According to the investigation and monitoring of automatic insect detection lamps, the key areas of the three generations of sticky insects are the central and western regions of our province. The main crops are millet, corn and rice. The current age of the insects is 2 years old. The main features are: the occurrence of all the valleys in the valley, and the density is high; the corn field is mainly in the grassland, the greater the density of the insects, the lower the age of the insects, the majority of the insects are concentrated in the field weeds, has not spread to Harm on corn plants; rice occurs sporadically and has a low density.
In view of the fact that the larvae are found early and the insect age is still small, in order to solve the problem of insufficient number of high-beam sprayers, improve the prevention and control efficiency and control effect, and timely and effectively control the damage of the worms, the following prevention and control technical solutions are proposed:
1, millet whole field application early prevention and treatment. In the early stage, when most larvae are 2 years old, comprehensive spray control should be started to ensure the control effect and control the hazard in time.
2. Early artificial spray treatment in corn fields. When the larvae are still small and do not spread to the corn plants, the larvae on the weeds in the field are picked. Take the artificial carrying sprayer, focus on the weeds in the field, the nozzle should be below the waist, spray backwards and walk against the wind to ensure safety; no weeds between rows, can walk forward without spraying. If the larva has spread to the corn, stop using it immediately.
3. In the middle and late stages of the corn field, the operation of the high-stalk sprayer is unified. For large-scale land masses, when most of the age of the insects reaches 3-4 years old, high-stalk sprayer spray control is used, and top wind operation is required. In the core area where the key occurs, the aircraft spray operation can be planned early in the case of insufficient operation of the high-stalk sprayer.
Anti-control agent: It is recommended to use 4.5% beta-cypermethrin emulsifiable concentrate, spray 30-50 ml per mu, and use 100 ml of high-bar fog machine. It is necessary to avoid increasing the amount of drug used arbitrarily, and strictly prohibit the use of highly toxic pesticides for pest control. It is forbidden to use fumigating or volatile drugs such as organophosphorus and carbamate.
During the prevention and control process, it is especially important to pay attention to the safety of the spray operation and to make safety protection. When applying the medicine, avoid the noon time. It is advisable to spray the medicine before 9:00 am and after 4:00 pm. If it is raining within 4 hours after application, it should be sprayed once in time. Wear protective clothing when spraying, and wear a gas mask to avoid direct contact with the skin. The operation time of the application workers should not exceed half an hour, especially those who enter the corn field. In particular, if there is physical discomfort, it is necessary to take a break in time to prevent fatigue and prevent safety accidents. The application site should be notified in advance and the warning signs should be hoisted to avoid human and animal poisoning incidents.
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