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四川赤色盆地主要为紫色土壤分布区域,紫色土壤母质含有丰富的磷、钾等矿质营养元素.根据西南农学院土壤农化系分析资料,重庆层紫色页岩区土壤化学成分全磷量为0.39%,全钾为3.10%,重庆层紫色砂岩全磷量为0.25%,全钾亦颇丰富.因此,研究如何通过土壤微生物作用变难溶性的养分为可溶性,供植物吸收利用,对提高土壤潜在肥力具有重要意义;另一方面,研究就地取材利用“石骨子”为原料,制造新型硅酸盐细菌肥更具有现实意义.苏联学者E.M.尼斯捷洛娃等亦试用岩石作肥料,接种细菌肥,对作物产量提高表现了良好效果.四川个别地区群众亦有用
The red soil in Sichuan Basin is mainly purple soil and the purple soil parent material is rich in phosphate, potassium and other mineral nutrients.According to the analysis data of agronomy Department of Southwest Agricultural College, the chemical composition of total phosphorus in the purple shale area of Chongqing is 0.39% , Total potassium is 3.10%, total phosphorus in layer purple sandstone in Chongqing is 0.25% and potassium is also quite abundant.Therefore, how to make insoluble nutrients available for soil absorption and utilization by soil microorganisms and to improve the soil potential fertility Is of great significance.On the other hand, it is more practical to study the local use of “stone bones” as raw material to produce new silicate bacteriological fertilizers.The Soviet scholar EM Neshilova also tried rock as fertilizer and inoculated with bacterial fertilizer, The crop yields have shown good results, and the masses in some areas of Sichuan are also useful