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当前对红壤的生成和分类的认识,十分混乱。过去,有的强调植被的影响,将红壤分为红壤性生草灰化土、红壤性草甸土、红壤性幼年土;有的分为红色森林土、红色灌木草原土、红色草甸土、红色干旱草原土。1955年全国土壤分类方案中将我国红壤分为砖红壤、红壤和灰化红壤。新近《中国土壤》一书中,把红壤系列分为红壤、砖红壤性红壤(赤红壤)和砖红壤三个土类(在红壤中出现了暗红壤,不见了灰化红壤),它们分别是中亚热带、南亚热带和热带的代表性土壤。从红壤通过过渡型的砖红壤性红壤而到砖红壤,顾名思义可以看出砖红壤化作用是在不断加强。那末什么是砖红壤化作用?具体指标是什么?有没有灰化红壤?这些问题亟待解决,希望能展开讨论。
The current understanding of the formation and classification of red soils is very chaotic. In the past, some emphasized the impact of vegetation, the red soil is divided into red soil sexual grass asher, red soil meadow soil, red soil juvenile soil; some are divided into red forest soil, red shrub grassland, red meadow soil, red Arid steppe soil. In 1955 the national soil classification program will be divided into red soil in China red soil, red soil and ashed red soil. In a recent book “Soil in China”, the red soil series was divided into three types of red soil, red soil of red brick (red soil) and red soil of red brick (dark red soil appeared in red soil, but no red soil was seen), they were Subtropical, subtropical and tropical representative soil. From the red soil through the transitional red soil red brick red soil to red soil, as the name suggests, we can see that the role of brick redification is constantly strengthening. So what is the role of brick red soil? What are the specific indicators? There is no ashed red? These problems need to be resolved, hoping to start the discussion.