土壤深松下磷肥施用深度对夏玉米根系分布及磷素吸收利用效率的影响

陈晓影,刘鹏,程乙,董树亭,张吉旺,赵斌,任佰朝

Effects of phosphorus fertilizer application depths on root distribution and phosphorus uptake and utilization efficiencies of summer maize under subsoiling tillage

Xiao-Ying CHEN,Peng LIU,Yi CHENG,Shu-Ting DONG,Ji-Wang ZHANG,Bin ZHAO,Bai-Zhao REN

表2 磷肥施用深度对夏玉米产量及产量构成因素的影响

Table 2 Effects of phosphorus application depth on grain yield and its components of summer maize

年份 Year 处理 Treatment 单位面积穗数 Ears (×104 ear hm-2) 穗粒数 Grains per ear 千粒重 1000-grain weight (g) 籽粒产量 Yield (kg hm-2) 2017 CK 6.37 a 425.40 c 381.39 b 7661.53 d P5 6.49 a 439.83 b 385.23 ab 8293.59 c P10 6.42 a 450.31 b 391.15 ab 9277.15 b P15 6.56 a 476.48 a 397.24 a 10023.14 a P20 6.55 a 448.70 b 398.06 a 8926.96 b 2018 CK 6.44 a 477.24 b 381.39 b 9438.52 c P5 6.41 a 476.15 b 385.23 ab 9711.62 c P10 6.33 a 493.59 b 391.15 ab 11063.84 b P15 6.56 a 525.54 a 397.24 a 12178.65 a P20 6.34 a 491.54 b 398.06 a 11021.54 b 变异来源 Source of variation 年份 Year (Y) NS *** *** *** 磷肥施用深度 Phosphorus application depth (P) NS *** *** *** 年份×磷肥施用深度 Y×P NS NS NS NS