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First, wheat stripe rust: It is a large-scale airborne disease, which has been popular in recent years and caused great losses to wheat. Generally, it is introduced into the initial infestation source from November to December before winter, and it is infested on the autumn seedlings to form a disease-transmitting center. After the temperature rises in spring, it spreads rapidly under the influence of warm and humid air, causing a large-scale epidemic. To this end, in the prevention and control of wheat stripe rust, it is necessary to adopt a pre-winter monitoring and control center, and a strategy for controlling the epidemic in the spring epidemic. Before the winter, strengthen the field survey in Changfa District. Once the diseased or diseased leaves are found, immediately remove or control the surrounding area. After the spring temperature rises, according to the variety layout, pre-winter census and perennial epidemic geographical distribution, combined with the weather elements, a large area of ​​uniform chemical control is taken before the disease epidemic. Commonly used agents are: triazolone, propiconazole.
Second, wheat powdery mildew: In recent years, serious occurrence occurred in the wheat fields along the hills and along the river, and some susceptible varieties. Can be combined with wheat stripe rust for general survey, using triadimefon and other agents for prevention and treatment.
Third, wheat scab: It is a typical climatic ear-stage hazard-based disease. In the case of more than three consecutive warm rain days during the flowering period of wheat, scab will occur severely. Should be combined with the weather forecast, in the early stage of the flowering, grab the application. The agent may be carbendazim or thiophanate-methyl.
Fourth, wheat aphids, wheat spiders: is the two major pests on wheat. At the seedling stage, attention should be paid to the damage of wheat spiders in the dry land. After the temperature rises in spring, it is necessary to focus on the wheat aphid. In particular, the wheat aphid in the earing stage is fast-growing and has a large damage loss. There are many agents for controlling wheat bran and wheat spiders, but due to the enhanced resistance of wheat aphid and wheat spiders in recent years, attention should be paid to the selection and alternate use.
5. Sclerotinia sclerotiorum: Heavier in the wetland and flowering period. Pulling out the old yellow foot leaves is a cost-effective agricultural measure to prevent and cure the sclerotinia sclerotiorum. In the early flowering stage, sprays such as carbendazim or thiophanate-methyl can be used for chemical control.
Some other pests and diseases of wheat and rapeseed, such as wheat sheath blight, rape aphid, rape downy mildew, rape white rust, etc., can be based on the prevention and control of pests and diseases provided by the agricultural technology department, combined with the local major pests and diseases to take more diseases The strategy of concurrent treatment, economically and effectively carry out the prevention and control of small spring pests and diseases (source: pesticide network)
Key technology of pest control in Xiaochun crop
In recent years, due to the accumulation of pests and diseases, the species pattern has not changed fundamentally, and the climatic conditions are suitable, the occurrence of pests and diseases of wheat spring rape-based spring crops has increased year by year, which has brought serious threats to Xiaochun's grain and oil harvest. To this end, on the basis of doing a good job in crop variety layout, seed treatment, and improving field farming conditions, strengthen field monitoring of pests and diseases, control the spread of pests and diseases, and adopt large-scale uniform chemical control in key periods to reduce the damage of pests and diseases. Captured a good harvest of Xiaochun grain and oil.
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