辽河三角洲稻区施氮水平对水稻生长发育及产量的影响

李波,宫亮,曲航,金丹丹,孙文涛

Effects of Nitrogen Application Rate on Rice Growth and Yield in Liaohe Delta

Bo Li,Liang Gong,Hang Qu,Dandan Jin,Wentao Sun

表2 不同氮肥用量对水稻产量及其构成因子的影响

Table 2 Effects of different nitrogen application rates on rice yields and yield components

处理 Treatment 有效穗数(×104/hm2) Effective panicles 穗粒数 Grains per panicle 千粒重(g) 1000-grain weight 秕谷率(%) Sterile grain rate 产量(kg/hm2) Yield 植株氮积累量(kg/hm2) Nitrogen accumulation 氮肥利用率(%) Nitrogen use efficiency N0 228e 99.9a 28.23a 1.13a 6 705a 117d - N160 257d 100.8a 28.18a 1.33a 9 246b 164c 38b N210 327b 109.7cd 27.53b 1.38a 10 782d 194b 42a N260 332a 107.9bc 27.62b 2.52b 11 031d 204ab 36bc N315 336a 106.1bc 26.85c 2.63b 11 096d 210a 34c N420 286c 103.1b 25.24d 7.82c 10 120c 211a 24d