Grape bagging is easy to rot fruit. What is the reason for this?

Grape bagging is an important part of grape planting. But many growers report that grape bagging is easy to rot fruit. What is the reason for this? Below, the editor of Tuliu.com will take you to analyze.

First, the bagging time is not right.

Relatively speaking, it is better to bag grapes early, but not too early. Generally in the expansion period, bagging is late, some grapes have been infected with germs, spray is also difficult to kill germs. According to the experiment, when bagging during the expansion period, the rotten fruit rate of grapes was only 2.5%, while the rotten fruit rate of grapes planted late for 20 days was as high as 17.8%.

Second, the bagging method is not right.

Practice has proved that after spraying the grapes, we should pay close attention to the bagging after the solution is dry, and it is best to finish it on the same day. If it doesn't rain and there is no eel water at night, you can finish it in two days, but it's not as good as that day. Grape area is large, can be divided into pieces, according to the labor bagging speed to calculate the number of bags in one day, as much as you can. Avoid spraying without waiting for the liquid to dry immediately after bagging, because it is easy to cause rotten fruit. You must also pay attention to avoid touching the fruit with your hands when bagging, and be sure to tie the top of the bag tightly to prevent leakage into Rain Water.

III. Improper methods of administration

First, the medication time is wrong, not when the wind is blowing, it is best to do it at 7: 10 in the morning, so as to avoid dew and bright light, and is conducive to the end of the day. Second, the medication is uneven, do not spray too much, let alone leak spray, hedge grapes should be sprayed on both sides, scaffolding should also be sprayed on both sides of the ear. The third is the problem of drug selection, we should choose high-quality drugs, such as mancozeb, methyl thiophanate DuPont Fuxing and so on. In addition, the spray head of the sprayer should choose a fine spiral piece to facilitate the fine and uniform spraying.

IV. Quality of paper bags

Some informal manufacturers use inferior raw materials to produce paper bags, newspaper-made paper bags, and once-used paper bags, all of which will cause rotten fruit in the bags. Should buy standard qualified wood pulp paper bag, although expensive, but safety insurance.

Well, the above is the reason why the grape bagging rotten fruit brought by the editor of Tuliu.com. I hope it will be helpful to you. So that's all for today. I'll see you next time.