First, the impact of high temperature on vegetables
In July, Wenzhou and other Zhejiang regions experienced high temperatures of 36-37°C for more than 20 days in a row, and there was little rain, which was extremely unfavorable to the production of summer vegetables. High temperature and drought affect the results and scarring of loofah and cowpea, and the fruit drop is very serious. It also affects the sowing, emergence and growth of cabbage vegetables, which makes the growth of Chinese cabbage slow, easy and aging. In addition, it also aggravated the hazards of hi-heat pests, whiteflies and Spodoptera litura. August is also the annual high temperature season in southern Zhejiang, with the maximum temperature reaching 35~36°C. It is predicted that there will be a typhoon formation and occurrence in southern Zhejiang in August. According to a survey conducted in the vegetable garden in Xinqiao, Wenzhou City at the end of July, shed vegetables in the spring and summer season: tomatoes, eggplants, cucumbers, etc. have ended. Occurrence of insect pests such as Bemisia tabaci, Spodoptera litura, etc., At present, the management of summer vegetable sowing and the prevention and control of major pests should be done well.
Second, the current vegetable farming
1, in the morning and evening, insist on watering, keep the vegetable fields moist, prevent drought and affect the production of summer vegetables.
2, to grasp the sowing of summer vegetables, at present, can still continue to plant early maturing No. 5, Corolla green stems white, small leaf blue, dwarf yellow white, cabbage leaves, edible fungus, summer cabbage and autumn beans, mountain can be grown in the autumn cucumber, four seasons Beans and so on. For the sown leafy vegetables, shade nets can be covered to prevent high temperature from prolonged sun exposure and heavy rain, which will help preserve and emerge seedlings.
3, bored shed leisure for 10 to 15 days, control of soil-borne diseases, reduce the harm of jaw disease. After the sheds are harvested, one season of late rice can be planted for the crop rotation.
4, empty fields weeds, can be sprayed glyphosate, paraquat and other herbicides, resulting in weeds yellow, piled them up, burning coke ash, as organic fertilizer, used for vegetable nursery.
Third, strengthen the control of insect pests such as Bemisia tabaci and Spodoptera litura
1. Control of Bemisia tabaci According to the end of July, a survey was conducted in the food district of Xinqiao Town, Wenzhou City: Bemisia tabaci occurred in large numbers. Each loofah had more than a thousand of Bemisia tabaci. Each leaf had hundreds of heads, shaking the vegetables slightly. Strain, thousands of heads of whiteflies rushed to face, making it difficult to open their eyes, which endanger a lot of vegetables: cauliflower, beans, melons, water spinach, etc. are harmed by the pests, prevention and control is difficult. It is recommended that experts in agriculture, vegetable administrative departments and research institutes convene a coordination meeting for the control of tobacco whitefly, and formulate effective measures for the control of whitefly. Here, it is recommended to use 20% lancin (acetamiprid) 2000 times liquid plus Lu Ying 300 times liquid and other agents in the morning dew when a unified large area control.
2. Prevention and control of Spodoptera litura According to investigations on unconventional water spinach and cowpeas in Zhongcun, Xinqiao Town, on July 26th, Spodoptera litura had a large number of insect pests, and the number of insects was 10 to 15 per shellworm. There are dozens of larvae per bean leaf, which greatly exceeds the control index. At present, the 3rd and 4th generations of Spodoptera litura are diverse: there are egg masses, young 2-3 instar larvae and 5-6 years old larvae and adults. The hazards are very widespread: cowpea, water spinach, cauliflower, Chinese cabbage, large Cabbage, etc., must strengthen the comprehensive prevention and control.
(1) Light trapping and killing adults;
(2) Introduction, promotion, and application of attractants;
(3) Select and use Ozone No. 1, Moth, Anderson, Sanling, Leitong (Happy), and Jingbaoer (Acetone) as sprays to control and eradicate young larvae.
3. Prevention and treatment of diseases and insect pests of cruciferous vegetables At present, the cabbage, cauliflower and Chinese cabbage sown and grown are mainly pests and diseases such as damping-down, soft rot, diamondback moth and Spodoptera litura. Field investigations should be conducted to understand the pest situation. Disease conditions, the use of comprehensive prevention and control, timely use of spraying, high efficiency, low toxicity, safe agents, control and eliminate pests and diseases to ensure the safe production of summer vegetables.
4. Diseases and Insect Pests of Kidney Bean According to the survey conducted in early August in the Bean Field in Xinqiao Nakamura, there were mainly damages of legume moth, Spodoptera litura, Bemisia tabaci, Liriomyza sativae, and mycoplasma. The bean sprouts can be sprayed with 15% solution 4000 times solution (secondary dosing and washing kits) plus 1500 times solution of Haizheng Exterminator and sprayed at 7:00~8:00 am. And clean the insects that fell on the ground. Spodoptera litura can be sprayed and treated with 1500 times liquid medicine. Prevention of Bemisia tabaci can be sprayed with Hisense Pixi 3 (Improved imidacloprid) 1500 times plus Lu Ying 300 times. The control of leaf miner can spray 50% of the dive 5000 times liquid. Control of mycotic disease can remove the middle and lower disease and old leaves of the plants, and spray 50% carbendazim WP 600 times.
5, spraying foliar fertilizer: high temperature and little rain weather, sowing cabbage vegetables, seedlings can be sprayed green agrochemicals, potassium dihydrogen phosphate, "cloud 120" and other foliar fertilizer to promote plant growth. The high temperature and little rain weather can easily cause the kidney beans to fall and fall, and can be sprayed with Green Fenway No. 1 or No. 3 500 times liquid or loved to receive 3000~4000 times liquid, which has the function of keeping flowers and keeping flowers.
In July, Wenzhou and other Zhejiang regions experienced high temperatures of 36-37°C for more than 20 days in a row, and there was little rain, which was extremely unfavorable to the production of summer vegetables. High temperature and drought affect the results and scarring of loofah and cowpea, and the fruit drop is very serious. It also affects the sowing, emergence and growth of cabbage vegetables, which makes the growth of Chinese cabbage slow, easy and aging. In addition, it also aggravated the hazards of hi-heat pests, whiteflies and Spodoptera litura. August is also the annual high temperature season in southern Zhejiang, with the maximum temperature reaching 35~36°C. It is predicted that there will be a typhoon formation and occurrence in southern Zhejiang in August. According to a survey conducted in the vegetable garden in Xinqiao, Wenzhou City at the end of July, shed vegetables in the spring and summer season: tomatoes, eggplants, cucumbers, etc. have ended. Occurrence of insect pests such as Bemisia tabaci, Spodoptera litura, etc., At present, the management of summer vegetable sowing and the prevention and control of major pests should be done well.
Second, the current vegetable farming
1, in the morning and evening, insist on watering, keep the vegetable fields moist, prevent drought and affect the production of summer vegetables.
2, to grasp the sowing of summer vegetables, at present, can still continue to plant early maturing No. 5, Corolla green stems white, small leaf blue, dwarf yellow white, cabbage leaves, edible fungus, summer cabbage and autumn beans, mountain can be grown in the autumn cucumber, four seasons Beans and so on. For the sown leafy vegetables, shade nets can be covered to prevent high temperature from prolonged sun exposure and heavy rain, which will help preserve and emerge seedlings.
3, bored shed leisure for 10 to 15 days, control of soil-borne diseases, reduce the harm of jaw disease. After the sheds are harvested, one season of late rice can be planted for the crop rotation.
4, empty fields weeds, can be sprayed glyphosate, paraquat and other herbicides, resulting in weeds yellow, piled them up, burning coke ash, as organic fertilizer, used for vegetable nursery.
Third, strengthen the control of insect pests such as Bemisia tabaci and Spodoptera litura
1. Control of Bemisia tabaci According to the end of July, a survey was conducted in the food district of Xinqiao Town, Wenzhou City: Bemisia tabaci occurred in large numbers. Each loofah had more than a thousand of Bemisia tabaci. Each leaf had hundreds of heads, shaking the vegetables slightly. Strain, thousands of heads of whiteflies rushed to face, making it difficult to open their eyes, which endanger a lot of vegetables: cauliflower, beans, melons, water spinach, etc. are harmed by the pests, prevention and control is difficult. It is recommended that experts in agriculture, vegetable administrative departments and research institutes convene a coordination meeting for the control of tobacco whitefly, and formulate effective measures for the control of whitefly. Here, it is recommended to use 20% lancin (acetamiprid) 2000 times liquid plus Lu Ying 300 times liquid and other agents in the morning dew when a unified large area control.
2. Prevention and control of Spodoptera litura According to investigations on unconventional water spinach and cowpeas in Zhongcun, Xinqiao Town, on July 26th, Spodoptera litura had a large number of insect pests, and the number of insects was 10 to 15 per shellworm. There are dozens of larvae per bean leaf, which greatly exceeds the control index. At present, the 3rd and 4th generations of Spodoptera litura are diverse: there are egg masses, young 2-3 instar larvae and 5-6 years old larvae and adults. The hazards are very widespread: cowpea, water spinach, cauliflower, Chinese cabbage, large Cabbage, etc., must strengthen the comprehensive prevention and control.
(1) Light trapping and killing adults;
(2) Introduction, promotion, and application of attractants;
(3) Select and use Ozone No. 1, Moth, Anderson, Sanling, Leitong (Happy), and Jingbaoer (Acetone) as sprays to control and eradicate young larvae.
3. Prevention and treatment of diseases and insect pests of cruciferous vegetables At present, the cabbage, cauliflower and Chinese cabbage sown and grown are mainly pests and diseases such as damping-down, soft rot, diamondback moth and Spodoptera litura. Field investigations should be conducted to understand the pest situation. Disease conditions, the use of comprehensive prevention and control, timely use of spraying, high efficiency, low toxicity, safe agents, control and eliminate pests and diseases to ensure the safe production of summer vegetables.
4. Diseases and Insect Pests of Kidney Bean According to the survey conducted in early August in the Bean Field in Xinqiao Nakamura, there were mainly damages of legume moth, Spodoptera litura, Bemisia tabaci, Liriomyza sativae, and mycoplasma. The bean sprouts can be sprayed with 15% solution 4000 times solution (secondary dosing and washing kits) plus 1500 times solution of Haizheng Exterminator and sprayed at 7:00~8:00 am. And clean the insects that fell on the ground. Spodoptera litura can be sprayed and treated with 1500 times liquid medicine. Prevention of Bemisia tabaci can be sprayed with Hisense Pixi 3 (Improved imidacloprid) 1500 times plus Lu Ying 300 times. The control of leaf miner can spray 50% of the dive 5000 times liquid. Control of mycotic disease can remove the middle and lower disease and old leaves of the plants, and spray 50% carbendazim WP 600 times.
5, spraying foliar fertilizer: high temperature and little rain weather, sowing cabbage vegetables, seedlings can be sprayed green agrochemicals, potassium dihydrogen phosphate, "cloud 120" and other foliar fertilizer to promote plant growth. The high temperature and little rain weather can easily cause the kidney beans to fall and fall, and can be sprayed with Green Fenway No. 1 or No. 3 500 times liquid or loved to receive 3000~4000 times liquid, which has the function of keeping flowers and keeping flowers.
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