soil freezing and thawing 土壤冻融
freezing and thawing soil 冻融土壤
Based on 12 years（19942006） fields experiment, by analyzing the yearly variation of air temperature, soil temperature, moisture and salt and its statistic eigenvalue, the law of freezing-thawing soil water-heat-salt transfer under filed condition is the farther analyzed.
在12年（19942006年）田间试验的基础上,通过对多年冻融期间的气温、地温、水分和盐分之间的年际变化关系及其统计特征的分析,系统分析了自然条件下冻融土壤水热盐迁移规律。
参考来源 - 冻融土壤水热盐运移规律及其SHAW模型模拟研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Based on soil field infiltration test, the effects of corn straw mulch on freezing-thawing soil infiltration capacity are discussed.
基于大田土壤入渗试验，讨论了玉米秸秆覆盖对土壤冻融特点及入渗能力的影响。
During the period of thawing in spring, water in soil comes from freezing water in the previous year.
春季解冻期的土壤水则来源于上一年的土壤封冻水。
The effect of alternative freezing and thawing can enhances the activities of some soil enzymes greatly, such as phosphatase, nitrate reductase and nitrite reductase.
冻融交替作用明显地增强土壤中磷酸酶、硝酸还原酶和亚硝酸还原酶的活性。
应用推荐