摘要
灌淤土是指在干旱的气候条件下,人为灌溉,施肥耕作等措施形成的灌淤土层的厚度在50cm以上的土壤。在“中国土壤系统分类(第一次方案)”中,灌淤土属于人为土纲,是旱耕人为土亚纲中的一个土类。目前,国际上对人为土壤的研究是一个薄弱环节,但随着生产和科学的发展,人类对土壤的干预作用越来越大,对人为土纲的研究也会越来越引起重视。我国以前对水耕人为土(水稻土)的研究较多,但对旱耕人为土的研究很不够。从实际意义上来说,灌淤土是我国北方干旱区最重要的基本农田,其分布地区又是我国最重要的粮食基地之一,在我国粮食紧张的情况下。
Irrigation—warping soil refers to the soil that has warpic epipedon with thickness of more
than 50cm, which is formed by irrigation, fertilization and cultivation under arid conditions. The main formation processes of the soil are irrigation with water containing sand and using a lot of composts. The soil distributes in the northwest region of China, mainly in the Yinchuang Plain of Ningxia, the Elbow plain of Inner Mongolia, the Hexi Corrider of Gansu, the Tarim and Zhunggar Basin in Xingjiang, the valley of the Huangshui River, etc.. According to different intensities and kinds of anthropic effects, as well as aditional soil genetic processes, the soil could be divided into six subgroups: haplic, mellowic, hydragric aquic, salific and umbric irrigation—warping soil, and in term of its characteristics, the rational utilization of the soil wasproposed.
出处
《干旱区研究》
CSCD
北大核心
1991年第4期1-9,共9页
Arid Zone Research
关键词
灌淤土
土壤
形成
分类
irrigatoin—warping soil, anthropic soil.
