It is currently the growth period of autumn crops, and it is also a key period for the prevention and control of pests and diseases. Due to the recent warm and humid temperature and sufficient food, it is very beneficial to the breeding of autumn insects. The current pests are common. The main species are beet armyworm, cotton bollworm, second-generation armyworm, etc. These pests mostly feed on the leaves of the crops. The main, causing nicks or holes, affecting photosynthesis of crops, and in severe cases, the plants can be eaten into polished rods, causing losses to production.
The field with early sowing and good growth occurred heavier. The pest species were mainly beet armyworm, cotton bollworm and second-generation armyworm. The age of the insects was mostly 2-3 years old. The leaves of serious field crops were eaten into nicks. Hole. Due to the current microclimate in the field, the pests and foods are sufficient, combined with short-term meteorological prediction analysis, it is very beneficial to the growth and reproduction of pests. At present, the autumn crop is in the seedling stage, and the resistance is weak. If it is not timely, the degree of crop damage will be more serious and the difficulty of prevention will increase as the age of insects and insects increase. Therefore, it is recommended that the masses attach great importance to it, pay close attention to prevention and control, reduce the density of insect populations, and ensure the normal growth of autumn grain crops.
Prevention and treatment method:
Use 25% diflubenzuron wettable powder per acre 20-30 grams or 25% chlorfenapyr suspension 30-40 ml or 20% Kangkuan (chloramphenicolamide) suspension 10 ml, or 3.2% A Cyanine microemulsion (carbazone 0.2% + cypermethrin 3%) 45 ml per mu or 5% emamectin benzoate 10 g, or 2.5% lambda-cyhalothrin 50 ml 40-50 kg of water is evenly sprayed, and the ground and the fields are sprayed. It can have a multi-spray effect on the insects in Akita.
The prevention and control time is controlled before 9:00 in the morning or after 5:00 pm to the evening. At this time, the larvae are harmful to the time, the control effect is good, and the high temperature can be avoided, which is beneficial to protect the safety of the applicator.
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