Wheat booting stage - flowering stage, due to early spring in early spring, the wheat growth process is also relatively early. On the basis of strengthening the control of wheat jointing and reforestation, all wheat areas should pay attention to the disease of wheat booting stage and flowering stage. Insect prevention, the initiative to fight for prevention. The main control targets in Huanghuai and northern winter wheat areas are aphids, midges, scab, powdery mildew, red spider mites and stripe rust.
When a variety of pests and diseases are mixed, the "one spray three defenses" technology is implemented. When a single pest occurs in the field, targeted control is carried out. The wheat heading to the flowering stage in the southern wheat area of ​​Huanghuai County should emphasize the prevention of scab. In the case of rainy, dew and foggy weather and lasting more than 3 days or more than 5 days of rainy weather in 10 days, comprehensive prevention of scab should be carried out, and cymene, tebuconazole, prochloraz, etc. Fungicides such as carbendazim and thiophanate-methyl.
The main control targets in the winter wheat area of ​​the middle and lower reaches of the Yangtze River are wheat scab, powdery mildew and aphids, taking into account stripe rust and leaf rust. For wheat scab, it is necessary to strengthen cultivation management, balance fertilization, control the wheat population in the middle and late stages, and make the field ditches smooth.
In the period from wheat heading to flowering stage, there is rainy, dew and foggy weather for more than 2 days. It should be actively sprayed in the early stage from wheat heading to flowering, so as to prevent and control one piece of flowering; for high-sensitivity varieties, the first time of application Can be appropriate in advance.
The medicinal variety may be selected from cymene, prochloraz, carbendazim or the corresponding compounding agent. If it is rained within 3 to 6 hours after application, it should be timely replenished. In areas where carbendazim produces high levels of resistance, it should be controlled by cymene and tebuconazole.
The main control objects in the northwest wheat area are stripe rust, powdery mildew, scab, aphids, and midges. Due to the occurrence of multiple pests and diseases in the area all year round, the "one spray three prevention" measures should be implemented in combination with the types of pests and diseases.
When a single pest occurs in the field, targeted control is carried out. In the southern part of the northwestern wheat area, the prevention of scab should be strengthened. In the case of rainy, dew and foggy weather from wheat heading to flowering, and it lasts for more than 2 days, cyanide and tebuconazole can be used for the prevention of scab.
In the booting stage of wheat, it is necessary to strengthen the control of wheat midge. It can be made into toxic soil by chlorpyrifos, and it can be controlled in flood season. At the heading stage of wheat, organic phosphorus, pyrethroid and other pesticides can be used for prevention and control in adult stage.
The main control targets in the southwestern wheat area are stripe rust, powdery mildew, scab, aphids, and red spiders. When the mixing of pests and diseases in the field occurs, the “one spray three prevention†measures shall be implemented, and the corresponding fungicides, insecticides, plant growth regulators or foliar fertilizers shall be selected and mixed reasonably. When a single pest occurs in the field, targeted control is carried out.
This article URL: 2015 national winter wheat booting stage and flowering period pest control opinions
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