In order to ensure safe wintering of wheat seedlings, the Henan Provincial General Agricultural Technology Extension Station recently formulated the “Technical Opinions for Henan Province on Winter Wheat Management before 2017â€, and the comments pointed out that the beginning of winter has passed, and the province’s wheat has entered a critical period of pre-winter growth and management. The management of wheat should be based on promotion, promote root growth, promote weak growth, strengthen strong seedlings before winter, and keep the seedlings safe for winter.
Wheat winter tube should be classified and managed by seedlings. For late sowing of wheat and wheat, it is necessary to plough and plow, warm the soil, and keep seedlings to grow quickly. For wheat fields with poor fertility, inadequate base fertilizer application, and fertilizer-individual symptoms, we should combine 8 to 10 kg of urea per acre before watering in winter. The winter wheat field with sufficient base fertilizer, normal growth, and suitable soil moisture and soil moisture is generally no longer top-dressing and watering, and only cultivating and cultivating crops. For wheat fields with early sowing dates or large sowing rates and over-prosperous groups, timely rooting or repression should be carried out in deep cultivars, and control should be carried out vigorously. The depth of cultivator should be 7 to 10 cm.
Scientific irrigation in winter should be based on seedlings and soil moisture timely pouring of overwintering water, if the soil moisture is sufficient, do not pour over winter water; if the soil moisture is poor, timely winter irrigation. For late-seeding wheat fields, winter irrigation is generally not used, and in particular single-rooted seedlings are used to avoid watering.
Timely prevention and control of pests and weeds is an advantageous time for chemical and weed control in wheat fields before winter. The prevention and treatment time should be selected during the sunny days of the 3 to 5 leaf stage of wheat, the 2 to 4 leaf stage of weeds, and the daily average temperature of 5°C.
Scientific prevention of frost damage should pay close attention to weather changes everywhere, encounter severe cold weather, and water-freeze early. In late-seeding wheat fields, straw mulching, farmhouse manure and other measures can be taken to prevent freezing damage. Once the occurrence of frost damage, it is necessary to divide the seedling situation, divide the disaster situation, and take timely and effective countermeasures in the sub-region to minimize the losses.
In addition, for the south-eastern rice field or other low-lying wheat fields, the ditches should be cleared in time to prevent damage to the waterlogging.
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