施石灰和秸秆还田对双季稻产量和氮素吸收的互作效应

廖萍,刘磊,何宇轩,唐刚,张俊,曾勇军,吴自明,黄山

Interactive effects of liming and straw incorporation on yield and nitrogen uptake in a double rice cropping system

Ping LIAO,Lei LIU,Yu-Xuan HE,Gang TANG,Jun ZHANG,Yong-Jun ZENG,Zi-Ming WU,Shan HUANG

表2 施石灰和秸秆还田对双季晚稻产量及其构成、氮素吸收的影响(F值)

Table 2 Effects of liming and straw incorporation on grain yield and its components, and N uptake in late rice (F-values)

变异来源 Source of variations 有效穗 Effective panicle 每穗粒数 Spikelets per panicle 结实率 Seed-setting rate 千粒重 1000-grain weight 产量 Grain yield 氮素吸收 N uptake 石灰 Liming (L) 94.3** 45.2** 1.1 9.7** 125.7** 93.1** 秸秆还田 Straw incorporation (RS) 0.9 69.5** 22.2** 0.4 18.4** 65.7** 年份 Year (Y) 67.8** 15.6** 37.7** 11.5** 49.4** 26.1** 石灰×秸秆还田 L×RS 25.9** 0.4 0.6 0.3 10.4** 38.0** 石灰×年份L×Y 10.3** 5.5** 2.2 1.1 20.8** 15.2** 秸秆还田×年份RS×Y 2.3 3.6* 7.5** 1.9 0.7 10.3** 石灰×秸秆还田×年份 L×RS×Y 6.5** 0.1 0.7 0.2 1.2 6.1**