Primary Research on Yield Improvement Effect of Different Cultivation Mode to Maize in Dry Land

Three varieties Jidan 27,Jidan 505,Jiangdan No.1 were used to analyze the yield of five cultivation mode followed by partial ridge,ridge distance 50 cm,ridge distance 65 cm,ridge distance 130 cm and Ⅱ1465.The results showed that:The yield of mode of ridge distance 50 cm was 10 306.2 kg·hm-2,the yield of mode of ridge distance 130 cm was 9 182.6 kg·hm-2,the yield of mode of ridge distance 65 cm was 9 021.1 kg·hm-2,the yield of modeⅡ1465 was 8 809.7 kg·hm-2 and the mode of partial ridge was 8 047.2 kg·hm-2.The mode of ridge distance 130 cm was recommended the most suitable mode after comprehensive analysis of production cost and agricultural implements.