Comprehensive prevention and control of diseases and insect pests in wheat ear

Wheat ear stage is the main period for the occurrence of various pests and diseases, and it is also a critical period for prevention and control. At this time, the types of diseases and insect pests were mainly leaf blight, rust, powdery mildew, and head blight. The types of insect pests mainly occurred in midge, armyworm, spleen, and wheat leaf bee. Prevention and control of diseases and insect pests at the ear of wheat should be based on chemical control. In accordance with the prevention and control indicators, pesticides on the road should be selected to minimize the frequency of application. Attention should also be paid to the protection and utilization of natural enemies in order to exert their control of pests, and efforts should be made to control the hazards of major pests and diseases. Below the allowable level of economic loss, ensure a bumper wheat harvest.

First, control indicators and prevention and control period

Wheat powdery mildew: the prevalence rate was up to 10%; leaf rust: diseased leaf rate was 5-10%; stem rust disease: diseased stalk rate was 1-5%; Fusarium head blight was sprayed during the initial flowering period of wheat.

Wheat midge: Hand pull Mai ridge, one can see 2-3 adults take off; Spike : Hundred head 500 lice; Armyworm: There are 3 larvae of 3 instars per square meter; Wheat leaf bee: per square Up to 60 heads of rice larvae.

Second, prevention and control measures

To control powdery mildew and rust in wheat, use 20% tetrafenin EC per mu, or 15% triadimefon 75g, spray 50-70kg water. Control of wheat scab, per acre with 40% carbendazim glue suspension 100 grams of water spray 60 kg. Wheat blight can be combined with the prevention and treatment of other diseases.

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