Study on Technique Way to Increase Unit AreaYield in the Main Production Zone of Spring Maize

Aiming at restricting the main factors to increase the unit area yield of spring maize further,the technique ways on how to increase unit area yield in the main production zone of spring maize were discussed again.Technique ways affecting maize yield including cultivation way,returning straw into field,improving nitrogen fertilizer application way,planting good maize variety and increasing cultivated land quality were studied in this paper.