【摘要】 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。更多还原

【Abstract】 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.更多还原