减氮覆膜对黄土旱塬小麦产量及养分吸收利用的影响

刘凯,谢英荷,李廷亮,马红梅,张奇茹,姜丽伟,曹静,邵靖琳

Effects of Nitrogen Reduction and Film Mulching on Wheat Yield and Nutrient Absorption and Utilization in Loess Plateau

LIU Kai,XIE YingHe,LI TingLiang,MA HongMei,ZHANG QiRu,JIANG LiWei,CAO Jing,SHAO JingLin

表6 不同种植模式下0—20 cm土层肥力变化情况

Table 6 The fertility changes of 0-20 cm soil layer under different planting modes

处理 Treatment 有机质 Organic matter (g·kg-1) 硝态氮 Nitrate nitrogen (mg·kg-1) 有效磷 Available phosphorus (mg·kg-1) 速效钾 Available potassium (mg·kg-1) 2012年播前Pre-sowing in 2012 14.1a 10.4a 10.4b 168.2b FP 2018年播前Pre-sowing in 2018 14.8a 11.4a 18.8ab 172.0b MF 2018年播前Pre-sowing in 2018 14.4a 5.6b 23.3a 207.0a RFSF 2018年播前Pre-sowing in 2018 15.1a 5.2b 21.1a 208.8a