| 摘要: |
| 【目的】 探讨硫磺对盐碱土的改良效果。【方法】 以不施肥（CK0）、施N、P（CK1）、施石膏（CK2）为对照，在施入N、P的基础上，分别施入75，150，225 kg/hm2硫磺，通过盆栽试验和大田试验，研究硫磺对宁夏平罗和陕西渭南地区盐碱地土壤微生物种类和含量及pH值和EC值的
影响。【结果】 盐碱土施入硫磺后微生物活性显著提高，微生物含量和种类均明显增加，pH值降低，EC值增加。硫磺对宁夏平罗碱性较大盐碱土各项指标的改善幅度均大于陕西渭南地区碱性较小而含盐量较高的土壤。【结论】 硫磺对盐碱土具有明显的改良作用，且对碱性较大的盐碱土的改良效果尤佳。 |
| 关键词: 硫磺 盐碱土 微生物区系 pH值 EC值 |
| DOI： |
| 分类号: |
| 基金项目:日本COMSO石油株式会社与西北农林科技大学合作项目“中国黄土高原土壤改良” |
|
| Study on microflora in the remediation of saline-alkali soil by addition of Sulfur |
|
|
| Abstract: |
| 【Objective】 The study was done to study the effect of adding sulfur on amendment of the saline-alkali soil in Pingluo,Ningxia province and Weinan in Shaanxi province.【Method】 We studied the changing rules of microflora,the soil pH value and EC value both in pot experiment or field experiment.The control treatments were original soil (CK0),adding NP fertilizer (CK2) and adding CaSO4·2H2O (CK2).The treatment was on the basis of NP fertilizer,adding 75,150,225 kg/hm2 sulfur respectively.【Result】 When sulfur was added to the saline-alkali soil,the activity of microorganism was enhanced significantly,both quality and variety of the microorganism increased,the pH values decreased in soil,and the EC value increased.It showed that the effect of the sulfur on the alkaline soil in Ningxia Pingluo is better than that on the saline soil in Weinan Shaanxi.【Conclusion】 After adding sulfur to the soil,the remediation effect is significant in a positive way,especially in alkaline soil. |
| Key words: sulfur saline-alkali soil microflora pH value EC value |
