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3 夏玉米不同器官和植株中磷积累量

Table 3 Accumulation of P in different organs and plant of summer maize (kg hm-2)

器官 Organ 处理 Treatment 2017 2018 抽雄期 VT 灌浆期 R2 完熟期 R6 抽雄期 VT 灌浆期 R2 完熟期 R6 营养器官 Vegetation organ CK 41.34 c 47.98 e 36.13 e 46.49 d 54.45 e 43.40 c P5 51.38 b 56.76 d 40.81 d 59.55 c 67.25 d 51.23 b P10 58.68 a 75.80 b 49.35 b 62.61 b 72.33 c 51.82 b P15 60.17 a 83.46 a 51.91 a 69.72 a 82.52 a 57.63 a P20 57.80 a 73.13 c 45.74 c 63.82 b 76.06 b 53.18 b 籽粒 Grains CK 3.48 b 51.60 e 6.66 c 78.45 d P5 5.31 ab 60.35 d 12.90 b 88.14 c P10 6.26 a 67.54 c 15.79 a 96.32 b P15 7.36 a 79.81 a 17.97 a 104.06 a P20 6.58 a 71.46 b 16.09 a 98.00 b 整株 Whole plant CK 41.34 c 51.46 e 87.73 d 46.49 d 61.10 e 121.85 d P5 51.38 b 62.07 d 101.16 c 59.55 c 80.14 d 139.37 c P10 58.68 a 82.05 b 116.99 b 62.61 b 88.12 c 148.14 b P15 60.17 a 90.82 a 131.72 a 69.72 a 100.49 a 161.69 a P20 57.80 a 79.71 c 117.09 b 63.82 b 92.14 b 151.18 b