含硅熔渣对水稻养分吸收及产量的影响

Effect of slog containing silicon on nutrient absorption and yield of rice

采用盆栽试验方法,研究了不同含硅熔渣对水稻养分的吸收和产量的影响,结果表明,在施用氮、磷、钾肥的基础上,增施不同类型的含硅熔渣,可提高水稻中硅和磷的含量,降低根系、茎叶和籽粒中的氮、钾含量,增加水稻对氮、磷、钾、硅的总吸收量。不同含硅熔渣的增产效果差异较大,增产最显著的是铁渣和黄磷炉渣,分别比对照增产43.4%和31.6%,施用含硅熔渣的各处理比对照平均增产19.1%,各处理间的产量经方差分析和多重比较达显著或极显著差异水平。扩散方程、Elovich方程和多项式方程均能很好地描述水稻生长期内水稻对N、P、K、Si的吸收过程,尤以多项式方程拟合最佳。

Effect of sinter containing silicon on the nutrient absorption and yield of rice was investigated with pot experiments. Results showed the applications of different sinter containing silicon improved Si and P contents, lowered the contents of N and K in root, stem leaf and grains, and enhanced the total uptake of N, P, K and Si in rice palnts. There were remarkable discrepancies in effects of different sinter containing silicon on yield increase with the sinter containing Fe and P had the most significant effect. Compared to control, yields were increased 43.4%, 31.6% and 19.1% in the treatments of the sinters containing Fe, or P, or Si respectively. Variance analysis and multiple comparisons indicated that there were significant differences or highly significant differences in the effect on yield of all treatments. Diffusion equation,Elovich equation and polynomial equation could well simulate to N,P,K and Si absorption process of rice at growing stage and effect of polynomial equation was the best.