Selection and use of vegetable pesticides
2024-10-26 02:01:46
1. Microbial pesticides and microbial pesticides can be used as far as possible to prevent and treat diseases, and not pollute the environment. It is also non-toxic to humans and animals, and is safe against natural enemies, and pests do not develop resistance. Commonly used are T216, Jinggangmycin, agricultural streptomycin, BT emulsion, and agricultural anti-120. Using BT emulsion 100-150g to 50kg of water, the spray can control pests such as Pieris rapae, Plutella xylostella, Spodoptera litura. Jinggangmycin 1000 times solution can prevent solanaceous bacterial wilt, rickets, chalk disease, anthracnose, downy mildew and the like. Nongkang 120 can control cucumber downy mildew. Irrigation with 200 PPM of streptomycin can control soft rot and bacterial wilt. It can also choose high-tech products such as Green Wind 95, special effects, yellow wilting, green leaf king, Xinfengbao, SR increasing production fulvic acid salt, and the disease prevention and control of vegetables is very ideal, and the price is reasonable, which is a good helper for vegetable farmers to get rich.
2. Actively promote soil pesticides such as 800-1000 times of urine washing agent (1 part urea, 0.2 parts washing powder, 100 parts water mixed), lime tobacco water (lime with a little water and soaked tobacco for 24 hours) For the control effect of aphids (radish, cabbage, celery and other aphids) of more than 85%; with 100 ~ 150g of hydrogen carbonate to increase water 13kg spray, can control cucumber downy mildew; spray 1.5% ~ 2% of the superphosphate solution can control the cotton bollworm and the tobacco budworm on the pepper; the body of the dead cabbage larvae is recovered and smashed and filtered with water, and the filtrate can be sprayed to control pests such as cabbage caterpillar and ground tiger.
3. Rational use of chemical pesticides (1) It is strictly forbidden to apply highly toxic, highly toxic and highly residual chemical pesticides on vegetables. Such as methamidophos, carbofuran, 1605, 1059, 3911, omethoate, insecticide, killing phosphorus and so on. (2) Symptomatic use of high-efficiency, low-toxic, low-residue and chemical pesticides with low lethality to natural enemies. Such as 18% insecticidal double water agent, 90% crystal trichlorfon, 40% dimethoate emulsifiable concentrate, 50% phoxim emulsifiable concentrate.
In addition, it is necessary to ensure a safe interval between medications, generally 15 days before the harvest of vegetables in summer and autumn, and 10 days before harvest in winter and spring. If the safety interval is neglected, it is very likely that a poisoning accident will occur.
Sichuan Lezhi Chaoyang Agricultural Broadcasting Station Liao Kejun
2. Actively promote soil pesticides such as 800-1000 times of urine washing agent (1 part urea, 0.2 parts washing powder, 100 parts water mixed), lime tobacco water (lime with a little water and soaked tobacco for 24 hours) For the control effect of aphids (radish, cabbage, celery and other aphids) of more than 85%; with 100 ~ 150g of hydrogen carbonate to increase water 13kg spray, can control cucumber downy mildew; spray 1.5% ~ 2% of the superphosphate solution can control the cotton bollworm and the tobacco budworm on the pepper; the body of the dead cabbage larvae is recovered and smashed and filtered with water, and the filtrate can be sprayed to control pests such as cabbage caterpillar and ground tiger.
3. Rational use of chemical pesticides (1) It is strictly forbidden to apply highly toxic, highly toxic and highly residual chemical pesticides on vegetables. Such as methamidophos, carbofuran, 1605, 1059, 3911, omethoate, insecticide, killing phosphorus and so on. (2) Symptomatic use of high-efficiency, low-toxic, low-residue and chemical pesticides with low lethality to natural enemies. Such as 18% insecticidal double water agent, 90% crystal trichlorfon, 40% dimethoate emulsifiable concentrate, 50% phoxim emulsifiable concentrate.
In addition, it is necessary to ensure a safe interval between medications, generally 15 days before the harvest of vegetables in summer and autumn, and 10 days before harvest in winter and spring. If the safety interval is neglected, it is very likely that a poisoning accident will occur.
Sichuan Lezhi Chaoyang Agricultural Broadcasting Station Liao Kejun
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