1. The application of potash potassium fertilizer at seedling stage has the effect of increasing the stalk strength of corn. Under the condition of sufficient nitrogen fertilizer application, the combination of potash fertilizer and nitrogen and potassium fertilizer should be promoted. Potassium fertilizer should be applied early and used as seedling fertilizer after emergence. In general, potassium sulfate or potassium chloride can be applied to 10-20 kg per acre.
2. Seedlings and seedlings for seedlings are mainly suitable for spring maize. For plots with higher density and prosperous tendencies, seedlings can be seedlings. The measures for seedling emergence include moderate drought, root cutting, and nitrogenous fertilizer. The main role of seedlings is to control the prosperous growth of stem segments and promote the development of root systems, thereby reducing the probability of lodging. Since the summer corn enters the high temperature and rainy season after emergence, there is basically no opportunity for seedlings.
3. Topdressing nitrogen fertilizer during fertility application of big bell-mouth stage can promote the development of plant or ear, but improper application of nitrogen fertilizer can easily cause lodging. During the jointing stage, the stem segments at the base of corn begin to expand rapidly. If a large amount of nitrogen fertilizer is applied at this time, the growth of the stem segments will be accelerated and the risk of lodging will increase. Production generally does not advocate the application of nitrogen fertilizer at the jointing stage. How to grow corn before it is high-yield, but under the premise of applying seed fertilizer or raising seedling fertilizer, it is delayed until the big bell mouth period and topdressing nitrogen fertilizer. This will not only promote the development of the ear, And it can also reduce the occurrence of lodging.
4. Earth-cultivation of soil during jointing can promote the development of stems and roots on the aerial part of the ground, and enhance the ability of plants to resist lodging. This is one of the effective measures to prevent corn lodging. Cultivating soil can be carried out between jointing and ridge-filling. The cultivating depth is 5 to 8 cm and the earthing height is 8 to 10 cm.
5. 9 to 11 leaves when the use of chemical control agents can control the corn plant internode length and the entire plant height, to a certain extent, can prevent corn lodging. Spraying agents are usually sprayed during 9 to 11 leaves, but care must be taken to strictly comply with the requirements of the product specification.
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