太原理工大学学报2012，Vol.43Issue(6)：741-744,780,5.
秸秆覆盖厚度对冻融期土壤温度的影响
Effects of Corn Mulch Thickness on Soil Temperature during Freezing-thawing Period
摘要
Abstract
Based on the soil temperature measurement of bare plot and corn straw mulch plots with mulch thickness of 5,10, 15 , 20 and 30 cm during freezing-thawing period, this paper analyzed the influence of corn straw mulch on soil temperature and the relationship between straw mulch thickness and soil temperature change. The results show that the corn straw mulch altered the soil temperature distribution. As the straw mulch thickness increased from 5 cm to 30 cm, the temperature variation of each soil layer and the temperature fluctuation induced by abrupt change of air temperature declined, the lowest soil profile temperature dropped, the lag effect of soil temperature in response to the air temperature variation increased, and the rate of soil temperature change slowed down. With the increase of soil depth, the effects of straw mulch thickness on soil temperature variation and distribution grew weaker gradually. At the depth of 60 cm beneath soil surface, the soil temperatures of 5 straw mulched plots showed no obvious difference. These results provide a basis for applying straw mulch in seasonal freezing-thawing regions.关键词
土壤温度/冻融期/玉米秸秆/覆盖厚度Key words
soil temperature/period of freezing and thawing/corn straw/mulch thickness分类
农业科技引用本文复制引用
邢述彦,刘虎,郑秀清,刘美萍..秸秆覆盖厚度对冻融期土壤温度的影响[J].太原理工大学学报,2012,43(6):741-744,780,5.基金项目
国家自然科学基金资助项目(40472132) （40472132）
山西省自然科学基金资助项目(2012011033-2) （2012011033-2）
