种植密度对油菜机械收获关键性状的影响

李小勇, 周敏, 王涛, 张兰, 周广生, 蒯婕

Effects of Planting Density on the Mechanical Harvesting Characteristics of Semi-winter Rapeseed

Xiao-Yong LI, Min ZHOU, Tao WANG, Lan ZHANG, Guang-Sheng ZHOU, Jie KUAI

表2 密度对油菜成熟期农艺性状的影响

Table 2 Effect of density on agronomic traits at maturity of rapeseed

年份 Year 品种 Variety 密度 Density 根颈粗 Root crown diameter (mm) 株高 Plant height (cm) 分枝高 Branch height (cm) 分枝数 Branch number 结角起点 Pod starting point (cm) 2014-2015 中双11 Zhongshuang 11 D1 20.81 a 168.17 a 62.00 c 6.0 a 96.73 a D2 16.79 b 162.50 ab 76.43 b 4.3 ab 96.73 a D3 14.97 c 156.99 bc 82.57 ab 4.2 bc 97.47 a D4 12.35 d 151.53 c 90.33 a 2.5 c 96.60 a 华油杂9号Huayouza 9 D1 16.08 a 164.84 a 58.51 c 6.3 a 85.61 a D2 14.34 b 155.83 ab 68.87 b 4.1 b 83.97 a D3 13.35 b 152.32 b 76.62 ab 3.3 c 82.81 a D4 11.22 c 147.19 b 81.75 a 2.9 c 82.41 a 2015-2016 中双11 Zhongshuang 11 D1 21.28 a 170.00 a 63.77 c 6.3 a 99.50 a D2 16.05 b 167.23 ab 78.03 b 4.3 b 104.33 a D3 13.97 bc 164.50 ab 86.43 ab 3.7 b 104.80 a D4 12.90 c 162.33 b 97.43 a 1.7 c 105.00 a 华油杂9号Huayouza 9 D1 19.69 a 173.67 a 54.60 c 7.7 a 94.57 a D2 14.66 b 170.53 ab 81.90 b 5.3 b 98.50 a D3 13.22 c 165.50 bc 82.67 b 5.3 b 99.67 a D4 11.94 d 158.17 c 90.00 a 4.3 c 97.83 a 方差分析 Variance analyses 年份(Y) ** ** ** ** ** 品种(V) ** ** ** * ** 密度(D) ** ** ** ** NS Y×V ** NS NS ** * Y×D ** NS * * ** V×D NS NS NS ** NS Y×V×D NS NS NS NS NS