Lodging is one of the main factors affecting the high yield, high quality and quality of wheat. The lodging of wheat mainly occurred in high-yield wheat fields with sufficient fertilizer, water, wheat, groups, and fields. Early spring is a crucial period to prevent the lodging of wheat. Its comprehensive anti-stuffing technical measures are: after the first internode of wheat (later jointing period), topdressing watering, urea topdressing 7.5 to 10 kg, which can reduce the invalid Divide, reduce the length of the internodes of the base, promote sturdy stalks, prevent late lodging, increase grain number and improve quality.
1. Deep-rooted deep-rooted cultivating is an important measure to control groups and prevent lodging, and for groups of large (more than 900,000 high-yielding wheat fields with a population of up-to-be harvested acres), wheat fields with a long growing trend, cultivating before and after a deep cultivation of 8 to 10 cm. Cut off the floating roots, suppress small tillers, promote the growth of main stems and large shoots, accelerate polarization, delay the ridging period, and promote robust growth of plants.
2. Appropriate repression of wheat fields with large populations and high plant heights, in addition to controlling the return of green manure water and deep cultivator, the replanting must be carried out before jointing to promote the root system to lower the bark, to interpenetrate the internodes and reduce the plant height. . The repression will be carried out 2 to 3 times depending on the degree of prosperity, with an interval of 4 days or so, and the principle of "not to be pressed" in "wet, morning, and cloudy days" should be mastered during repression.
3. Chemical control Chemical control is one of the effective measures to prevent the lodging of wheat. For wheat varieties with a large population and long growing season or higher varieties of plants, 15% paclobutrazol (30-50g) or 20% Zhuangfengan (15%) is used during the wheat growth period. Emulsion 30 ~ 40 milliliters, add 30 kilograms of water spray to control the growth of plants, shorten the internodes of the base, reduce the height of the plant, increase the vitality of the roots, and enhance lodging resistance.
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