论文部分内容阅读
通过田间试验研究了在白浆土上施用生物硅肥的对土壤肥力的影响。试验结果表明:生物硅肥的施入,降低了土壤中水溶性硅的含量,提高了活性硅、无定形硅和有效硅的含量,可能原因是由于硅素的施入,促进了Al(OH)3和Fe(OH)3沉淀对水溶性硅的吸附,促进了生物硅肥中活性硅的解析和溶解,促进了硅酸凝胶与土壤还原铁锰生成混合凝胶;生物硅肥的施用促进了土壤氮的矿化,降低了土壤磷的有效性,提高了土壤PH值,而对土壤有效钾的含量没有明显的影响。
Field experiments were conducted to study the effects of applying biosilica on soil fertility on Albic soil. The results showed that the application of biosilica reduced the content of water-soluble silicon in soil and the content of active silicon, amorphous silicon and effective silicon. The possible reasons were that Al (OH) 3 and Fe (OH) 3 precipitate on the adsorption of water-soluble silicon, and promote the analysis and dissolution of active silicon in bio-silica fertilizers, and promote the formation of mixed gel of silicic acid gel and soil-reduced iron and manganese; The mineralization of soil nitrogen decreased the availability of soil phosphorus and increased the soil pH, but had no obvious effect on the content of soil available potassium.