| 摘要 |
A lysimeter for collecting soil water which is truly representative of the soil water contained in the soil at selected locations. The lysimeter contains a chamber and a filter section which is a rigid, porous fluoroplastic and through which moisture from the soil surrounding the lysimeter may pass into the chamber. The invention includes the rigid porous thermoplastic resin, a process for making the resin and a process for using the lysimeter to recover soil moisture in the lysimeter chamber.
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