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4 不同旋耕深度对土壤饱和含水量、毛管含水量和田间持水量的影响 图a、b、c和e、d、f分别为2016年和2017年的土壤饱和含水量、毛管含水量和田间持水量。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。处理同图3。

Fig. 4 Effects of different tillage depths on soil saturation moisture, capillary moisture, and field water capacity a, b, c and e, d, f indicate the soil saturation moisture, capillary moisture and field water capacity in 2016 and 2017, respectively. Bars with different lowercase letters in the same soil depth mean significant difference among treatments at the 0.05 probability level. Treatments are the same as those given in Fig. 3.