To view this page ensure that Adobe Flash Player version 10.2.0 or greater is installed.
Either scripts and active content are not permitted to run or Adobe Flash Player version 10.2.0 or greater is not installed.
姓名: 单位: 联系方式:
每年都有大批的良田变成荒漠,土壤荒漠化的问题已经越来越严重,我们必须对荒漠进行人为的改造,使其恢复原来的面貌。本片讲述了土壤荒漠化的原因以及现状,并对荒漠化的改造提出了许多宝贵的建议。