摘要
对不同盐分含量(轻度盐化、中度盐化、重度盐化)的砂壤土进行了秸秆覆盖的模拟试验,结果表明:秸秆覆盖可有效地控制土壤水分的蒸发,从而控制盐分的表聚性,减轻土壤表层的盐化程度,从而达到改良盐渍土的目的。
Simulation experiment of straw mulch was made on different soil salinity (mildly salinity medium salinity,strongly salinity)of silt loam soil The goal of this research are pursuing effects and efficiency of reducing soil water evaporation by straw mulch and trying to find a new way of amelioration of coastal saline soils The results indicate that straw mulch can lessen soil water evaporation significantly With the quantity of straw increasing,from 1 5t/hm 2 to 6 75 t/hm 2,the evaporation of soil water is decreasing,from 40% to 65% The accumulation of salt in top soil had similar trends with soil water evaporation Comparing to no-mulch,the soil salt content at mulch 1 5 t/hm 2 decreased 20%,at mulch 6 75 t/hm 2 decreased 40% The results indicate the efficiency of mulch on medium salinity soil is highest,mildly soil is greater than strongly salinity soil
出处
《山东农业大学学报（自然科学版）》
CSCD
2000年第1期38-40,共3页
Journal of Shandong Agricultural University：Natural Science Edition
关键词
秸秆覆盖
土壤水分蒸发
土壤盐分表聚
straw mulch
soil water evaporation
top enrichment of soil salt
