不同密度对正德306农艺性状及产量的影响

Effects of Planting Density on Agricultural Traits and Yield of Zhengde 306

以玉米新品种正德306为试验材料,设置5个密度水平,采用随机区组设计田间小区试验方法,研究了不同栽培密度对该品种农艺性状及产量的影响.结果表明：正德306在河西地区最佳密度为8.25万株/hm2,单产达16308.15kg/hm2,适宜密度范围为7.5万～8.25万株/hm2,两密度下单产之间差异不显著.通过相关性分析得出,密度与穗长、穗粗、稳行数、行粒数、穗粒数、千粒重均呈负相关,且与穗长、稳行数、行粒数、穗粒数呈显著负相关,与穗粗、千粒重相关不显著.

Taking new maize cultivar Zhengde 306 as test material, 5 planting densities with randomized plot design were adopted on study of effects of planting density on agricultural traits and yield of Zhengde 306. The results showed that the best planting density in Hexi area was 82500 plants/hmz, the yield was 16308. 15kg/hmz, the appropriate planting density were 75000-82500 plants/hm2, difference of yield was not significantly under these 2 planting densities. Correlation of planting density and ear length, diameter of ear, rows per ear, grains per row, grains per Bar, thousands weight were negative, correlation of planting density and ear length, tows per ear, grains per row, grains per ear were obviously negative, correlation of planting density and diameter of ear, thousands weight were not obviously negative.