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1 施石灰和秸秆还田对双季早稻产量及其构成、氮素吸收的影响(F值)

Table 1 Effects of liming and straw incorporation on grain yield and its components, and N uptake in early 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) 16.0** 20.1** 0.2 1.3 33.5** 48.0** 秸秆还田 Straw incorporation (RS) 154.2** 15.6** 7.8** 0 111.3** 133.5** 年份 Year (Y) 100.0** 7.9** 87.8** 11.8** 64.1** 111.0** 石灰×秸秆还田 L×RS 3.0 1.0 0.9 0.6 7.2* 4.8* 石灰×年份 L×Y 2.1 3.4* 3.6* 0.3 4.6** 5.4** 秸秆还田×年份 RS×Y 1.4 4.8** 1.6 1.1 4.7** 5.2** 石灰×秸秆还田×年份 L×RS×Y 0.2 0.5 0.5 0.3 1.2 1.6