Management points in winter wheat field
First, due to the appropriate conditions for seedlings, scientific management of fertilizer and water. For wheat fields with normal growth and high fertility level, joint fertilizer should be applied in combination with watering at jointing stage; for medium-fertility wheat fields, quick-acting fertilizer can be applied in combination with watering in the rising stage; for the three types of wheat with poor dry growth, On the basis of early spring slashing, topdressing should be carried out twice in the regreening stage and the jointing stage to promote the spring sorghum to become panicles, increase the rate of ear formation and promote the development of florets, increase the number of grains per ear; no fertilizer or fertilization for planting A small amount of late seedlings should be borrowed and topdressed when the soil is just frozen, but it is not suitable to pour back to the Qingshui, so as to avoid the decrease of ground temperature and poor soil permeability, which will affect the growth of wheat plants. On the basis of fine slashing, fertilizer and water promotion can be carried out in the early stage of wheat getting up, and it is better to apply about 10 kg of urea per acre. Watering should be carried out when the average temperature is stable at around 5 °C, so as to prevent freezing damage from premature watering.
The second is to carry out moderate tillage. For all kinds of wheat fields at all levels, it is necessary to carry out intermediate cultivation in the wheat before and after the greening period to eliminate the knots, eliminate the weeds, increase the temperature and protect the mites, and promote the early growth of the seedlings. Specifically, the weak seedlings should be shallow, break the knot, weaken and strengthen, and prevent the roots and the smashed seedlings; for the wheat fields that may grow, it should be properly squatted to inhibit the growth of the aboveground parts. Strong; for the extensive land preparation, sloping, especially the wheat field with rotary tillage and no hydration conditions, as well as the wheat field with prosperous trend, it is necessary to carry out repression at the right time, and master the pressure without drying, no freezing, no pressure The principle of saline land. In addition, the suppression should be combined with cultivating, it is best to press the sputum first, in order to achieve the effect of imagining the truth, improving the sputum and warming.
Third, for the hilly dryland wheat with no water pouring conditions, the spring management should be based on warming and warming. Generally, after the wheat field is frozen in early spring, it can be used to open the ditch and topdress. If there is a symptom of de-fertilization during the period of jointing to the jointing stage, the fertilizer should be applied in combination with the timely and timely rainfall; the dry fertilizer with higher seedling volume and higher soil fertility level before winter. Ground, you can pick up the fertilizer when you get up to the jointing season. Topdressing can be carried out by deep ditching or digging, in order to avoid loss of fat, and the land with insufficient phosphate fertilizer should be combined with nitrogen and phosphorus.
Fourth, when the temperature is stable at 10 °C ~ 15 °C, do a good job of prevention and control of disease, insects and grass damage in wheat fields; when selecting chemical agents for prevention and control, we must pay attention to selecting high-efficiency and low-toxic agents, and mastering the application amount and application. time.
The fifth is to actively carry out the anti-freezing plan for the spring wheat field. According to the weather forecast, the wheat field is irrigated in time to prevent freezing damage before the cold current. In the event of freezing damage, it is necessary to timely cultivate, combine watering to supplement the quick-acting nitrogen fertilizer, promote the new tillering into the ear, and minimize the damage caused by the freezing damage.
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