Due to the heaviness in the middle and upper parts of the corn during the late growth period, lodging often occurs in storms. There are three types of corn lodging: First, the roots fall, that is, the corn plants tilt up and fall from the ground together with the roots. The second is the stem fold, which means that the roots of the corn plants did not fall, but they were broken from the base of the three or four nodes. The third is the bending, that is, the upper part of the corn plant is bent and twisted. Then, how should we manage the occurrence of corn lodging?
In order to prevent the collapsed corn stalks from being broken more severely, and to aggravate the guiding function of the damaged catheter tissue, try not to straighten the corn at this time. It is recommended that the masses adopt the following technical measures to counteract the lodging situation of corn:
One is to harvest ripe corn after sunny days and dry it in time.
The second is to unearth the corn, to try to knock down the old leaves of the lower part of the corn stover, in order to strengthen the lodging between the corn light ventilation, and at the same time as soon as possible peel off the bread corn sticks outside the “corn pantsâ€, so that exposed corn stick exposure To prevent grainy mildew.
The third is to remedy the lodging situation. For corn that has fallen down, because the upper part is heavier, the plants are difficult to stand upright and must be raised immediately after the storm. The longer the time delay, the heavier the reduction in production. When lifting, make the stem and the ground form an appropriate angle. If it is too straight, the damage will be more severe. After the collapse of the site, the plants should be straightened and soiled as soon as possible after the rain to re-establish the plant. When picking up a plant that has fallen to the ground, be sure to pay attention to the order of operations and avoid operating in reverse. For a land that has fallen, after the rain, a long pole can be used to gently shake the plants and shake off the rainwater to reduce the pressure on the plants. After the weather is fine, let the plants slowly recover upright growth; but when shaking off the rain, care should be taken not to turn the plants. In order to prevent artificial broken stems. For corn plants with stem fractures, yields are basically not formed, so the inverting plants should be cut off as soon as possible; the land with severe stem breakage will be dead as a result. Consider cutting the inverted corn plants as green feed, and then Replant some leaf vegetables.
The fourth is the application of foliar nutrient fertilizer to the upper green leaves to help extend the lifespan of the green leaf and ensure the nutrient supply during the mature period of the corn.
The fifth is to prevent and treat pests and diseases in a timely manner. After corn lodging, pests and diseases are often prone to occur. Leaf diseases such as corn leaf spot and brown spot disease can be sprayed with 50% carbendazim 500 times in the early stage of disease, which can effectively prevent the occurrence and spread of diseases. Timely control of corn borers, at the same time spread baits in the field to prevent pests and other pests to eat the lodging of corn grain.
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