不同种植密度与行距配置对先玉335产量性状的影响

Effects of Planting Density and Row Spacing on Yield Characters of Xianyu 335

在黄淮海北部地区,以先玉335为试材,采用双因子裂区试验设计,其中,种植密度设60000和75 000株/hm2计2个水平,行距配置设等行距50、60、70和80 cm以及宽窄行(80+40)cm计5种模式,研究了不同种植密度与行距配置对夏播玉米产量相关性状的影响。结果表明:不同种植密度的产量差异不显著,不同行距配置的产量差异达到了极显著水平。在60000株/hm2密度条件下,80+40 cm宽窄行种植产量(11068 kg/hm2)最高,显著高于其他行距种植,其中较第2位产量高8.58%;在75 000株/hm2密度下,60 cm等行距和(80+40)cm宽窄行种植产量较高,二者产量差异不显著。在试验的种植密度与行距配置条件下,60 000株/hm2密度、(80+40)cm宽窄行配置先玉335产量最高。

In the north of Huanghuaihai area,summer corn Xianyu 335 was discussed using two-factor split plot experimental design under different densities（60 000 and 75 000 plants/hm2） and row spacing patterns[50 cm,60 cm,70 cm,80 cm,（80 ＋ 40） cm] with 3 repeats.The effects of different densities and row spacing on summer corn yield related traits were analyzed.The results showed that the differences of grain yields between 60 000 and 75 000 plants/hm2 was not significant,there was significant differences in yields among treatments of row spacing.Under the density of 60 000 plants/hm2 and the row spacing pattern of 80 ＋ 40 cm,the yield of corn was highest（11 068 kg/hm2） and significantly higher than other planting spacing patterns,which was higher than the second by 8.58%.The yield of corn was higher and had no significant difference with the first under the density of 75 000 plants/hm2 and the row spacing pattern of 60 cm and（80 ＋ 40） cm.Under the configuration of test density and row spacing,the optimum planting pattern for summer corn Xianyu 335 in Huanghuaihai area was（80 ＋40） cm row spacing with 60 000 plants/hm2.