不同类型农耕地地气界面热质传递关系研究  

Heat and Mass Transitive Relation of Different Types of Agricultural Land Interface

作　　者：孔秋婵[1] 陈兰[1] 白海[1] 易美桂[1] 梁玉祥[1] 

机构地区：[1]四川大学化学工程学院,四川成都610064

出　　处：《现代农业科技》2011年第11期274-276,278,共4页Modern Agricultural Science and Technology

基　　金：2011年度北京市农委推广项目

摘　　要：通过对同一时段不同地区农田的实地考察研究和取样分析,获得地气界面形态及热质传递关系现场数据,使用质量守恒定律研究近地空气湿度与土壤中氮磷钾含量及相互关系。结果表明:地空湿度梯度过大是造成土壤退化的主要原因。土壤中的氮磷含量随湿度梯度的增加有正相关性,钾含量有负相关性,但地表温度较高时,氮的含量有所下降。At the close period of time,investigating and field sampling analysis were made in different farmland areas,which obtain the field data of interface configurations and the relations of heat and mass transfer.Mass conservation theorem was used to research air humidity,soil NPK content of perigee,and the interactions between them.Air humidity gradient data showed that excessive is the main reason of causing soil degradation.The nitrogen and phosphorus content correlated with the increasing of humidity,temperature gradient positively,and potassium content has negative correlation,but the temperature of the earth′s surface temperature is higher,nitrogen content declined.

关 键 词：农耕地 地气界面 热质传递 湿度梯度 氮磷钾含量 

分 类 号：S152.8[农业科学—土壤学]