云南省水稻增施硅肥肥效及优化施肥量研究

Study on Efficiency of Increase Manuring Silicon Fertilizer and Optimization of Manuring Level to Rice in Yunnan

通过全省近１０ａ（１９８８ ～１９９９）硅肥在水稻上施用的结果及土壤化验资料分析，研究了土壤有效硅、硅肥用量与硅肥肥效的相关性，提出了水稻增施硅肥的土壤硅素的丰缺指标及优化施肥量。

After having analyzed the results of manuring silicon fertilizer to rice and composition data of soil samples for the years(1988～19999)in Yunnan,relativity between effective silicon in soil,manuring levels and efficiency of silicon fertilizer was studied.Abundance and shortage index of silicon in soil for increasing silicon fertilizer to rice was proposed,as well as optimization of manuring levels.