First of all, we have to choose the soil. Sweet corn is a crop that is fatty, hot, aerobic, and prone to flooding. Therefore, the selection is best made on the basis of easy drainage, easy management, land on the border between ph6. 5-7 and above fertility or sandy soil。
Next is the application of fertilizer, which is a prerequisite for the preservation of seedlings. After the selection, deep tilling is generally carried out with two ploughs and more than 30 centimetres deep in order to meet the requirements of “land level, soil detail, foot and fatty”. The ground was then opened with a line length of 120 - 140 centimetres and applied to the gutter with a base bar of 1,000 kg per acre of rotting farmer fat, 50 kg of beanscake and 50 kg of calcium per phosphate. The sun is soaked for three to four hours, usually 10 to 15 minutes in warm water at 50 to 55°c, then 6 to 8 hours in cooling, and can then sow with fresh water one or two times。
Finally, care is taken to sow, and sweet corn is usually grown live, with less seeding. The method is to plant the seeds, with a width of 120-140 centimetres (gauges), about 20 centimetres high, and to open a shallow ditch with two rows of 50-60 centimetres apart on the side, sowing each of the treated seeds in a ditch (by range), spreading the soil side by side, covering the soil with an inch and laying it down。
Management: in principle, prevention is the primary principle, integrated treatment is the early detection of early intervention in management. The main problems with maize are frowns, rusty, tattoos, etc. The pests are mainly corn troubles, sticky worms, corn aphids, cotton bells, small tigers, etc. In the treatment of pharmaceutical products, 50 per cent more than 500 times more large and small leaves and rusty, and 5 per cent more than 500 times more can be sprayed with chomperin. Corn distress, adhesives can be killed with 10% chlorocypermethrin up to 2,000 times the bt powder 800 times, corn aphids up to 3000 times the convulsion 20%, cotton bellworms can be killed with 800 times the bt powder and 800 times the natural powder。
