What medicine is good for vineyard cleaning and sterilization?

There is no fruit powder on the grapes, there is a layer of oily bright surface, first of all, to see if it is a problem with the variety, there are many varieties of grapes that are thinner fruit powder, such as Jufeng and Xia Hei. The pesticides in the emulsifiable form that have the greatest impact on fruit powder are used. The emulsifiable concentrate in pesticides is a surfactant (an organic solvent) that dissolves grape fruit powder and makes the surface of grape fruit gloss.

Therefore, in order not to damage the grape fruit powder, after the grapes are powdered, spray pesticides as little as possible; Try not to choose emulsions, microemulsions, first of all, water agent (water agent will not harm the fruit powder), you can use powder potassium dihydrogen phosphate, the effect will be very good.

Top dressing: Top dressing is selectively fertilized according to the different phenological stages of the grapes. It can be divided into germination fertilizer, flowering fertilizer, fruit strengthening fertilizer and ripening fertilizer. The exact amount of fertilization should be based on the yield requirements of the tree and the fertility of the local soil.

Germination fertilizer: about February to apply a germination fertilizer, germination fertilizer is mainly nitrogen fertilizer, can use Yanwo water-soluble fertilizer nitrogen fertilizer, using furrow application or hole application.

Pre-flower: In late April, apply a pre-flower. Pre-flowering fertilizer, mainly nitrogen fertilizer and phosphorus fertilizer, with Yanwo water-soluble fertilizer high nitrogen and high phosphorus type, need to be watered immediately after fertilization.

Fruit-strengthening fertilizer: Yanwo potassium fertilizer can be used, and furrow application or hole application is still used.

The growth period of young fruits is the peak fertilizer demand of grapes in a year, and fertilization at this time not only promotes the growth of young fruits, but also has a good effect on the growth of branches and leaves of the year.

Coloring fertilizer: also known as ripening fertilizer.

Post-harvest fertilizer: After the fruit is harvested, due to the large nutrient consumption of the tree, fertilization is required to ease the tree and delay defoliation.

The guy uses this kind of thing to disinfect the vineyard, and the effect is 10 times better than pesticides.

Grape clearing method: In the process of grape garden cleaning in winter, the use of stone sulfur mixture and sodium pentachlorine can kill overwintering pests and diseases, reduce the number of pesticides in the next year, and have a certain control effect on downy mildew and white rot. Therefore, the selection and pairing of Qingyuan medicine is crucial.

Usage: Use 2 kg of sodium pentachlorophenol to 200 kg of water per mu, and add 6 packs of stone sulfur mixture. First, the stone sulfur mixture is dissolved in boiling water and put into the barrel, and then the sodium pentachlorophenol solution is poured into the stone sulfur mixture solution, which can be used.

Note that the stone sulfur mixture solution must not be poured into the sodium pentachlorophenol solution, otherwise it is easy to produce something like bean flower, and the liquid medicine cannot be beaten.

Grape spring clearing technique.