Most of the wheat in the Northwest wheat area is in the wintering period, and the wheat seedlings and lyrics are generally better. Some of the fields were prosperous due to early rushing, and the dryness of some plots was raised. The wheat stripe rust was early and the base of the bacteria was large. Pay attention to the following four points in the management of dryland wheat:
耙耱ä¿å¢’, top Ling topdressing. For wheat fields with insufficient base fertilizer and weak seedlings and yellow seedlings, combined with topping or simmering after heavy rain, apply 4-5 kg ​​of urea to promote transformation and upgrading. For dryland wheat fields with large pre-winter groups and high soil fertility, it is not advisable to topdress during the regreening period, and it is advisable to topdress when it is up to the jointing stage.
Repress the town and raise the temperature. The repression of early spring wheat before and after regreening can promote the conservation of wheat roots and inhibit the growth of wheat. It is necessary to suppress before and after noon on a sunny day, and should not be carried out on a cold and wet morning to avoid folding the pseudo stem and damage the blade. It is necessary to use the seedlings because of the seedlings. It is better to plant the weak seedlings at night, to improve the soil temperature, to promote the weak seedlings, and to prevent the roots and the smashing.
Control pests and diseases, chemical weeding. Chemical weeding is carried out in time during the rejuvenation period. Vigorously promote the "accurate monitoring, with drug reconnaissance, find a point, control a piece" prevention and treatment experience.
Protect the film from the seedlings and prevent the indocyanine. It is necessary to press the soil in a timely manner to cover the fields that are not tightly covered. It is necessary to prevent the black and white of livestock and poultry in spring, affecting the photosynthetic area and dry matter accumulation of wheat, resulting in reduced production.
The wheat in the southwestern winter wheat area is in the late stage of jointing, and it will enter the booting stage. The wheat seedlings are generally better, the soil moisture is suitable, but the seedling imbalance in some areas is great.
The nitrogen fertilizer is moved backwards and the fertilizer is applied in time. It is necessary to promote the main fertilizer. When there is only one layer of shallow water left in the plain wheat area after watering, 5-8 kg of urea is applied per mu. In hilly areas without irrigation conditions, 5 kg of urea or a quick-acting fertilizer with a similar amount of pure nitrogen is applied to the ditch.
Early detection and early treatment, prevention and control of pests and diseases. From February to mid-March, it is a key period for the prevention and treatment of strip rust central disease groups. It is necessary to spray and control the spotted plots of the central disease group (sick plants) to prevent disease epidemics. Scab is mainly based on "prevention", focusing on prevention and control from heading to early flowering. It is necessary to formulate a multi-spray prevention measure focusing on the prevention and control of scab, and to mix the agents for preventing diseases such as scab, stripe rust, aphids, and one-time application, saving labor and saving, light and efficient.
Drain the damp and protect against waterlogging. Jointing to heading is a sensitive period for wheat to wet stains. The paddy field of rice paddy field is poorly matched, and the waterlogging damage is heavier. Before the spring rain, the side ditch, the ditch, the drainage ditch, the drainage and waterlogging should be opened to ensure the normal growth of wheat and grain filling.
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