1. Selecting excellent sweet corn varieties, density regulation, nutrition regulation and water and fertilizer regulation during the growth of sweet corn are the key technologies for planting. The main factors limiting the growth, flowering and fruiting of sweet corn are temperature and humidity, and it grows better in areas where the annual average temperature is more than 2 1. 3 degrees Celsius and the annual average humidity is more than 64%.

2. The grafting survival rate of sweet corn is over 86%. Young sweet corn trees should be applied with 0.15-0.20kg compound fertilizer and 0.20-0.25kg urea. Calcium-magnesium-phosphate fertilizer should not be applied alone, topdressing should be done 2-3 times a year, and irrigation should be done in time in dry season to promote growth and early fruiting.

3. Prune the growing period from April to August, and select suitable fruiting branches by methods such as bud smearing and pit removal. Prune the dormant period of 2-3 months, and prune overlapping branches, clustered branches and pest branches.