条带深松对不同密度玉米群体根系空间分布的调节效应

王新兵, 侯海鹏, 周宝元, 孙雪芳, 马玮^#cod#x0002A;, 赵明^#cod#x0002A;

Effect of Strip Subsoiling on Population Root Spatial Distribution of Maize under Different Planting Densities

WANG Xin-Bing, HOU Hai-Peng, ZHOU Bao-Yuan, SUN Xue-Fang, MA Wei^#cod#x0002A;, ZHAO Ming^#cod#x0002A;

图2 0~50 cm土层中个体与群体根系干重的差异 NT: 免耕; SS: 条带深松耕作。LD: 低种植密度4.50万株 hm -2 ; MD: 中种植密度6.75万株 hm -2 ; HD: 高种植密度9.00万株 hm -2 。标以不同字母的图柱值在0.05水平上差异显著。
Fig. 2 Difference of individual and population root dry weight in 0-50 cm soil profile NT: no tillage; SS: strip subsoiling. LD: low planting density 45 000 plants hm -2 ; MD: middle planting density 67 500 plants hm -2 ; HD: high planting density 90 000 plants hm -2 . Bars followed by different letters are significantly different at 0.05 probability level.