The growing traits were studied and economic benefit of planting maize were compared under normal planting,interval planting,fostering seedling transplanting and plastic covering.Results of the experiment showed that the growth and development of maize were moved up by fostering seedling transplanting and plastic covering.Uniformity of ear trait was improved and the leaf area index dropped slowly in late of the season.In fostering seedling transplanting and plastic covering treatment,population structure was excellent and yield of maize was obviously improved.If the price was reasonable,maize cultivation could bring farmers more economic benefit.