Introduction to common diseases of wheat and their control methods

Wheat is a staple food that we can't do without. After making flour, it can be used not only to make steamed bread and bread, but also to make wine after fermentation. Wheat is rich in nutritional value, but also has a certain medicinal value and dietotherapy, do not underestimate it. Wheat is generally planted in the north, and it is easy to suffer from diseases and insect pests if it is not properly maintained. Next, let's take a look at the common diseases of wheat and the introduction of control methods.

1. Wheat scab

Wheat scab mostly occurs in the middle and lower reaches of the Yangtze River and Huang-Huai region. At ordinary times, it is necessary to stabilize the foundation of wheat and master the control techniques in the period of wheat heading and flowering. Generally, when there is a bud, we should start using drugs and try our best to take the initiative to prevent and control the epidemic diseases.

If it is a highly susceptible variety, always pay attention to the weather forecast, in the flowering period, if there is two days of cloudy and rainy weather, you need to use medicine in advance. The choice of medicament should be reasonable according to the growth of wheat, and should not exceed the dosage. Generally choose thiophanate, prochloraz, methyl thiophanate, tebuconazole, oxime ·tebuconazole, thiram, imiprazole, Bacillus subtilis and so on.

2. Wheat sheath blight and powdery mildew

The disease often occurs in the wheat turning green to jointing stage, if the incidence probability of sheath blight reaches 10%, it is necessary to choose appropriate agents for treatment. The commonly used agents are tebuconazole, thiofuramide, propiconazole, Jinggangmycin, diniconazole, polyantimycin, Jinggang wax germ, Trichoderma and so on.

If it is powdery mildew, the selected agents are triadimefon, nitrilol, diniconazole, propiconazole, tebuconazole, fluconazole, prochloraz, carbendazim and so on. For the fields with serious disease, it is necessary to spray once every half a month, and each spray should be uniform to achieve the effect of comprehensive control.

3. Wheat stripe rust

Is one of the common diseases of wheat, also known as jaundice, is a high transmission rate, fast transmission, very serious disease, the incidence is also relatively common. The prevention of the disease is mainly to take professional chemical seed dressing, select varieties with strong disease resistance, diversified planting, strengthen the monitoring of various environments, to achieve timely prevention operations, so as to avoid the disease spreading too fast and difficult to prevent.

The commonly used control agents are triadimefon, tebuconazole, diniconazole, fluconazole, hexazolol, tebuconazole, propiconazole, pyrazolyl carbendazim, promethazol, pyrimidine nucleoside antibiotics and so on.

4. Wheat aphids

Aphids are pests that do great harm to wheat, often appear on leaves and ears of wheat, and spread quickly if they are not controlled in time. Therefore, when the number of diseased plants invaded by aphids reaches 500, we should focus on prevention and control. The commonly used agents are imidacloprid, imidacloprid, acetamiprid, cyhalothrin, aldicarb, matrine, biphenythiazide, ear mold and so on.