Four semlpermeable film preservatives, which are suitable for fruit surface coating and characterized by the venlitation and the decrease in water evaporation, have been fabricated.
研制的几种涂膜保鲜剂，具有半透性膜的特性，覆盖于果实表面，既可减少果实水分的蒸发，又能保持一定的通透性。
For watershed scale, the SWC can increase water storage and evaporation, meanwhile, it can decrease runoff.
水土保持措施在流域尺度上表现为增加流域贮水、蒸发，但使流域径流有所减小。
For watershed scale, the SWC can increase water storage and evaporation, meanwhile, it can decrease runoff.
水土保持措施在流域尺度上表现为增加流域贮水、蒸发，但使流域径流有所减小。
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