JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2008, Vol. 32 ›› Issue (04): 95-97.doi: 10.3969/j.jssn.1000-2006.2008.04.021

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Effects of water-retaining-agents species and concentrations on water evaporation quantity of soil

WANG Yu, YE Jian-ren*   

  1. College of Forest Resources and Environment Nanjing Forestry University, Nanjing 210037, China
  • Online:2008-08-18 Published:2008-08-18

Abstract: Based on the simulation tests, effects of water-retaining-agents and its concentrations on moisture evaporation in the soil were studied in lab. The results showed that moisture evaporation treated by different species of waterretaining-agents increased firstly, and then declined with water stress degree time extended. The moisture-preserved capacity of soil, treated by water-retaining-agents, became stronger than that without water-retaining-agents. Among all water-retaining-agents, the effect of " Kehan 98" was the best in reducing the evaporation during the whole process. Among 4 water-retaining-agents, the effect of treatment of 0. 5%and 0. 3%were better than the others. On the contrary, water-retaining-agents in high concentration was against moisture-preserved capacity in soil. The results showed that the water-retaining-agents could improve strong the moisture-preserved capacity in soil effectively. Only right concentration could make the water-retaining-agents work adequately.

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