中子水分仪在旱塬地玉米农田土壤水分研究中的应用  

The Application of the Neutron Probe in the Research of Farmland Soil Moisture of Dryland

作　　者：晋凡生[1] 萧复兴[1] 

机构地区：[1]山西省农业科学院旱地农业研究中心,太原030031

出　　处：《水土保持研究》2000年第4期65-66,88,共3页Research of Soil and Water Conservation

基　　金：国家"九五"科技攻关项目黄土高原水土流失区农业综合发展技术研究第6专题--晋西残塬区高产型农业综合发展研究(96-004-05-06)的内容。

摘　　要：采用中子微区模拟装置测量旱地玉米农田棵间蒸发的结果表明 ,本试验装置实用可行。晋西棵间蒸发量占降水量 (5 10 m m)的 5 4%以上 ;棵间蒸发与蒸腾的比值同叶面积指数呈负相关 。The device of the neutron micro zone model was applied to inspect the evaporation capacity among plants in dry land corn farmland. The results showed that the device was practical. In the western region of Shanxi province the evaporation capacity among plants accounts for more than 54% of the annual precipitation rain capacity(510mm). The ratio of evaporation to transpiration among plants was negatively correlated with leaf area index, and yield was positively correlated with crop transpiration.

关 键 词：中子微区模拟装置 农田棵间蒸发 叶面积指数 作物蒸腾 

分 类 号：S152.7[农业科学—土壤学] S124[农业科学—农业基础科学]