What should I do with the heartworm? Heartworm agriculture, chemical control measures
What should I do with the heartworm? Drillworm is one of the common diseases in bean planting, and it is also a disease that is difficult to control, because the adult worms are not only scattered and concealed, but also have a lot of spawning. Therefore, if you want to successfully control, you have to work hard. Let's talk about the prevention and control skills of the bean heartworm for your reference.
ã€Biological control is based on bacteria control, chemical control and bud treatment】
First, pay attention to agricultural prevention
1. Deeply plowing the soil, the larvae in the soil can be turned out of the ground to reduce the overwintering insect source.
2, in the spring and winter, to ensure soil moisture, can effectively eliminate the scarred larvae into the soil.
3. Clear the leaves and sick leaves in the field in time, and take them out of the field and burn them in a concentrated way. It can eliminate the larvae located in the flower buds of the leaves and reduce the pests.
Second, strengthen cultivation management
1. Planting management: Ensure that the beans are consistent in emergence, and the growth is not much different. At the same time, the flowering and pod-forming period should be concentrated, etc., and the young girl can be concentrated.
2, fertilizer and water management: one-time application of the attack and attack on the pod fertilizer, timely removal of the scattered flower buds appearing early or too late.
Third, biological control
1. Biological control is mainly to control insects by bacteria. It can be mixed with dichlorvos per gram of green fungus containing 10 billion live spores or Acariciid or Bt emulsion, which can effectively prevent and cure the heartworm.
2. Use 300 times of liquid bacteria containing 10 billion live spores to control the heartworm. It should be noted that Beauveria bassiana should be sprayed within two hours after the liquid mixture.
3, the best control period of the bean heartworm is sprayed at the 2nd instar larvae, sprayed once every other week, continuous spraying several times can have obvious control effect.
Fourth, chemical prevention
1. Chemical spraying is mainly based on the treatment of buds. It is best to spray at the flowering stage of the beans. The spraying time should be 8-10 points on a sunny day.
2, after the flower thank you, when the pod grows to more than 10cm, you can spray the agent (the medicinal agent for the bean flower and the young pod) once or twice, so as to eliminate the young larvae that hatch the larvae and into the young pods. The medicine can be selected from Kungfu 1500 times liquid, or 21% synergistic cyanoma emulsifiable concentrate 5000 times liquid, or 2.5% enemy killing 3000 times liquid, or 20% killing pyrethroid 4000 times liquid, or 30% fast killing 1500 times liquid. , or 60% of the enemy horse milk 1000 times liquid, etc., exchange use, spray once every other week, continuous spraying two or three times, need to pay attention to stop the drug within 10-15 days of the bean harvest.
3, in the adult season, the use of 90% crystal dichlorvos 150 grams of soil mixed with 25 kilograms per acre, can smoke adult insects, if conditions permit, you can use the phototaxis weakness of adults, black light to trap adult.
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