丘陵旱地农—桐生态工程模式的生态效应分析  

Ecological effects of the ecological engineering model "crop-paulownia" on dry-land fields in hilly

作　　者：方萍[1] 陈聿华[2] 

机构地区：[1]同济大学环境科学与工程学院污染控制与资源化国家重点实验室,上海200092 [2]华中农业大学农学系,湖北武汉430070

出　　处：《干旱地区农业研究》2006年第3期72-77,共6页Agricultural Research in the Arid Areas

基　　金：湖北省重点攻关项目<湖北省生态农业模式与示范>

摘　　要：对“泡桐-玉米-小麦-棉花”组合的鄂中丘陵旱地“农-桐”生态工程模式的生态效益进行分析，结果表明，与传统的“小麦-芝麻”模式相比，该模式对丘陵旱地农田的风速和土壤水分状况均有显著地改善，能够使风速降低27．70％～45．60％、使土壤中的水分含量在严重干旱的季节平均提高2．10％。另外，该模式对年生长季节的利用增加了132％～141％；对年活动积温（≥10℃）的利用率增加了139．80％～148．90％，这为我国广大丘陵干旱区生态环境的改善提供了一种有效的生态工程技术模式。The ecological effects of the dry-land ecological engineering model ＂Paulownia- maize- wheatcotton＂ used in hilly area of central Hubei Province were studied. The results show that, compared with the traditional cultural model of ＂wheat-sesame＂, this model can remarkably improve both the micro-climate of wind and the soil water conditions of the field, reduce the wind velocity 27.7% -45.6%, and increase the soil water content 2.10% averagely in the serious drought season. In addition, this model can increase the organisms growth time and the accumulate temperature （≥10℃） by 132% - 141% and 139.80% - 148.90% yearly, respectively. It provides an efficient engineering model for improving ecosystem conditions of large dry-land fields in hilly areas in China.

关 键 词：泡桐 丘陵旱地 生态工程 生态效益 

分 类 号：S181[农业科学—农业基础科学]