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Shvoong Home>Science>Agronomy - Agriculture>Use Effect and Soil Moisture Change Rule in Level Trench on Separated Slope Summary

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Use Effect and Soil Moisture Change Rule in Level Trench on Separated Slope

Article Abstract by: TsingHua    

Original Author: Journal of Shanxi Agricultural Sciences
This abstract was translated from 隔坡水平沟土壤水分变化规律及利用效果
The experiment was condusted to study the water efficiency and soil moisture change rule in separated level trench
in 2001～2003.The result showed:no matter the year rain abundant or deficient, there was an increase of water in 0～200cm soil layer in separated level trensh and resulted an increase of 92.0mm rain in maize field, and 132.1mm in potato field;soil water of the level trench increased 50.1mm in rain abundant year than in rain average and dry years; In comparison with the slope farming, there was an increase of 50.4mm of water in 0～200cm soil Layer with an increase rates of 1.53% for soil moisture. In year of uneven rain distribution,unregular change of soil moisture levels was observed.In comparision with the slope farming,an decrease of 18.6mm of water in 0～200cm soil layer in seedtime for serious spring-dry in less rain year; In comparision with less rain year, a decreasing rate of 3.4%～4.5% in 0～200cm soil moisture of level trench maize field for serious summer-dry in rain abundant and average year and an decrdase rate of 2.99%～3.25% in potato field. After harvest whole corn stalk mulching to separated level trench could reduce soil water disappear and alleriate the spring-dry.To determine before soil freezing and seedtime, an increase rate of 2.11% and 1.19% in level trench in mulched field compared with unmulched field. During in experiment 2001～2003 farming an increase rate of 100.2% of maize yieid per unit area and increase of 9.3kg/mm·hm~2 compared with slop.
Published: July 20, 2005
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