Usually in the annual cycle of grape production, prevention is the main, comprehensive prevention is to ensure the grape yield, quality, income. In the process of prevention and control, key periods and key parts should be seized, and fungicides should be used scientifically and rationally. The following are specific prevention techniques:
1. The wave mixture is equivalent to or equal to 200-240 times of Bordeaux mixture plus 200-300 times of triethylphosphorus aluminum. It is used in the early and late stages of grape production to effectively prevent black pox and downy mildew. disease. When preparing, it is necessary to first mix the Bordeaux mixture, and then add triethylphosphorus aluminum. It is used first, and it should not be stored for a long time, otherwise it will be invalid.
2. The stone sulphur mixture sprays the branches with 5 waves of sulphur sulphur mixture before germination, which can effectively prevent and control various pests such as nymphs, snails, vines, etc., and lower the number of wintering pests. Grape black pox and powdery mildew have a good preventive effect. In addition, when the germination is 0.5-1.5cm, the pesticide manufacturer recommends spraying 0.5-1.5 Baume sulphur sulphur mixture, which can effectively prevent the diseased insects such as the overwintering eggs and the newly hatched nymphs.
3, the wave retreat agent is double the amount of Bordeaux mixture plus 50% of the antibacterial 600 times, the first requirement is to configure the Bordeaux mixture, then add 600 times of the antibacterial special, stir into gray black. The mixture is suitable for the single-spraying of the ear when the grape grows in the late rainy period, and can effectively prevent the grape anthracnose. After using the pesticide , the diseased part is crusted and the diffusion is stopped. The effect is very obvious. It is required to spray the ear and the ground.
4, Duofu mixture that is Fumei double plus carbendazim, can effectively prevent grape white rot, cob brown disease, prevent anthrax. The mixture begins to spray the ear at the size of the fruit bean, paying attention to the ear.
Immediately after 2-3 days, the leaves and ears should be completely closed with a double or equal amount of Bordeaux mixture. Repeat 15 days and repeat the previous method. In particular, this method has a very low incidence of white rot, generally less than one thousandth, and can be effectively controlled after the diseased ear is sprayed.
Tips for pesticide manufacturers should be strictly in accordance with the dosage during the use of pesticides to avoid damage caused by excessive use of pesticides.
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