This article explore the relation in such respects as the soil moisture content and relation of respect , type of vegetation and thickness , etc . since surveying setting about of soil moisture content , announce the development characteristic and the law of period changing of the moisture content of the soil in karst area , thus put forward the constructive suggestion to ecological environmental protection of the karst area 本文从土壤含水率的实测着手，探索了土壤含水率与植被类型、土壤厚度等方面的关系，揭示了喀斯特土壤含水率的发育特征与时段变化规律，从而对岩溶地区的生态环境保护提出了建设性意见。
The experiment was conducted to determine the influence of different regulation and control methods of soil moisture , such as plastic film mulching , covering grass under trees , growing grass under trees , irrigating regularly , loosening the soil under trees , on quality of fruit in a non - public nuisance crisp pear garden in the area of old course of yellow river 摘要以45年生酥梨树为试材，分析测定塑料薄膜覆盖、树盘覆草、自然生草、定期灌水、清耕等不同土壤水分管理措施对土壤水分和酥梨品质的影响，结果表明：塑料薄膜覆盖和树盘覆草处理中，土壤含水率比较适宜，且变幅较小，有利于果实生长发育和提早着色，提早成熟，产量和品质较好；其它处理中土壤含水率要么过高，要么过低，且变幅较大，酥梨的果实品质也比较差。
Moreover , there are good fitted power function relationship between thermal conductivity and soil water content , soil water suction and salt concentration . meanwhile , based on the measured data of soil water content and soil temperature distribution under temperature - controlled conditions , according to philip ' s empirical equation , through difference method , the water diffusivity under temperature gradient was calculated , which can be expressed as a power function of temperature 此外，研究表明，导热率与土壤含水率、土壤水吸力、含盐浓度之间均存在良好的幂函数关系；在取得一定温控条件下的土壤水分与温度分布实测资料的基础上，根据philip经验方程，通过差分法计算得出温差作用下的水分扩散率，该参数可表示为温度的幂函数形式。
Because of the unreasonable restriction of actual models , soil water content at the end of the stage that its sensitivity parameter is small is always close to the wilting coefficient , this makes planting risk . to deal with the planting risk of inadequate irrigation schedule , this paper develops a new multi - objective model for inadequate irrigation schedule programming , and uses the staged multi - dimensional fuzzy optimization method to get the decision - making 针对现行非充分灌溉制度优化设计模型中约束的不合理性，致使作物在敏感性指数小的阶段末土壤含水率易趋于凋萎系数，生产中存在风险的不足，本文提出了考虑作物种植风险指标情况下，非充分灌溉制度的多目标优化模型；并采用本文提出的多维多目标动态规划方法进行模型求解。
The testing results showed that the distribution of soil moisture content in filed had great variability , the range of content was between 17 . 5 % to 40 . 5 % . the results also showed that soil water content had different layers in vertical direction , and with the increase of soil depth the soil water content increased first and then decreased 试验表明，土壤水分在农田平面上的分布存在很大的差异，含水率分布在17 . 5 40 . 5之间；土壤水分在截面上的分布上存在分层现象，且随着深度的增加，土壤含水率有先增加后逐渐减少的趋势。
