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保水剂种类及含量对土壤水分蒸发的影响(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2008年04期
Page:
95-97
Column:
研究论文
publishdate:
2008-07-20

Article Info:/Info

Title:
Effects of water-retaining-agents species and concentrations on water evaporation quantity of soil
Article ID:
1000-2006(2008)04-0095-03
Author(s):
WANG Yu YE Jian-ren*
College of Forest Resources and Environment Nanjing Forestry University, Nanjing 210037, China
Keywords:
Water-retaining-agents Water evaporation quantity of soil Water stress
Classification number :
S714.2; S152
DOI:
10.3969/j.jssn.1000-2006.2008.04.021
Document Code:
A
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.

References

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Last Update: 2013-05-20