After the fall, the tomato seedlings in greenhouses are in a hot and dry season. Not only is the virus disease prone to occur, but the climate is also conducive to the reproduction and reproduction of various pests. The common ones are cockroaches, cockroaches, locusts, Liriomyza sativae, whitefly, and aphids. , cotton bollworm, cabbage caterpillar and so on. Production should be strengthened with cultivation and management, good disinfection and disease prevention, comprehensive management of diseases and insect pests, and breeding strong seedlings to lay a good foundation for seizing high yields.
First, the selection of disease-resistant varieties is currently more resistant varieties of hair powder 802, L-402.
Second, high-temperature stuffy shed before sterilization Stewed crops will be harvested after the stubble leaves and the surrounding easy to breed virus, aphid weeds clean, and then spray on the ground, walls, scaffolding 50% carbendazim powder 500 times +2.5 % Kung Fu EC 1500 times +50% Dichlorvos EC 800x mixed solution to destroy various pathogens and pests such as Liriomyza sativae, Whitefly, Aphids, etc., and their eggs, then selected sunny closed enclosure for high temperature dwellings for 2 days-3 Day, so that the temperature reached 50 °C -60 °C at noon, the use of high temperature sterilization.
Third, the seed disinfection and disease prevention after the fall of the best sowing time of the tomato should be selected in late June to early July, seed disinfection before sowing, for anti-virus disease, the seeds first soaked with water 4 hours -5 hours, then use 10% The trisodium phosphate solution was soaked for 20 minutes to 30 minutes. Remove and rinse thoroughly with clean water.
IV. Seedlings in the sowing ditch Insecticide Tomatoes are often killed by fleas and bite-cut roots after emergence, and can be prevented in advance. Before sowing in the sowing ditch before sowing, 50% phoxim EC may be added to 1000 g/667 sq. Rice, sow after soaking.
5. The film covering the rain and covering the film on the greenhouse and greenhouse after sowing shall not be removed, and the film shall be covered with rain and may play a role in shading, reduce the temperature in the shed, and weaken the light intensity. After the emergence of the soil to keep the soil moist, so that a small amount of ground water, do not dare to water because of fear of long, it is bound to cause serious viral disease. Pay attention to increase ventilation and try to avoid high temperature, drought, and strong light conditions.
6. The spraying of chlormequat on the high temperature climate can easily cause the leggy growers, which increases the chance of infestation by various pests and diseases. Therefore, the seedlings start from the heart of 2 leaves and spray 1000 times of chlormequat solution every 7 days, which can effectively prevent leggy.
VII. Control of insecticides and viruses for the prevention and control of diseases and diseases Viruses can be sprayed with 1.5% of the plant disease Lingshui agent 1000 times or 20% of the virus A powder 500 times; and the pot with 50% phoxim EC 1000 times to irrigate the roots; Bran or corn residue saute, add 50% dichlorvos EC 10 times liquid mixing, made of bait, 2 kg -3 kg per 667 square meters, sprinkled in the field; control whiteflies spray 10% Buprofen EC 1000 times; Liriomyza sativae, aphids, cotton bollworm, cabbage caterpillar, etc., can be sprayed with 2.5% kungfu emulsifiable concentrate 2000 times, 20% extinction diclofenac 2000 times, 20% extinction emulsifiable concentrate 3000 times, 50% dichlorvos 1000 Double liquid prevention. It was found that insect pests should be prevented and treated as soon as possible, and when mixed with various pests, several agents could be mixed and sprayed so as to alternately use drugs to prevent pests from developing drug resistance and phytotoxicity.
First, the selection of disease-resistant varieties is currently more resistant varieties of hair powder 802, L-402.
Second, high-temperature stuffy shed before sterilization Stewed crops will be harvested after the stubble leaves and the surrounding easy to breed virus, aphid weeds clean, and then spray on the ground, walls, scaffolding 50% carbendazim powder 500 times +2.5 % Kung Fu EC 1500 times +50% Dichlorvos EC 800x mixed solution to destroy various pathogens and pests such as Liriomyza sativae, Whitefly, Aphids, etc., and their eggs, then selected sunny closed enclosure for high temperature dwellings for 2 days-3 Day, so that the temperature reached 50 °C -60 °C at noon, the use of high temperature sterilization.
Third, the seed disinfection and disease prevention after the fall of the best sowing time of the tomato should be selected in late June to early July, seed disinfection before sowing, for anti-virus disease, the seeds first soaked with water 4 hours -5 hours, then use 10% The trisodium phosphate solution was soaked for 20 minutes to 30 minutes. Remove and rinse thoroughly with clean water.
IV. Seedlings in the sowing ditch Insecticide Tomatoes are often killed by fleas and bite-cut roots after emergence, and can be prevented in advance. Before sowing in the sowing ditch before sowing, 50% phoxim EC may be added to 1000 g/667 sq. Rice, sow after soaking.
5. The film covering the rain and covering the film on the greenhouse and greenhouse after sowing shall not be removed, and the film shall be covered with rain and may play a role in shading, reduce the temperature in the shed, and weaken the light intensity. After the emergence of the soil to keep the soil moist, so that a small amount of ground water, do not dare to water because of fear of long, it is bound to cause serious viral disease. Pay attention to increase ventilation and try to avoid high temperature, drought, and strong light conditions.
6. The spraying of chlormequat on the high temperature climate can easily cause the leggy growers, which increases the chance of infestation by various pests and diseases. Therefore, the seedlings start from the heart of 2 leaves and spray 1000 times of chlormequat solution every 7 days, which can effectively prevent leggy.
VII. Control of insecticides and viruses for the prevention and control of diseases and diseases Viruses can be sprayed with 1.5% of the plant disease Lingshui agent 1000 times or 20% of the virus A powder 500 times; and the pot with 50% phoxim EC 1000 times to irrigate the roots; Bran or corn residue saute, add 50% dichlorvos EC 10 times liquid mixing, made of bait, 2 kg -3 kg per 667 square meters, sprinkled in the field; control whiteflies spray 10% Buprofen EC 1000 times; Liriomyza sativae, aphids, cotton bollworm, cabbage caterpillar, etc., can be sprayed with 2.5% kungfu emulsifiable concentrate 2000 times, 20% extinction diclofenac 2000 times, 20% extinction emulsifiable concentrate 3000 times, 50% dichlorvos 1000 Double liquid prevention. It was found that insect pests should be prevented and treated as soon as possible, and when mixed with various pests, several agents could be mixed and sprayed so as to alternately use drugs to prevent pests from developing drug resistance and phytotoxicity.
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