Acta Agrestia Sinica

›› 2006, Vol. 14 ›› Issue (3): 295-297.DOI: 10.11733/j.issn.1007-0435.2006.03.020

Previous Articles     Next Articles

Research on the Soil Water and Salt Dynamics of the Purple Medic Grassland and the Mode of an Optimal Ecological Irrigation Control in the Qinwangchuan Irrigated Regions, Gansu Province

CHENG Zi-yong, ZHANG Zi-he   

  1. 1. Gansu Agriculture University, Lanzhou, Gansu Province, 730070, China;
    2. Key Laboratory of Grassland Agro-Ecosystems, Lanzhou University and Ministry of Agriculture, Lanzhou, Gansu Province, 730020, China
  • Received:2006-02-14 Revised:2005-05-14 Online:2006-08-15 Published:2006-08-15

甘肃秦王川灌区苜蓿草地土壤水盐动态及其生态灌溉调控模式

成自勇, 张自和   

  1. 1. 甘肃农业大学, 兰州, 730070;
    2. 兰州大学农业部草地农业生态系统学重点开放实验室, 兰州, 　730020
  • 作者简介:成自勇(1956- ),男,博士,教授,研究方向为水工程与生态环境,E-mail:chengziyong@tom.com
  • 基金资助:
    教育部世行贷款高等理工科教改项目(1282B12071)

PDF

Abstract: Based on the concept of ecological irrigation,westudied the physiological influence of soil water and saltdynamics on the purple medic grassland of the Qinwang chuan Irrigation Region and patt erneda mode of ecological irrigat ion cont rol in t he region,in consideration of the grassland soil water and salt stress,and the ecological and economical irrigation quota for the harvest of purple medic during its early anthesis.The present paper presents an optimal ecological irrigation system in the aridregion that saves water and achieves economic efficiency,a harmonic ecological irrigation syst eminsures irrigation water-photosynt hesis-yiel dinpasturage irrigation,and an innovative harmonious ater and salt-grass-ecosystem.

Key words: Qinwangchuan Irrigation Region, Purple medic, Dynamics of soil water and salt, Eco-physio-logical characteristics, Water production functions, Ecological irrigation control

摘要： 以“生态灌溉”的思路研究秦王川干旱灌区苜蓿草地土壤水盐运移规律及其生态灌溉调控模式;苜蓿在水盐等逆境胁迫下的生理生态特征、生育阶段水分生产函数及生态灌溉制度;应用系统工程方法对灌区苜蓿(Medicago sativa)种植结构及经济效益进行优化配置;构建灌溉水-光合作用-生物产量转化效益及土壤水盐-牧草作物-灌区生态系统协调优化的生态灌溉体系。

关键词: 秦王川灌区, 苜蓿, 土壤水盐动态, 光合生理生态, 水分生产函数, 生态灌溉调控

CLC Number: