西北干旱灌区不同地膜覆盖利用方式对玉米水分利用的影响

殷文,郭瑶,范虹,樊志龙,胡发龙,于爱忠,赵财,柴强

Effects of Different Plastic Film Mulching and Using Patterns on Soil Water Use of Maize in Arid Irrigated Area of Northwestern China

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

表3 不同地膜覆盖利用方式下玉米各生育阶段的耗水量及耗水结构

Table 3 Evapotranspiration (ET) and the ratio of soil evaporation to evapotranspiration (E/ET) for maize at each of growth stage under different plastic film mulching and using patterns

年份 Year 处理 Treatment 玉米生育阶段 Maize growth stage 全生育期 Whole growth period 播种—拔节 Sowing-jointing 拔节—大喇叭口期 Jointing-big flare 大喇叭口期—吐丝期 Big flare-silking 吐丝期—灌浆初期 Silking-early filling 灌浆初期—收获期 Early filling-harvesting ET (mm) E/ET (%) ET (mm) E/ET (%) ET (mm) E/ET (%) ET (mm) E/ET (%) ET (mm) E/ET (%) ET (mm) E/ET (%) 2017 NM 108a 50.5a 128a 27.3a 88a 41.1a 89b 33.8b 219a 16.1c 633a 30.2a RM 105a 45.8b 132a 22.9b 92a 37.7b 94ab 35.4b 212ab 19.0b 635a 29.4a CM 98b 41.1c 120b 22.3b 91a 35.1c 99a 38.3a 203b 22.7a 612a 30.0a 2018 NM 97a 56.4a 118a 32.9a 93b 29.7a 134b 22.9a 277a 17.8c 720a 28.0a RM 92b 51.6b 120a 27.6b 101a 27.1b 138ab 21.2b 272ab 21.0b 723a 26.9a CM 82c 50.1b 110b 26.1c 100a 26.9b 142a 23.7a 264b 23.5a 698a 27.6a