The disinfection of grape seedlings (including seedlings and seedlings) is an important measure to prevent the traditional broadcasting of pests and diseases. Autumn and winter are important seasons for the sale and purchase of grape seedlings. Therefore, it is a problem that grape planting enterprises and farmers must attach great importance to the disinfection of good grape seedlings. The disinfection treatment method is now introduced as follows:
I. Disinfection and treatment methods for pests
1. The drug is in use. Use 50% phoxim 800-1000 times solution, or use 80% dichlorvos 600-800 times solution, soak the branches or seedlings, soak for 15 minutes. Soaked and dried, then packaged for transport or planted immediately.
2, using fumigation treatment. Fumigation with methyl bromide, placing the seedlings in a closed room, fumigation at 20-30 ° C for 3-5 hours, the amount of methyl bromide is about 30 grams / cubic meter, the dosage can be appropriately increased under low temperature conditions, the temperature is high The dosage is appropriately reduced under the conditions. When fumigation, it can be blown with a fan to promote air flow and improve the fumigation effect. When fumigation, prevent seedlings from dehydrating.
Second, comprehensive disinfection treatment methods for pests and diseases
Firstly, soak the seedlings in warm water of 43-45 degrees Celsius for 2 hours, then remove the mixture solution of copper sulfate and dichlorvos for 15 minutes, soak them, and then transport them out to dry and package for transportation or planting. Preparation method of the mixed solution of copper sulfate and dichlorvos: 1 kg of copper sulfate and 150% of dichlorvos 150 ml per 100 kg of water are mixed and stirred uniformly.
Third, the timing of disinfection treatment
The disinfection treatment of grape seedlings must be disinfected before the seedlings are transported. When planting, it is best to do another disinfection.
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