施氮量和密度互作对全覆膜旱作甜菜光合特性和块根产量的影响

闫威,李国龙,李智,曹阳,张少英

Effects of Nitrogen Application Rate and Planting Density Interaction on Photosynthetic Characteristics and Root Yield of Sugar Beet under Full-Film Mulching in Arid Regions

Wei Yan,Guolong Li,Zhi Li,Yang Cao,Shaoying Zhang

表1 甜菜密度和施氮量的裂区设计

Table 1 Split-plot design about planting density and nitrogen application rate in sugar beet

处理Treatment 行距Row spacing (cm) 株距Plant spacing (cm) 种植密度Planting density (万株/hm2) 施氮量Nitrogen application rate (kg/hm2) D1N1 50 26 7.7 60 D2N1 50 22 9.1 60 D3N1 50 18 10.6 60 D1N2 50 26 7.7 120 D2N2 50 22 9.1 120 D3N2 50 18 10.6 120 D1N3 50 26 7.7 180 D2N3 50 22 9.1 180 D3N3 50 18 10.6 180