How to manage the seedling stage of corn planted at high temperature in summer?

How to manage the seedling stage of corn planted at high temperature in summer? Please introduce that the maize seedling stage is the basic period to ensure high yield. the management goal of this stage is to promote root development, how long roots, deep roots, and cultivate strong seedlings, so as to meet the requirements of full, full and strong seedlings. The focus of management is to strengthen the management of water and fertilizer and the prevention and control of diseases, insect pests and weeds. References are as follows: 1. Check seedlings and replenish seedlings: replanting or transplanting must be completed before 3 leaves, and timely watering and fertilization should be done after replenishing seedlings. 2. Seedling setting: corn must be divided into seedlings in time when it grows to 3 leaves. The seedlings should be dense and sparse, the small ones should be big, the weak ones should be strong, and the diseases should be healthy. Generally, the seedlings should be fixed with 5 leaves. 3. Topdressing and middle ploughing: after setting the seedlings, topdressing and ploughing is carried out according to the growth situation of the seedlings, generally applying 15kg urea per mu as attacking seedling fertilizer, combined with mid-tillage to loosen the soil and weed. 4. Pest control: the harm of pests in seedling stage is serious. Corn seedling stage is the stage of concentrated damage of thrips, Swedish flies, armyworm, cotton bollworm and other pests. This year, the occurrence of Spodoptera litura caused a lack of seedlings, broken ridges, crimped heart leaves, stunted growth, and even seed destruction. Therefore, it is the key to do well the pest control in maize seedling stage. The whole field was sprayed with 2.5% cypermethrin 30 ml plus 50% dimethoate 30 ml or 10% imidacloprid 20 ml 30 g plus 2.5% cypermethrin 30 ml, mixed with water 30 ml 45 kg. 5. Waterlogging prevention: corn is most afraid of waterlogging in seedling stage. If Rain Water is too big, it is necessary to drain and prevent dental waterlogging in time to protect strong seedlings. Click to get more corn planting techniques click to get more food crop planting techniques