Five key points of winter tube for growing wheat

To do a good job in the field management of winter wheat, we should focus on the following measures:

First, it is necessary to strengthen the management of three types of seedlings. The three kinds of seedlings should seize the favorable opportunity of unfrozen before winter, give priority to management and promote root growth. It is necessary to hoe and loosen the soil in time to raise the ground temperature. For the late stubble wheat field with good soil moisture, winter water is generally not watered so as not to reduce the soil temperature; for the late stubble wheat with poor soil moisture, winter water should be irrigated in sunny days, and appropriate amount of chemical fertilizer can be applied if the bottom fertilizer is insufficient.

Second, it is necessary to pour the overwintering water in time. Watering winter water is conducive to solid soil, ensure wheat seedlings to survive the winter safely, help to store water in wheat fields, provide good soil moisture for early spring wheat to turn green and get up in the following year, and strive for the initiative in management. Therefore, where there are watering conditions, the overwintering water should be watered at the right time, and the Huang-Huai-Hai wheat area is the suitable time for watering winter water at the end of November and the beginning of December. For the land with insufficient bottom application of nitrogen and phosphorus fertilizer, or lack of seedlings, weak seedling potential, or lack of fertilizer, it is necessary to apply appropriate amount of nitrogen and phosphorus fertilizer combined with winter water.

Third, we should do a good job in the management of prosperous seedlings before overwintering. At present, the management of Wangmiao should be dominated by control. The first is repression. Stone stone or mechanical suppression can be used before freezing to control aboveground growth and excessive tillering. The number of suppressions depends on the situation of the seedlings. Generally speaking, the wheat fields with prosperous seedlings can be suppressed for 1 or 2 times. The second is to cut off the roots by deep hoeing. For excessively prosperous wheat fields, in addition to suppression, deep hoeing and root cutting can be carried out when the total number of stems per mu reaches more than 600000 before winter, with a depth of about 10 cm. After hoe, the soil should be leveled and compacted to prevent ventilation from freezing damage.

Fourth, it is necessary to cut a hoe at the right time to kill the grass and preserve soil moisture. Hoeing before winter can not only preserve and increase soil moisture, but also eliminate weeds. Therefore, when wheat is subjected to rain, winter irrigation or other causes of soil consolidation before winter, all kinds of wheat fields should be hoed in time to break the consolidation and promote the robust growth of roots and seedlings by preserving soil moisture.

Fifth, it is necessary to strengthen the prevention and control of diseases, pests and weeds. At present, it is necessary to do a good job in the prevention and control of diseases, pests and weeds, such as stripe rust, powdery mildew, sheath blight, aphids, underground pests and weeds. For wheat stripe rust, we should adhere to the strategy of "finding one point and controlling one piece" to minimize the source of overwintering bacteria. In Gansu, Sichuan and other places in the bacterial source areas, large-scale chemical control should be carried out to control bacterial sources and reduce pressure on other wheat areas; efficient and safe herbicides should be selected for chemical weeding to reduce weeds; poisonous soil or baits should be prepared to control underground pests to ensure that the whole seedlings pass the winter; to control sheath blight up to the standard fields to reduce the disease base in the middle and later stages.