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5 2012—2019年不同种植模式下氮磷素转移特征

Table 5 Nitrogen and phosphorus transfer characteristics under different planting modes from 2012 to 2019

年份 Year 处理 Treatment 花前营养器官氮素转移 PANT 花后土壤氮素吸收 NUSA 花前营养器官磷素转移 PAPT 花后土壤磷素吸收 PUSA 转移量 Amount of Translocation (kg·hm-2) 转移贡献率 Contribution rate from translocation (%) 吸收量 Amount of Translocation (kg·hm-2) 吸收贡献率 Contribution rate from translocation (%) 转移量 Amount of Translocation (kg·hm-2) 转移贡献率 Contribution rate from translocation (%) 吸收量 Amount of Translocation (kg·hm-2) 吸收贡献率 Contribution rate from translocation (%) 2012—2013 FP 30.3b 77.5a 8.8a 22.5a 6.7b 82.7b 1.4a 17.3a MF 30.5b 82.4a 6.5b 17.6b 7.6b 85.4b 1.3a 14.6b RFSF 45.5a 86.8a 6.9b 13.2c 9.7a 94.6a 1.4a 5.4c 2013—2014 FP 65.6c 75.6c 21.2a 24.4a 13.4b 69.1b 6.0b 30.9b MF 79.5b 81.1b 18.5a 18.9b 8.8c 40.9c 12.7a 59.1a RFSF 94.3a 86.6a 14.6a 13.4c 23.2a 88.2a 3.1c 11.8c 2014—2015 FP 54.7c 71.5c 21.8a 28.5a 13.7b 74.9a 4.6a 25.1a MF 84.1b 80.0b 21.0a 20.0a 14.3b 73.0a 5.3a 27.0a RFSF 99.8a 86.0a 16.2b 14.0b 18.7a 75.7a 6.1a 24.3a 2015—2016 FP 39.5c 74.2b 13.7a 25.8a 5.0b 27.5a 13.2b 72.5a MF 45.5b 74.0b 16.0b 26.0a 4.7b 25.3a 14.0b 74.7a RFSF 57.4a 81.3a 13.2a 18.7b 6.4a 22.7a 21.8a 77.3a 2016—2017 FP 47.4c 79.4b 12.3a 20.6a 17.2b 66.2a 5.1b 33.8a MF 60.4b 89.6a 7.0b 10.4b 17.5b 65.1a 5.6b 34.9a RFSF 74.2a 92.1a 6.4b 7.9b 19.8a 64.3a 7.2a 35.7a 2017—2018 FP 27.4b 68.8a 12.4b 31.2a 6.6b 49.3a 6.8a 50.7b MF 33.6b 73.8a 11.9b 26.2a 5.3b 34.9b 9.9a 65.1a RFSF 45.9a 71.3a 18.5a 28.7a 10.8a 52.4a 9.8a 47.6a 2018—2019 FP 38.7b 75.6b 12.5a 24.4a 4.9b 27.5a 12.9b 72.5a MF 43.6b 73.5b 15.7a 26.5a 4.6b 28.4a 11.6b 71.6a RFSF 56.1a 82.1a 12.2a 17.9b 6.7a 26.2a 18.9a 73.8a 平均 Mean FP 43.4c 74.7c 14.7a 25.3a 9.3b 56.7a 7.5b 43.3a MF 53.9b 79.2b 13.8a 20.8b 8.7b 50.4a 9.0a 49.6a RFSF 67.6a 83.7a 12.6a 16.3c 13.7a 60.6a 10.2a 39.4a