东北主要旱地耕作土壤冻融环境分析

从气候环境方面讨论了东北地区主要旱地耕作土壤的冻融环境，通过分析年平均气温、1月气温、小于0℃日数、气温年较差、暖季升温表明，以上因素对黑土的冻融作用影响比较大，对黑钙土和白浆土的冻融作用影响次之，对棕壤土和褐土的冻融作用影响最小；年平均降水和秋季后期降水对棕壤土的冻融作用影响比较大，对黑土和白浆土的冻融作用影响次之，对黑钙土和褐土的冻融作用影响相对较小；草甸土分布极为广泛，各项指标都随纬度变化而不同，草甸土遭受的冻融作用也随纬度变化而不同。

Freezing-Thawing Condition of Main Dryland Farming Soil Areas in Northeast China

The paper discussed the freezing-thawing condition of main dryland farming soil areas in northeast China, annual mean temperature, January temperature, days of temperatures below 0℃, annual temperature range, temperature rising in spring was used to analyze the impact on freezing-thawing function. The results showed: the above factors have great impact of phaeozem, less impact of chernozem and white pulp soil, least impact of brown soil and cinnamon; annual mean precipitation, post-autumn precipitation was used to analyze the impact on freezing-thawing function, the results showed: the above factors have great impact on freezing-thawing function of brown soil, less impact of phaeozem and white pulp soil, least impact of chernozem and cinnamon. Meadow soil is distributed widely, these factors are different with the latitude difference.