地膜覆盖棉田土壤温度的变化动态及其模拟研究

Studies of the Variation Trends of Soil Temperatures and Its Models on Film-Mulching Cotton

在大田试验研究资料基础上，采用统计回归及曲线模拟的方法，对地膜覆盖及露地棉田土壤温度的时序变化、垂直变化，地膜覆盖棉田的土壤增温效应及土温变化动态同主要气象因子的关系进行了深入的分析，建立了有关的数学模型。并对两种种植方式的土壤温度的变化作了比较研究。

Based on the data of field experiment researches,the seauent variation and verticalvariation of soil temperatures in film-mulching and non-mulching cotton field,and the vari-ation of effect of increased soil temperture in film-mulching cotton field and the relationshipsbetween cotton field soil temperature and main meteorological factors were studied by themethods of Curve modeling and progressive regressions,The relative mathematical models wereestablished. The variation of soil temperature under the two cultivating ways also compared.