侧深施氮对水稻产量及氮素吸收利用的影响

黄恒, 姜恒鑫, 刘光明, 袁嘉琦, 汪源, 赵灿, 王维领, 霍中洋, 许轲, 戴其根, 张洪程, 李德剑, 刘国林

Effects of side deep placement of nitrogen on rice yield and nitrogen use efficiency

HUANG Heng, JIANG Heng-Xin, LIU Guang-Ming, YUAN Jia-Qi, WANG Yuan, ZHAO Can, WANG Wei-Ling, HUO Zhong-Yang, XU Ke, DAI Qi-Gen, ZHANG Hong-Cheng, LI De-Jian, LIU Guo-Lin

表6 侧深施肥不同施肥方式对水稻干物质积累的影响

Table 6 Effects of different fertilization methods on dry matter accumulation of rice

年份 Year 品种 Variety 处理 Treatment 拔节期 Jointing stage (t hm-2) 抽穗期 Heading stage (t hm-2) 成熟期 Maturity stage (t hm-2) 收获指数 Harvest index (%) 2019 南粳9108 Nanjing 9108 0N 2.73 d 7.02 c 13.20 c 54.62 a CFM 3.37 c 10.57 b 19.77 b 50.94 b FM1 4.72 a 10.62 ab 18.67 b 50.62 b FM2 4.70 a 11.63 a 20.13 ab 51.96 b FM3 3.75 b 11.70 a 21.77 a 52.09 b FM4 3.73 b 11.63 a 21.66 a 50.37 b 南粳5718 Nanjing 5718 0N 3.07 d 8.40 b 14.69 d 56.16 a CFM 3.83 c 11.37 b 21.87 b 47.42 b FM1 4.98 a 11.75 ab 20.60 c 49.13 b FM2 4.93 a 12.19 a 21.61 b 48.36 b FM3 4.41 b 12.56 a 23.10 a 48.66 b FM4 4.41 b 12.52 a 23.04 a 48.18 b 2020 南粳9108 Nanjing 9108 0N 2.43 d 6.51 c 11.95 c 56.65 a CFM 3.56 c 10.25 b 19.47 b 50.34 b FM1 4.86 a 11.01 ab 19.26 b 51.40 b FM2 4.89 a 11.34 a 20.23 ab 50.77 b FM3 4.03 b 11.28 a 20.78 a 51.64 b FM4 4.05 b 11.31 a 20.84 a 50.82 b 南粳5718 Nanjing 5718 0N 2.62 d 7.59 b 13.27 d 58.54 a CFM 3.73 c 10.77 b 21.42 b 47.10 b FM1 5.31 a 12.25 ab 20.70 c 49.18 b FM2 5.33 a 12.82 a 22.11 ab 47.85 b FM3 4.42 b 12.45 a 22.86 a 47.77 b FM4 4.43 b 12.48 a 22.97 a 46.63 b 方差分析Variance analysis Y ns ns ns ns V ns ** ** ns T ** ** ** ** Y×V ns ns ns ns Y×T ns ns ns ns V×T ** ** ** * Y×V×T ns ns ns ns