甘肃河东玉米地土壤温湿变化特征研究  

Study on Change Characteristics of Soil Temperature and Humidity in Corn Field in the East of the Yellow River in Gansu

作　　者：姚小英[1,2] 姚茹莘 田广旭 强玉柱 

机构地区：[1]中国气象局兰州干旱气象研究所,甘肃省干旱气候变化与减灾重点实验室,中国气象局干旱气候变化与减灾重点开放实验室,甘肃兰州730020 [2]甘肃省天水市气象局,甘肃天水741000 [3]甘肃省天水市石马坪中学,甘肃天水741000 [4]甘肃省陇南市气象局,甘肃武都746000

出　　处：《安徽农业科学》2010年第24期13200-13202,共3页Journal of Anhui Agricultural Sciences

基　　金：甘肃省气象局"十人计划"项目;科技部科研院所社会公益研究项目(2005DIB3J100)

摘　　要：利用甘肃河东地区代表站玉米地土壤含水量、地温、降水资料,运用统计模拟方法,分析了土壤贮水量、温度的变化特征及水热耦合效应。结果表明,甘肃河东地区玉米地100cm土层的贮水年变化呈抛物线状,6月上旬至中旬土壤贮水量达到最低值。地温自20世纪70年代以来呈上升趋势,其中冬季上升幅度最为明显。水热交互作用与土壤含水量的变化有显著相关关系。一年内玉米地土壤温湿变化特征表明,土壤贮水量主要有2个低值阶段:5～6月及7～8月,不同时间温湿匹配对玉米生长造成不同影响。Based on the datum of soil water content, ground temperature and precipitation in representative station in corn field in east of the Yellow River in Gansu,the change characteristics of soil water content and the temperature and the hydro-thermal coupling effect were analyzed by using statistics analogy method. The results indicated that the annual variation of 100cm soil layer＇s water content assumed a paracurve and the soil water storage quantity achieved the minimum value in the first and middle ten days in June. The ground temperature assumed the trend of esealatian since 1970s and the increase was the most obvious in winter. The hydro-thermal correlation and soil moisture variation had the remarkable correlation. The change characteristic of the soil temperature and moisture in corn field in one year indicated that the soil water storage quantity mainly had two low value stages： May to June and July to August,the match of soil temperature and moisture during different time had different influences on the corn growth.

关 键 词：甘肃河东 土壤温湿变化 玉米生长影响 

分 类 号：S152.7[农业科学—土壤学]