人工调控下库布齐沙漠沙生植物用水特征分析

Analysis of Water Use Characteristics of Sandy Plants in Kubuqi Desert under Artificial Control

荒漠化治理是我国现在和未来生态文明建设和绿色发展的方向。结合我国第七大沙漠——库布齐沙漠的沙生植物种植成功案例,初步探索分析适合我国沙漠地区生长的沙生植物的用水特征。结果表明:人工调控下沙生植物一般进行3 a灌溉培育,以便保证其成活率;沙柳的灌水定额为25.2 m3/hm2,种植后随着沙柳根系的生长,从土壤中吸收水分的能力逐渐增强,灌水次数逐年减少;大白柠条、甘草、黑枸杞的灌水定额、灌溉次数基本相同,紫穗槐的用水定额较以上3种沙生植物的用水定额略大。该分析结果可为我国开展荒漠化治理提供借鉴。

The desertification control is the direction of ecological civilization construction and green development in our country now and future. Through the successful cases of sandy plants cultivation in the seventh largest desert of our country,Kubuqi Desert,water characteristics of sandy plants in desert areas of our country were preliminarily explored and analyzed. The results showed that： the artificial regulation sandy plants were generally irrigated in three years in order to ensure the survival rate; the irrigation quota of salix psammophila was 25.2 m^3/hm^2,then with the growth of the root,the water absorbing ability of salix psammophila from soil gradually increased,and irrigation＇s frequency decreased year by year; the irrigation quota and irrigation times of caragana korshinskii,licorice,black wolfberry were basically the same,while the irrigation quota ofamorpha fruticosa was slightly larger than those of the above three species of sandy plants. The results can provide reference for desertification control in our country.