What should we pay attention to when sowing summer corn?

What should we pay attention to when sowing summer corn? Please give advice on summer corn sowing to pay attention to the following points: first, appropriately postpone sowing. The best sowing time of summer corn is from June 20 to 30, which not only avoids high temperature, but also helps to obtain high yield. after sowing, a bottle of Yunong Si mixed with water 100 jin spray is used to block weeding per mu. Second, seed selection and seed soaking. Varieties with strong drought tolerance (such as Dan 2, Shandan 902, etc.) were selected to soak in the sun before soaking, soaking seeds in 55 ℃ warm water for 8 hours, and sowing seeds after cool drying, in order to sow the whole seedling. Third, check seedlings to fill the gap. 3-leaf stage transplanting to fill the gap, 5-leaf stage fixed seedlings, leaving one seedling in each hole. Fourth, fertilizer operation. Compound fertilizer 50 kg per mu of base fertilizer, 1 kg zinc fertilizer, sprinkle fertilizer after ploughing and rake fine compartment. Fertilizer seed caves are strictly prohibited, affecting seedling emergence, topdressing in six-leaf stage, 15 to 20 kilograms of urea per mu, and covering soil in holes. Fifth, control corn borer. In the nine-leaf stage (and the big trumpet stage), 1 kg of corn worm was used per mu, and 15 kg of fine wet soil was used to lose stamens. Control the jade borer. Sixth, spray Fengle Sheng Lu. In the big trumpet period, spraying the second generation of Fengle Shenglu + potassium dioxide phosphate + urea with 50 kg water per mu can reduce plant height, increase diameter, reduce baldness, increase seed setting rate and increase yield. Click to get more corn planting techniques click to get more food crop planting techniques