(1) Maize plants are "whip-like" and "fist-like": they are severe corn injury. Such damage is not easy to restore the normal growth of the affected plants. The best remedial measures are to artificially assist in dispelling the external appearance of the "whip-like" and "fist-like" form, and then fertilize the water, and in combination with spraying foliar fertilizer or growth regulators, can receive significant results.
(2) The dryness of stems and leaves of corn is relatively serious, but the heart and leaves have not yet died: it is a contact-killing injury. The most effective measure is fertilization and then watering, especially the application of available nitrogen.
(C) General light injury: including the appearance of chlorotic spots in the leaves of the corn, and the inhibition of mild fading growth. The preferred measure is to enhance fertilizer and water management. If there is no watering condition, only foliar fertilizers and growth regulators can be sprayed and certain effects can be obtained. The commonly used agents of this type include neian, gibberellin, potassium dihydrogen phosphate, and urea.
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