Premature sowing, excessive sowing, and excessive use of nitrogen fertilizer in the base fertilizer will lead to prolonged wheat. The long-term sugar content and various organic nutrient concentrations in Wangchang wheat are low, and the freezing point is high. Especially after the young spikes enter the two-edge period, the cold resistance is reduced, and it is easy to suffer from freezing damage. The light dead leaves die, and the whole ones die. , directly affecting wheat production. The upper part of M. sylvestris grows vigorously, with many stems, large leaves, elongated internodes, weak stems, less dry matter accumulation, and poor root development, which poses hidden dangers for later lodging.
The use of physical control methods, such as repression, deep lines between the lines, large workload, time-consuming labor. The use of chemical control method, saving time and labor, twice the result with half the effort, wheat without herbicide before winter can be sprayed with the control agent.
At present, the good wheat control products on the market, the mechanism of action is mostly to make the wheat roots strong and shorten the internodes, laying a good foundation for shaping the ideal plant type of wheat. The shortening of wheat internodes refers to narrowing the distance between the first and third quarters of the wheat, so the time for controlling the time is well grasped. Early control, affecting wheat to rejuvenation, wheat does not reach the desired height. After the late control, the bottom of the wheat has been growing normally from 1 to 3 knots. The height of the bottom internode is fixed. The constriction will shrink the middle section, forming the upper and lower joints, and the middle section is thick, but it is more likely to fall. Furthermore, after the jointing period, the wheat enters the booting stage, and the vegetative growth gradually changes to reproductive growth. At this time, it is controlled again, which is easy to cause wheat heading delay, uneven heading or inconsistency, affecting flowering pollination, and thus affecting wheat yield. Here, the majority of farmers are reminded that they must be chemically controlled in the early stage of greening.
Need to be reminded that wheat control is not as short as possible. Because the growth and flowering of any crop requires a lot of nutrients, if the plant does not have a reasonable height and there is no accumulation of sufficient nutrients, there is no potential for high yield. While controlling plant height, it promotes the development of wheat roots, stalks, and toughness, so that wheat's lodging resistance is stronger, which is the goal of controlling Wang.
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