PROBLEM TO BE SOLVED: To provide a surface layer suction leaching device for removing a large amount of salts by a small amount of water, from salts-accumulated soil, without letting salts accumulated on a soil surface layer flow into lower layer soil, or collecting soil in place, free from the need of troublesome regenerative work, and removing salts inexpensively, and to provide a method for suction leaching a surface layer.SOLUTION: A surface layer suction leaching device cover 10 can be firmly attached to a soil surface accumulated with salts, by inserting the pointed lower end of the cylinder 11 of the surface layer suction leaching device cover 10 into the soil 51. A water supply tank 21 supplies water to the surface layer suction leaching device cover 10 through a water hole 121, and supplied water becomes soil water in which salts in soil 51 in the surface layer suction leaching device cover 10 are dissolved. A vacuum pump 32 sucks the soil water through the water hole 121 and discharges to a drainage tank 31.COPYRIGHT: (C)2012,JPO&INPIT【課題】土壌表層に集積した塩を下層土壌に流下させることなく、原位置にて土壌を採取することなく、少量の水で多量の塩類を塩類集積土壌から除去することができ、面倒な再生作業を必要とせず、さらに安価に除塩できる表層吸引溶脱装置および表層吸引溶脱方法を提供すること。【解決手段】表層吸引溶脱装置用カバー10は、表層吸引溶脱装置用カバー10の筒11の尖っている下端を土壌51中に挿入して、塩類が集積した土壌面に表層吸引溶脱装置用カバー10を密着させることができる。給水タンク21は、水用孔121を介して表層吸引溶脱装置用カバー10内に水を供給し、供給された水は、表層吸引溶脱装置用カバー10内の土壌51中の塩類等を溶かした土壌水となる。バキュームポンプ32は、水用孔121を介して土壌水を吸引して、排水タンク31へ排出する。【選択図】図1
