干旱内陆灌区不同秸秆还田方式下春小麦田土壤水分利用特征

殷文,柴强,胡发龙,樊志龙,范虹,于爱忠,赵财

Characteristics of Soil Water Utilization in Spring Wheat Field with Different Straw Retention Approaches in Dry Inland Irrigation Areas

YIN Wen,CHAI Qiang,HU FaLong,FAN ZhiLong,FAN Hong,YU AiZhong,ZHAO Cai

表2 不同秸秆还田方式下春小麦各生育阶段的耗水量及耗水模系数

Table 2 Evapotranspiration (ET) and evapotranspiration modulus coefficient (EC) of spring wheat at each of growth period under different straw retention approaches

年份 Year 处理 Treatment 播种—拔节期 Sowing—jointing 拔节—孕穗期 Jointing—booting 孕穗—灌浆初期 Booting—early-filling 灌浆初期—收获期 Early-filling—harvesting 全生育期 Entire growth period ET (mm) CP (%) ET (mm) CP (%) ET (mm) CP (%) ET (mm) CP (%) ET (mm) 2014 NTSS 108a 27.5a 88b 22.3b 76d 19.2d 122a 31.0a 393ab NTS 105a 27.1a 84b 21.6c 82c 21.0c 118ab 30.4a 389b TS 97b 24.5b 98a 24.6a 93b 23.3b 109c 27.6b 397ab CT 94b 23.2c 101a 24.8a 99a 24.3a 112bc 27.7b 406a 2015 NTSS 103a 25.8a 94c 23.6bc 87c 21.8b 115a 28.8a 399b NTS 100ab 25.2a 93c 23.2c 90c 22.6b 116a 29.0a 399b TS 98b 23.4b 103b 24.4ab 111b 26.5a 108b 25.7b 421a CT 98b 22.6b 108a 25.1a 119a 27.5a 107b 24.7b 432a 2016 NTSS 113b 27.6bc 95b 23.1a 98b 23.9a 105b 25.5b 411a NTS 119a 29.1a 89c 21.7b 90c 21.8b 113a 27.5a 411a TS 118ab 28.4ab 97ab 23.3a 103a 24.7a 98c 23.6c 416a CT 113b 26.8c 100a 23.8a 102a 24.2a 106b 25.2b 422a