Summer corn seedling management five defenses

First, check seedlings make up seedlings to prevent seedlings off the ridge in order to ensure the whole seedlings, seedlings should be timely check seedlings, with early maturing varieties of germination after replanting or in the seedlings before 4 to 5 leaf age, in the afternoon or cloudy day with soil transplant seedlings. Maize 3 to 4 leaves when and time seedlings, 5 to 6 leaves Dingmiao, pull out weak seedlings, seedlings, diseased seedlings, round stalk seedlings, choose to stay the same size of Jianmiao. Second, timely cultivator grass seedlings should be cultivating and weeding 2 to 3 times, Dingmiao, cultivator should be shallow, deep 5 cm is appropriate. Before the jointing, cultivating the grass 1 or 2 times, promote the deep rooting of the secondary roots, the depth of 10 cm, between the rows deep, seedlings shallow. Advocate chemical weeding, use 100-120 milliliters per mu of corn treasure or Yihe mixture, water 50 kg, evenly spray. Third, check pests and insect pests to prevent the timely removal of Tanabe, loquat, heading weeds, eliminate aphids, fly fleas. Corn Thrips damages the heart and leaves of corn in mid-to late June, distorting the heart, causing silvery-white streaks on the victim's leaves, and severe yellowing of the dead leaves. Control methods: 40% omethoate 25-30 ml, watered 30-50 kg, or 50% phoxim EC 1000 times spray. Fourth, chase after the eccentric fertilizer to prevent weakness and weak seedlings should take measures as soon as possible, single plant management, promote weak and strong, so that it quickly catch up with the general plant height, to prevent the late due to severe canopy closure, resulting in empty stalks or ear small, bald A lack of grain. The commonly used method is to apply eccentric fertilizer, and the effective nitrogen fertilizer is 5 to 10 kilograms per acre. The hole is applied near the plant and the soil is loosened immediately after application. Fifth, the combination of drainage and irrigation combined with the prevention of sprouting waxy corn seedlings is characterized by drought resistance, as long as it is not severe drought, generally do not need watering, but the case should be promptly drained. In rains and torrential rains of corn seedlings, the rainwater should be drained in time to prevent heat damage to the stems and leaves and roots, causing dead seedlings, especially to the land with poor quality and quality, and timely drainage. Intertillage, scattered ventilation, to prevent buds.

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