Spring wheat field management technology
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The management of wheat fields in early spring is an effective measure to promote the transformation of wheat seedlings and strive to make more wheat into the ear and the big ear. Due to the low temperature and the effect of frost damage caused by wheat sowing, some wheat fields suffered from various degrees of frost damage. In particular, individual spring varieties suffered heavy damage. At present, wheat has returned to green and entered a period of rapid growth, which is an important period for strengthening management. All localities must attach great importance to it and act quickly to strengthen the management of frozen wheat fields. The upsurge of spring wheat field management focusing on cultivator, topdressing, and pest control should be promoted to promote transformation of the seedlings and strive for a good summer harvest. First, a reasonable top-dressing fertilizer should seize the favorable opportunity for the current soil moisture content. To freeze-damaged wheat fields, it is necessary to pick up fertilizer as early as possible, and mu recovery urea 7-10 kilograms. Grow. For the three types of wheat growing thin, in the green, jointing period, the second top dressing, each mu recovery 5-7 kg of urea. In general, the dry and fertile wheat fields in the drylands are topdressed once in the returning green period, and 7 to 10 kilograms of urea are recovered by Mu. High-yield fields are topdressing at the late jointing stage and promote grain growth. Urea can recover 7-12 kilograms of urea per mu. For those wheat fields that have not applied P and K fertilizers at the base fertilizer, they can make up for the available P and K fertilizers. Second, the cultivator weeding and cultivating is an important measure for the management of spring wheat, it has the effect of breaking the knot, warming the soil, promoting the early emergence of seedlings, and eliminating weeds. The city's wheat fields should be cultivated 1-2 times. Wet seedlings shall be implemented with shallow cultivator and deep cultivator shall be implemented for Wangmiao seedlings, and irrigated wheat shall be timely cultivated after being poured to break the consolidation. At the same time, we must diligently inspect the cover film wheat and find that the wind is uncovered and the film must be promptly covered so that it can really play its role of warming and warming. Third, timely watering to start hands early, use all water conservancy facilities, pouring good green, jointing, booting water. Any type II and III wheat fields that have not been used for winter irrigation and wheat fields with severe frost damage should be poured back to Qingshui; high-yielding fields that have been growing well and have been fed in the winter can be postponed to the late jointing stage, such as the lack of soil in the booting and filling stages, and should be poured well. Spike water, grouting water. When watering, it is necessary to prevent flooding of large floods, especially in late-seeding weak seedlings. It is imperative to pour water under shallow water to prevent siltation. Always pay attention to the changes in the weather and pay close attention to watering and freezing before the advent of the cold current. Fourth, pest control Spring is a key period for the prevention and control of wheat pests and diseases. All localities must pay close attention to the occurrence of pests and diseases, strengthen forecasting, prepare medical equipment, and organize prevention and control in a timely manner. In the current part of wheat fields, spider mites, aphids, sheath blight, and powdery mildew have occurred. The disease status and insect conditions should be checked as soon as possible, and the pests should be eliminated at the stage of spotting. In early March, it is a suitable period for the control of sheath blight. For a wheat field with a diseased plant rate of more than 15%, it should be controlled with 12.5% ​​wolfberry fruit or 15% triadimefon. In late March, 40% of Le Siben, 4.5% of beta-cypermethrin, and 15% of triadimefon were used to control spider mites, aphids, and powdery mildew. At the end of April, the locust migration peaks at a peak value, which can be controlled with 10% once-over net (imidacloprid).