| 罗金明,邓伟,张晓平,李秀军,孙广友.松嫩平原西部1～5年苏打碱化稻田的渗透性研究[J].干旱地区农业研究,2008,(5):134~138 |
| 松嫩平原西部1～5年苏打碱化稻田的渗透性研究 |
| Infiltration property of 1～5 year sodic alkaline paddy in west Songnen Plain |
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| DOI：10.7606/j.issn.1000-7601.2008.05.28 |
| 中文关键词: 苏打碱土 染料指示剂 离子穿透实验，渗透特征 |
| 英文关键词:soda alkali soil dye tracer breakthrough experiment infiltration property |
| 基金项目:中科院重大创新项目（KZCX1-SW-19-02） |
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| 中文摘要: |
| 运用亚甲基蓝着色和溴离子穿透实验两种方法，对连续种稻1年和5年的苏打碱土0～30 cm的透水性进行分析。结果表明：碱化稻田耕作层的质地和结构发生明显变化，并且土壤溶液下渗的深度和速率有明显的增加；1年稻田中染料可以下渗到20 cm；而5年稻田则可以渗透到整个耕作层。溴离子的穿透实验表明：经过16 h后，入渗溶液只有82％溴离子渗出1年稻田的土柱；在5年稻田的土柱中，溴离子渗出浓度/入渗溶液浓度只需8 h即可达95％，离子穿透过程近似达到平衡。 |
| 英文摘要: |
| By applying Brilliant Blue FCF as dye tracer and bromide ion for breakthrough test, the infiltration property of sodic alkaline soil after 1 year and 5 years rice cultivation practice were studied. The results showed that the texture and structure of cultivation layer had significant changes after continuously rice-growing practice. Influenced by physical property of cultivated layer, the penetration depth and infiltration rate of soil solution increased significantly in contrast with control. Dye could infiltrate to 20 cm in 1-year rice plot and the whole cultivated layer after 5-year rice plot. The breakthrough experiment revealed that only 82% influent could penetrate the soil cores in 1-year paddy after 16 h, nevertheless, 95% after 8 h in cores of 5-year paddy, to reach balance with influent approximately. |
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