Notice on Water and Fertilizer Management during the Grape Color Change Period
This article brings you the contents related to the green plant flowers aspect of the water and fertilizer management during the grape color change period. Next, the site editor will introduce to the netizens.
Notice on Water and Fertilizer Management during the Grape Color Change Period
Currently, grapes have entered the color change period. In order to effectively ensure the smooth color change of grapes, the management and control of fertilizers and water are very important. However, when the management of fertilizers and water does not meet the needs of grape color conversion, physiological disorders of grape color conversion will occur. Therefore, many growers pay great attention to the water and fertilizer management during the color change period. Let's understand together.
Fertilizer Management during the Grape Color Change Period
1. Potassium nitrate is a binary compound fertilizer with high potassium content, suitable for grape topdressing. But it should be noted that potassium nitrate contains nitrogen, which can promote grape expansion. However, it should be used cautiously in the later stage of grape color change, as excessive use can cause difficulty in color conversion. Usage: 10-15kg each time during the first expansion period (young fruit stage - hard core stage) and the second expansion period (hard core stage - early color change stage), and try to use less in the later stage.
2. Potassium sulfate is very suitable for the color change of grapes in the middle and later stages. It can promote the color change of grapes and increase the content of soluble substances and sugars. But it should be noted that potassium sulfate is a physiological acidic fertilizer, and long-term application will accelerate soil acidification. Usage: Use in the later stage of color change, generally 1-2 times, about 20 kg each time.
3. Monopotassium phosphate, due to its high phosphorus content, can promote grape root growth and bud differentiation. It is often used during the grape flowering process. It can be used 2-3 times during the color change period. In addition to potassium, phosphorus can also provide energy for this process. Usage: It can be used from the flowering period to the later stage of color change, but it can be used with other products after color change. For example, 10 kg of potassium sulfate fertilizer and 5 kg of monopotassium phosphate.
4. Potassium carbonate is very common in the planting process. Plant ash contains potassium carbonate. Growers can spray plant ash extract to grapes at a certain concentration to promote grape color change and sugar increase.
5. Fulvic acid has the effect of regulating soil and promoting root development. There is also a synergistic effect between fulvic acid and potassium fertilizer, promoting the increase of sugar and color. In addition, amino acids, seaweed extracts, and other potassium fertilizers can also be sprayed on the leaves.
Water Management during the Grape Color Change Period
1. That is, a smaller amount of soil moisture during the color change period is beneficial to the color change and maturation of grape berries.
2. It can easily cause physiological diseases such as waterlogging, root damage, inability to absorb nutrients, and fruit rot. If grapes in the south encounter暴雨 (heavy rain), floods during the color change period, they should be drained and ventilated in time and take disaster relief measures after the disaster.
3. It is necessary to water a few times with a small amount of water to ensure soil moisture, which is beneficial to the early color change and sugar increase of grapes.
Other Precautions during the Grape Color Change Period
1. Fertilization time. Consider the differences in temperature and humidity. It is recommended that fertilization time should generally be after 5 pm, which is more conducive to the absorption of grape plants.
2. Fertilization method. During the color change period, drip irrigation should be adopted according to the field time, once every 7-10 days; or fertilize or apply fertilizers at the embankment, 40-50 cm away from the root ditch.
3. Number of fertilization. Theoretically, it is recommended to apply fertilizers in small amounts multiple times, and 3-4 times of fertilizers can be applied during the color change period. However, in reality, due to different application methods and fertilization amounts, the number of fertilizations is also different.
4. Fertilization amount. This is determined by soil nutrients, tree strength, and yield. Since there are large differences, please consider the specific amount.
The above is the application method of fertilizers and water during the grape color change period.
The above () introduces the precautions on the water and fertilizer management during the grape color change period, hoping it will be helpful to you!