耕作覆盖对宁南旱区土壤团粒结构及马铃薯水分利用效率的影响

苗芳芳,勉有明,普雪可,吴春花,周永瑾,侯贤清

Effects of Tillage with Mulching on Soil Aggregate Structure and Water Use Efficiency of Potato in Dry-Farming Area of Southern Ningxia

MIAO FangFang,MIAN YouMing,PU XueKe,WU ChunHua,ZHOU YongJin,HOU XianQing

图2 不同耕作覆盖措施对休闲期土壤蓄水量的影响 (a)：2013—2014年休闲末期土壤蓄水量;(b)：2014—2015年休闲初期土壤蓄水量,(c)：2014—2015年休闲末期土壤蓄水量,(d)：2015—2016年休闲初期土壤蓄水量,(e)：2015—2016年休闲末期土壤蓄水量。同时期不同小写字母表示在0.05水平差异显著。*表示差异显著（P<0.05）,**表示差异极显著（P<0.01）,ns表示差异不显著（P>0.05）。下同

Fig. 2 Effects of tillage with mulch measures on soil water storage during the fallow period (a): Soil water storage at the end of leisure during 2013-2014; (b): Soil water storage at the beginning of leisure from 2014 to 2015; (c): Soil water storage at the end of leisure during 2014-2015; (d): Soil water storage at the beginning of leisure from 2015 to 2016; (e): Soil water storage at the end of leisure during 2015-2016. Values followed by different lowercase letters within the same stage are significantly different at P<0.05. * Indicates significance (P<0.05), ** Indicates extremely significant (P<0.01), ns: Indicates no significance (P>0.05). The same as below