旋耕深度对西北黄土高原旱作区土壤水分特性和马铃薯产量的影响

张绪成, 马一凡, 于显枫, 侯慧芝, 王红丽, 方彦杰, 张国平, 雷康宁

Effects of tillage depth on soil hydrological characteristics and potato yield on northwest Loess Plateau

ZHANG Xu-Cheng, MA Yi-Fan, YU Xian-Feng, HOU Hui-Zhi, WANG Hong-Li, FANG Yan-Jie, ZHANG Guo-Ping, LEI Kang-Ning

图3 不同旋耕深度对土壤容重的影响 TT: 传统旋耕15 cm; VRT: 立式深旋松耕40 cm; VRT6: 立式深旋松耕60 cm。在同一土层标记不同小写字母表示处理间在0.05水平差异显著。

Fig. 3 Effects of different tillage depths on soil bulk density TT: traditional votary tillage at 15 cm soil depth; VRT: vertically rotary tillage at 40 cm depth; VRT6: vertically rotary tillage at 60 cm depth. The bars with different lowercase letters in the same soil depth mean significant difference among treatments at the 0.05 probability level.