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以啤酒厂过滤助剂——废硅藻土废弃物为研究对象,通过将废硅藻土施入土壤,模拟田间淋洗的方法对废硅藻土改善土壤保肥性能进行研究.用不同质量的废硅藻土与土壤混合,分析其对氮磷肥料的保肥效果的影响.实验证明,废硅藻土用量小于5.2%时,随废硅藻土百分含量的增加,土壤淋出液中的氮磷含量显著降低;但是废硅藻土的含量大于6.0%,随加入废硅藻土含量的提高,淋洗液中氮磷含量没有显著差异.废硅藻土对不同的外来肥料具有较好的解吸和吸附特性,具有较好的保肥供肥效果.结论:废硅藻土对改善土壤的保肥能力具有显著作用,废硅藻土用于改善土壤保肥性的合理用量为土壤含量的5.2%～6.0%.
Aiming at the waste filter of the brewery-waste diatomite, the waste diatomite was applied to the soil by simulating the leaching process of waste diatomite, Of waste diatomaceous earth mixed with soil and analyzed its effect on the effect of nitrogen and phosphorus fertilizers.Experiments proved that when the amount of waste diatomite is less than 5.2%, with the increase of the percentage of waste diatomite soil leachate , But the contents of waste diatomaceous earth were more than 6.0%. There was no significant difference between the content of nitrogen and phosphorus in the eluent when the content of waste diatomite was increased.The waste diatomite had Better desorption and adsorption characteristics, with better fertilizer and fertilizer effect.Conclusion: Waste diatomite to improve soil fertility has a significant role, waste diatomite to improve the soil fertility of a reasonable amount of Soil content of 5.2% ~ 6.0%.