秸秆条带还田对东北春玉米产量、土壤水氮及根系分布的影响

安俊朋, 李从锋, 齐华, 隋鹏祥, 张文可, 田平, 有德宝, 梅楠, 邢静

Effects of Straw Strip Returning on Spring Maize Yield, Soil Moisture, Nitrogen Contents and Root Distribution in Northeast China

Jun-Peng AN, Cong-Feng LI, Hua QI, Peng-Xiang SUI, Wen-Ke ZHANG, Ping TIAN, De-Bao YOU, Nan MEI, Jing XING

表3 2016年秸秆条带还田对春玉米耗水量和水分利用效率的影响

Table 3 Evapotranspiration of field (ET), grain yield, and water use efficiency (WUE) of spring maize in 2016

处理 Treatment 播前土壤贮水量 Pre-planting soil water storage(mm) 收获后土壤贮水量 Soil water storage after harvest (mm) 耗水量 ET (mm) 水分利用效率 WUE (kg hm-2 mm-1) RR+S 430.7±4.3 b 383.6±12.2 a 876.1±6.2 b 13.8±0.5 a RR 420.0±3.9 b 340.1±3.7 c 908.9±15.9 a 12.8±0.5 b IR+S 443.2±11.5 a 397.2±8.9 a 874.9±7.7 b 13.8±0.3 a IR 424.5±2.2 c 354.0±15.1 b 889.4±3.8 b 12.9±0.4 b 显著性分析(F值) Interaction analysis of ET and WUE (F-value) S 15.183** 48.006** 18.390** 14.440** M 5.076 4.830 3.522 0.040 S×M 1.124 0.001 2.753 0.040