has proved that the application of potash fertilizers outside the roots of grapevines should include the use of potassium dihydrogen phosphate, potassium sulfate, high-quality ash extraction liquor, and other available potassium fertilizers. Potassium chloride should not be used. Chlorine is highly penetrating and can be caused by large quantities of entering the plant. Poisoning, and can reduce the sugar content of the fruit, reducing the quality of the fruit.
Determine the application time Potassium from the outside of the grape roots is mainly grown during berry enlargement and berry ripening. Plants growing vigorously can also be sprayed when the young fruit after flowering begins to grow. While spraying potassium fertilizer, it is necessary to use nitrogen and phosphorus materials in order to ensure that potassium fertilizer can normally exert its fertilizer efficiency.
The concentration of potassium dihydrogen phosphate is preferably 0.5-0.8%, potassium sulfate is 0.8-1%, and 3-5% is suitable for the leaching of grass ash. The concentration should not be too large to avoid fertilizer damage.
Select spraying time Potassium application outside the root should be carried out before 9 o'clock on the cloudy or sunny morning and after 5 o'clock in the afternoon. It should not be sprayed at high temperature in the noon.
Adding an adhesive to the fertilizer solution, adding an appropriate amount of neutral detergent or the like as an adhesive to maximize the time for the fertilizer solution to stay on the foliage to ensure sufficient absorption of the leaves and improve fertilizer efficiency.
Pay attention to the spraying technique. The potassium fertilizer is applied outside the roots of the grape. Both sides of the blade must be sprayed evenly. It is better to spray 60 kg per acre.
Other methods of potassium application After grapes are harvested, combined with the appropriate amount of potash fertilizer applied in autumn, they account for 30-35% of the total amount of potash fertilizer applied in the year.
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