At present, the beginning of the "spring", winter wheat is in the winter period, is about to enter the green period. In the past winter, the temperature in winter continued to be high, and wheat fields showed a tendency of prosperous growth. At the same time, the precipitation in winter was less and less dry, which was unfavorable to the turning of wheat. The wheat rust had a large number of bacteria in the core over summer area, and it was likely to be biased. To address the growing trend of wheat this year, we propose the following management techniques:
First, water and seedlings, drought and freeze. For drought-fed wheat fields, early spring soil thawing, promptly supplement irrigation, drought protection seedlings, timely scratching after watering, break the consolidation, further improve soil moisture, prevent or reduce the threat of freezing damage.
Second, repression and deterrence, mentioning protection. The combination of repression and squeezing is carried out, and the squeezing of the sorghum is first performed to promote the release of Panasonic on the soil and increase the temperature of the saggers. For the wheat fields with coarse soil preparation in the fall season, å· å¤š 多 多 多 多 多 å’Œ å’Œ 没有 没有 没有 没有 没有 没有 没有 没有 没有 没有 没有 没有 , , 麦田 麦田 麦田 麦田 麦田 。 。 。 。 。 。 。 。 。 。 。 。. The repression of Wang Miao after the return of spring wheat to early spring is also an effective measure to control the growth of Wang Miao.
Third, to promote the combination of control, fertilizer and water operations. For irrigated wheat fields, the three types of seedlings are mainly promoted. The spring topdressing is carried out in two stages. The first time in the return period of 5 cm above the ground temperature, the temperature is stable above 5°C, the topdressing fertilizer is applied to water, the mu application of urea is 8-10 kg and the appropriate amount of diammonium phosphate; the second time in the jointing stage, the mu application of urea is carried out. 5-7 kilograms, improve the rate of spike formation, promote the development of floret, increase the number of grains per spike; for the late-seeding weak seedlings and wheat fields with normal leaf color and growth, it is necessary to control early spring watering so as not to reduce ground temperature and soil permeability and affect the growth of wheat seedlings. The second type of seedlings promotes control and integration. The general level of soil fertility is 200,000-700,000 Class II wheat fields with 200,000 acres of stalks. In the early stages of wheat development, combined with watering acres, 10-15 kilograms of urea are recovered; the second highest level of soil fertility is 700,000-800,000 acres of wheat. In the middle of the wheat rise, top dressing watered. One type of seedling control promotes binding. Spray Zhuang Fengan and other regulators during the start-up period, shorten the internodes of the base, control the prosperous growth of the plants, and prevent lodging at the late stage of growth. During the jointing stage, topdressing watering, mu recovery urea 13-15 kg. Wang Changmiao to control the main. For the phenomenon without de-fertilization, the seedlings should be repressed early in the spring to avoid excessive spring tiller. In the jointing stage, combined with watering mu, topdressing urea 10-15 kilograms; for the phenomenon of de-fertilization, combined with watering Mu topdressing in the period of getting up. Urea 10-15 kg.
Fourth, prevent and control pests, chemical weeding. Do a good job in the prevention of pests and diseases such as sheath blight, full-blind disease, wheat spiders, and midge pests, scientific selection of medicines, safe use of medicines, early prevention and early treatment, and unified prevention and control. For wheat fields that have not been chemically weeded before winter, after the spring average daily temperature has steadily passed 6°C, select sunny weather from 10:00 am to 4:00 pm. According to the type of weeds in the field, select herbicides on the road and remove them in time. And strictly in accordance with the use of concentration, appropriate period and technical operating procedures to avoid phytotoxicity.
Fifth, to prevent freezing injury, timely remedy. Pay close attention to changes in the weather, timely irrigation before cooling, improve the soil moisture content, regulate the microclimate near the ground, reduce the temperature changes on the ground, and prevent early spring freezing injury.
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