Abstract:

In order to find out the most suitable planting density and fertilizer of some stable corn varieties of high yield in the central-south part of Heilongjiang Province, and provide scientific guidance and reference for large scale production and application, the yield of different maize varieties planted at different levels of density and the amount of fertilizer was studied by this three factors randomized experiment. The results showed that, the difference of the yield among different maize varieties and different levels of density was very significant and mutual effect between density and the amount of fertilizer was significant, while the difference of the yield among different fertilizer was not. The results of experimental analysis suggested that, the most outstanding variety was ‘Zhengdan958’, followed by ‘Dongnong250’;the yield of 71500 plants/hm2 was the highest, but had no significant difference with the 57000 plants/hm2;the optimal combination of density and fertilizer application was 57000 plants/hm2 and 225 kg/hm2. In conclusion, the optimal treatment: ‘Zhengdan958’, 57000 plants/hm2, 225 kg/hm2, the second was ‘Dongnong250’, 57000 plants/hm2, 225 kg/hm2, and no significant difference between them.