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. The focus of this year's wheat pest control is two diseases, two diseases, namely sheath blight, rust and midge, and ear mites. At present, we should focus on the control of sheath blight, and use systemic agents such as triadimefon, jinggangmycin and heguoli to increase the amount of water and spray evenly. For the serious plots of wheat sucking worms last year, it is necessary to use the 3% Lin Dan powder or methyl iso-phosphorus granules 2~3 kg per mu to make toxic soil in the middle and late April. If it is applied, it should be properly watered if there is no rain after application. For wheat stripe rust, we must actively promote the successful experience of “accurate detection, drug detection, discovery, and control†to prevent large-scale outbreaks. For the field of weeds with severe weeds in the wheat field, we must pay attention to the chemical weeding in the wheat fields on the basis of cultivating and manual extraction. For the serious plots of weeds such as piglets, wild rapeseed, rice bran, and leeks, wheat grass can be used for prevention and control; for serious plots of wild oats, 6.9% of thrips can be used for control. The specific time is suitable when the temperature is stable at 10 ° C ~ 15 ° C, and should pay attention to the amount of application and application time. When talking about how to prevent the freezing damage of spring wheat fields, Professor Guo told the reporter that according to the large proportion of spring wheat varieties in our province and the high probability of “cold spring coldâ€, all localities should actively carry out the anti-freezing plan in the wheat field in spring. According to the weather forecast, the wheat field should be 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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