| 李取生,吴乐知,刘长江.中度苏打盐碱化土壤微咸水淋洗改良利用模式研究[J].干旱地区农业研究,2006,(4):164~167 |
| 中度苏打盐碱化土壤微咸水淋洗改良利用模式研究 |
| Amelioration model of medium saline-alkali soil by leaching with mildly saline groundwater |
| |
| DOI：10.7606/j.issn.1000-7601.2006.04.35 |
| 中文关键词: 中度苏打盐碱化土壤 微咸地下水 淋洗改良 技术模式 松嫩平原 |
| 英文关键词:medium saline-alkali soil mildly saline groundwater leaching amelioration model Songnen Plain |
| 基金项目:国家“十五”重点科技攻关课题(2004BA508B05)； 暨南大学引进优秀人才科研启动基金 |
|
| 摘要点击次数: 298 |
| 全文下载次数: 308 |
| 中文摘要: |
| 通过田间试验,研究了用微咸地下水淋洗改良中度苏打盐碱化土壤对土壤盐碱含量变化和作物产量的影响。结果表明:经过2 a 700 mm淋洗处理和400 mm淋洗处理,0~1.2 m深中度盐碱化土壤所有层位的饱和提取液电导率(ECe)均下降到3.0 dS/m以下,钠吸附比(SARe)下降到13以下,土壤得到完全改良。700 mm淋洗处理和400 mm淋洗处理的改良效果没有显著差别。400 mm淋洗分2 a完成比1 a完成的淋洗效果更佳。两个淋洗处理高粱产量分别达到5 920 kg/hm2和5 355 kg/hm2,玉米产量达到6 639 kg/hm2和5 872 kg/hm2,接近当地非盐碱地的正常产量水平。 |
| 英文摘要: |
| The effects of leaching with mildly saline groundwater on salinity and crop yield in medium saline-sodic soils were evaluated in a two-year field experiment.When applied with 700 mm and 400 mm leaching water,the electric conductivity(ECe) of all the soils at 0～1.2 m depths decreased to less than 3.0 dS/m,and the sodium absorption ratio(SARe) decreased to less than 13,indicating that the soils were ameliorated completely.The soil salinity changes were not significantly different between 700 mm and 400 mm leaching treatments.The 400 mm leaching quota applied in two years was better than that applied in one year.The sorghum yields of these two leaching treatments were as high as 5 920 kg/hm2 and 5 355 kg/hm2,and the corn yields were as high as 6 639 kg/hm2 and 5 872 kg/hm2,which were much closed to the average yields on local non-saline soils. |
| 查看全文 查看/发表评论 下载PDF阅读器 |