| 摘要 |
A device for determination of air permittivity of soil in field environment comprises a balloon on which a nipple is placed, a manometer, valve and reducer, this is connected by means of a tee-element and low pressure oxygen hoses to container for soil. M.Dragan’s probe is used, this is equipped with a metal rod with a handle, a cup with opening for air flow, a ledge for container for constant depth of cup penetration to the surface of soil and is connected to a separate low pressure manometer. |
