After the autumn delay, the tomato seedling stage is in the high temperature and dry season. Not only the virus disease is easy to occur, but also the climate is also beneficial to the reproduction and reproduction of various pests. The common ones are cockroaches, cockroaches, locusts, Liriomyza sativae, whitefly, aphids. , cotton bollworm, cabbage caterpillar, etc. Production should be strengthened in cultivation management, good disinfection and disease prevention, comprehensive management of pests and diseases, breeding of strong seedlings, and laying a good foundation for the capture of high yield.
First, the selection of disease-resistant varieties Currently more resistant varieties are hair powder 802, L-402.
Second, the high temperature stagnation shed before the crops are harvested, the residual leaves and surrounding weeds that are easy to breed viruses and mites are cleaned, and then sprayed 50% carbendazim powder 500 times +2.5 on the ground, walls and scaffolding. % Kungfu EC 1500 times +50% dichlorvos EC 800 times mixed solution, eliminate various pathogens and Liriomyza sativae, whitefly, aphids and other pests and their eggs, then choose sunny closed chamber for high temperature shack 2 days -3 Days, so that the temperature at noon reaches 50 ° C -60 ° C, using high temperature sterilization.
Third, seed disinfection and disease prevention After the autumn delay, the best sowing period of tomato should be selected from late June to early July, seed disinfection before sowing, for anti-viral disease, seeds first soaked in water for 4 hours -5 hours, then use 10% Soak the phosphoric acid trisodium solution for 20 minutes to 30 minutes, rinse off and rinse with water.
4. Seeding ditch The herbicide-proof tomato is often killed by cockroaches and bites after root emergence. Precautions can be taken in advance. When planting water in the planting ditch before planting, 50% phoxim emulsifiable concentrate 1000g/667 square is poured into the water. Rice, planted after the water has been infiltrated.
5. Covering the film with rain cover After the sowing, the film on the greenhouse and the greenhouse should not be removed. It should be covered with film to cover the rain, and it can play a shade function, reduce the temperature inside the shed and reduce the light intensity. After the emergence of the seedlings, keep the soil moist, so that the small waters are poured, don't dare to water the water because of the fear of being long, which will inevitably cause serious viral diseases. Pay attention to increase the amount of ventilation, and try to avoid high temperature, drought and strong light environment.
Sixth, spraying squats and anti-professionals The high temperature climate is easy to cause the seedlings to grow up, and the chance of being infected by various pests and diseases is correspondingly increased. Therefore, the seedlings start from 2 leaves and 1 heart, and spray 1000 times of chlormequat solution once every 7 days, which can effectively prevent the length of the body.
Seven, the use of pesticides to control pests and diseases can be sprayed with 1.5% phytotoxic water 1000 times solution or 20% virus A powder 500 times solution; 50 50% phoxim emulsifiable concentrate 1000 times solution; Stir fry or corn slag, add 50% dichlorvos emulsifiable concentrate 10 times to stir, make bait, use 2 kg -3 kg per 667 square meters, sprinkle in the field; control white powder sputum spray 10% sputum emulsifiable concentrate 1000 times liquid; Liriomyza sativae, aphids, cotton bollworms, cabbage caterpillars, etc., can spray 2.5% Kung Fu EC 2000 times solution, 20% fast killing milk 2000 times liquid, 20% anti-sweeping milk 3000 times liquid, 50% dichlorvos EC 1000 Double liquid prevention. It is found that insect pests should be prevented as early as possible. When various pests are mixed, several kinds of chemicals can be mixed and sprayed, so that the drugs can be used alternately to prevent the insecticides from becoming resistant and phytotoxic.
First, the selection of disease-resistant varieties Currently more resistant varieties are hair powder 802, L-402.
Second, the high temperature stagnation shed before the crops are harvested, the residual leaves and surrounding weeds that are easy to breed viruses and mites are cleaned, and then sprayed 50% carbendazim powder 500 times +2.5 on the ground, walls and scaffolding. % Kungfu EC 1500 times +50% dichlorvos EC 800 times mixed solution, eliminate various pathogens and Liriomyza sativae, whitefly, aphids and other pests and their eggs, then choose sunny closed chamber for high temperature shack 2 days -3 Days, so that the temperature at noon reaches 50 ° C -60 ° C, using high temperature sterilization.
Third, seed disinfection and disease prevention After the autumn delay, the best sowing period of tomato should be selected from late June to early July, seed disinfection before sowing, for anti-viral disease, seeds first soaked in water for 4 hours -5 hours, then use 10% Soak the phosphoric acid trisodium solution for 20 minutes to 30 minutes, rinse off and rinse with water.
4. Seeding ditch The herbicide-proof tomato is often killed by cockroaches and bites after root emergence. Precautions can be taken in advance. When planting water in the planting ditch before planting, 50% phoxim emulsifiable concentrate 1000g/667 square is poured into the water. Rice, planted after the water has been infiltrated.
5. Covering the film with rain cover After the sowing, the film on the greenhouse and the greenhouse should not be removed. It should be covered with film to cover the rain, and it can play a shade function, reduce the temperature inside the shed and reduce the light intensity. After the emergence of the seedlings, keep the soil moist, so that the small waters are poured, don't dare to water the water because of the fear of being long, which will inevitably cause serious viral diseases. Pay attention to increase the amount of ventilation, and try to avoid high temperature, drought and strong light environment.
Sixth, spraying squats and anti-professionals The high temperature climate is easy to cause the seedlings to grow up, and the chance of being infected by various pests and diseases is correspondingly increased. Therefore, the seedlings start from 2 leaves and 1 heart, and spray 1000 times of chlormequat solution once every 7 days, which can effectively prevent the length of the body.
Seven, the use of pesticides to control pests and diseases can be sprayed with 1.5% phytotoxic water 1000 times solution or 20% virus A powder 500 times solution; 50 50% phoxim emulsifiable concentrate 1000 times solution; Stir fry or corn slag, add 50% dichlorvos emulsifiable concentrate 10 times to stir, make bait, use 2 kg -3 kg per 667 square meters, sprinkle in the field; control white powder sputum spray 10% sputum emulsifiable concentrate 1000 times liquid; Liriomyza sativae, aphids, cotton bollworms, cabbage caterpillars, etc., can spray 2.5% Kung Fu EC 2000 times solution, 20% fast killing milk 2000 times liquid, 20% anti-sweeping milk 3000 times liquid, 50% dichlorvos EC 1000 Double liquid prevention. It is found that insect pests should be prevented as early as possible. When various pests are mixed, several kinds of chemicals can be mixed and sprayed, so that the drugs can be used alternately to prevent the insecticides from becoming resistant and phytotoxic.
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