不同降水年型黄土旱塬冬小麦免耕与深松轮耕蓄墒增收效应

于琦,李军,周栋,王淑兰,王浩,李敖,张元红,宁芳,王小利,王瑞

Effects of No-Tillage/Subsoiling Rotational Tillage System on Increasing Soil Water Storage and Crop Yield Under Different Precipitation Patterns of Winter Wheat in the Loess Plateau

YU Qi,LI Jun,ZHOU Dong,WANG ShuLan,WANG Hao,LI Ao,ZHANG YuanHong,NING Fang,WANG XiaoLi,WANG Rui

表5 不同降水年型各耕作处理冬小麦ET、WUE与产量情况

Table 5 ET, WUE and grain yield of winter wheat with three tillage treatments under different precipitation patterns

降水年型 Precipitation patterns 处理 Treatments ET (mm) WUE (kg·hm-2·mm-1) Yield (kg·hm-2) 干旱年 Dry year NNS 264.7b 12.3a 3238a NS 282.3a 11.3ab 3130ab N 282.6a 10.5b 2999b 均值 Mean 276.5b 11.4b 3122c 丰水年 Humid year NNS 399.8a 14.4a 5621a NS 406.2a 13.5b 5206b N 385.0b 13.4b 5098b 均值 Mean 397.0a 13.8a 5308a 平水年 Normal year NNS 330.2b 12.1a 4079b NS 367.4a 11.5b 4282a N 358.5a 11.9a 4297a 均值 Mean 352.0a 11.8b 4219b 平均 Average NNS 316.5b 12.7a 4048a NS 338.2a 11.8b 3975ab N 330.7a 11.6b 3898a 均值 Mean 328.5a 12.0b 3974b