Summer corn seedling management points

First, check the seedlings and make up the seedlings, prevent the lack of seedlings and ridges to ensure the whole seedlings, should check the seedlings and make up the seedlings in time, use the early maturing varieties to replant after germination or before the seedlings 4-5 leaf age, transplant the soil in the afternoon or cloudy days. . Maize 3-4 leaves and time seedlings, 5-6 leaves fixed seedlings, remove weak seedlings, seedlings, diseased seedlings, round stalk seedlings, and choose the same size of healthy seedlings.

Second, timely cultivating, to prevent grass germination in the seedling stage should be cultivating and weeding 2-3 times, before the seedlings, cultivating should be shallow, 5 cm deep. Before the jointing, the grass was ploughed for 1-2 times, and the secondary roots were deep-rooted, with a depth of 10 cm. The rows were deep and the seedlings were shallow. Advocate chemical weeding, use corn treasure or Ba A mixture 100-120 ml per acre, 50 kg of water, spray evenly.

Third, check the disease and control pests, prevent pests and diseases, promptly remove the weeds in the fields, hoes, and ground, and eliminate mites and locusts. The corn thrips harm the corn heart leaves in the middle and late June, and the heart leaves are twisted. The damaged leaves are silvery white streaks, and the severe heart leaves turn yellow and die. Control method: 50% phoxim emulsifiable concentrate 1000 times liquid spray.

Fourth, chasing off the heart and fat, to prevent bullying and small depreciation should take early measures for weak seedlings, single plant management, promote weak and strong, so that it can quickly catch up with the height of the general plant, to prevent the late stage due to severe depression, empty stalks or small spikes, The phenomenon of baldness and lack of grain. The commonly used method is to apply eccentric fertilizer, apply 5-10 kg of quick-acting nitrogen fertilizer per mu, apply the hole near the plant, and loosen the soil in time after the application.

Fifth, the combination of irrigation and drainage, to prevent the buds of corn seedlings is characterized by drought tolerance, as long as it is not severe drought, generally do not need watering, but should be drained in time. Corn seedlings have heavy rains and heavy rains. They should be drained in time after rain to prevent hot rain from damaging stems and leaves and roots, causing dead seedlings, especially those with poor quality of land and land preparation, and timely drainage, and timely cultivating , dilated ventilation to prevent buds.