Abstract:

Abstract: field experiment and assay were proformed to study six different nitrogen application levels on the yield–properties of super-sweet maize, hoping to provide reasonable corn nitrogen fertilizer in the process of growing fall super-sweet maize. The result indicates that 6 different nitrogen application levels can significantly improve leaf area、 length and wide of spike 、grain number of row、yield of flesh-maize cob and weight of 100 flesh grain and 100 dried grain. 225kg/hm2~300kg/hm2 is the optimal nitrogen application rang to improve the frontal 4 yield-properties, and 300kg/hm2~375kg/hm2 is optimal to the latter, weight of 100 flesh grain and 100 dried grain, so it is quite feasible to enhance the maize yield by regulating the application of nitrogen, and nitrogen application level at about 300kg/hm2 not only improve effectively the main yield-properties of maize, decline the production cost, but also avoid the negative effect due to excessive nitrogen application to growth of maize and ecological environment.