不同行距配置对新单38农艺性状和产量的影响

Effects of Different Row Spacing on Agronomic Traits and Yield of Xindan 38

以玉米新品种新单38为材料,研究5种不同行距(0.5、0.6、0.7、0.8m等行距和0.8m+0.4m宽窄行)配置对其农艺性状(株高、穗位高、雄穗主轴长度、雄穗分枝数、总叶片数、穗上叶片数及第7、第8、第9节的节间长度)和产量的影响。结果表明:与其余行距配置相比,0.6m等行距种植,新单38的穗位高较低,产量最高;0.8m等行距种植,株高较低,第8、第9节的节间长度较短,雄穗分枝数较少,产量最低;0.8m等行距种植的产量与其它处理相比差异均达极显著水平。新单38的最宜种植行距是0.6m等行距。

Five different row spacing patterns were used to study their influences on the agronomic traits and yield of the new maize cultivar Xindan 38.Four patterns were set with equal row spacing as 0.5, 0.6, 0.7 and 0.8 m, and one was set with wide row spacing as 0.8 m and narrow row spacing as 0.4 m.The agro-nomic traits including planTheight , ear height , tassel main axis length , tassel branch number , total leaf num-ber, leaf number above ear and the internode length between the 7th, 8th and 9th nodes were investigated . The results showed that compared with the other row spacing patterns , the ear height was lower and the yield was the highest under the 0.6-meter equal row spacing pattern .Under the 0.8-meter equal row spacing pattern, the planTheight was relative lower;the internode length between the 8th and 9th nodes was relative shorter;the tassel branch number was relative less , and the yield was significantly lower than the other pat-terns.In conclusion, the optimum patter for Xindan 38 was 0.6-meter equal row spacing.