秸秆条施对土壤水分运移分布的影响

发布时间：2018-04-30 15:16

本文选题：秸秆 + 土壤水分　；参考：《灌溉排水学报》2017年01期

【摘要】：通过室内试验,研究了秸秆条施深度对一维垂直入渗情况下土壤水分入渗和分布的影响。结果表明,1秸秆条施深度对累计入渗量有影响,相同入渗时间下不同条施深度的累计入渗量大小顺序为:深6 cm宽4 cm深4 cm宽4 cm深2 cm宽4 cm不施秸秆;2秸秆条施深度对垂直湿润锋运移距离大小顺序与累积入渗量大小顺序相同;3不同秸秆条施深度的土壤含水率的分布规律相似,土壤含水率等值线在秸秆条施附近近似呈半圆形,在湿润锋附近近似为直线,且距离秸秆条施处越远,土壤含水率分布曲线越密集;相同入渗时间下,深6 cm宽4 cm处理土壤平均含水率最高,其次是深4 cm宽4 cm处理。秸秆条施深度对于土壤水分运移分布有影响。
[Abstract]:The effects of straw application depth on soil moisture infiltration and distribution under one dimensional vertical infiltration were studied in laboratory. The results showed that the depth of straw application had an effect on the cumulative infiltration. Under the same infiltration time, the order of accumulative infiltration amount of different application depth is as follows: depth 6 cm wide 4 cm deep 4 cm wide 4 cm deep 2 cm wide 4 cm no straw application depth on vertical wet front migration distance order and accumulation The distribution law of soil moisture content of different straw application depth was similar. Soil moisture contours were approximately semicircle near straw application, and were approximately straight line near the wetting front, and the farther away from straw application, the denser the distribution curve of soil moisture content was, under the same infiltration time, The average soil moisture content was the highest in the treatment of depth of 6 cm and 4 cm, followed by the treatment of 4 cm in depth and 4 cm in width. The depth of straw application has an effect on soil moisture migration and distribution.
【作者单位】：河北工程大学水电学院;河北省唐山市曹妃甸区农业畜牧水产局;
【基金】：河北省科学技术研究与发展项目(14227002D) 国家自然科学基金项目(50579064)
【分类号】：S152.7

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