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1.安徽省的白土主要集中分布在江淮之间的丘陵地区和皖南东部的广德、宁国、南陵一带。白土的形态和江苏省的完全不同。白土层不是夹在土壤剖面的中间,而是位于最上层。白土最重要的生产特性是表土层粉砂含量较高,带水耘田易澄板,同时吸收容量较低,不保肥。2.和江苏省的白土不同,安徽省白土的白土层是一个有机质和作物营养元素含量较高的土层,但是土壤非常的缺磷。紧接着白土层的底部是一个吸收容量较高、水解性酸含量较低和盐基含量较丰的底土层,底土层的下部,非常缺乏营养物质。3.白土是白土化过程发展下的产物,这个过程的特点是粘粒受到漂洗和铁质遭受淋溶,它是一定的地形、母质和水分循环的条件以及农耕等因素综合作用的结果。根据白土化过程在量上表现的程度和直接依赖于施肥的水平,白土可以分为灰白土、黄白土、白土和澄白土等肥力的变型。4.白土是安徽省最重要的水稻土类型,一般都是进行水旱轮作,而且是重要的双季稻土壤。白土肥力的提高主要关键乃在于改善土壤的澄性,澄性的减轻,就意味着产量的提高。改良的方法包括有适合于白土地方性特征的深耕和增肥等等的措施。本文仅仅只是一个初步研究结果的报导,作者希望它能为安徽省白土的研究铺平道路。
1. The clay in Anhui Province is mainly concentrated in the hilly areas between Jianghuai and Guangde, Ningguo and Nanling in the eastern part of southern Anhui. The form of clay is completely different from that of Jiangsu Province. The clay layer is not in the middle of the soil profile, but in the uppermost layer. The most important production characteristics of the clay is the high content of silt in the topsoil, with water Yun Tian Yi Cheng plate, while the absorption capacity is low, do not keep fertilizer. 2. Unlike clay in Jiangsu Province, the clay layer of the clay in Anhui Province is a layer of soil with a high organic matter and crop nutrient content, but the soil is very deficient in phosphorus. Immediately below the bottom of the clay layer is a subsoil that has a higher absorption capacity, lower hydrolysable acid content, and a higher salt content. The lower part of the subsoil is very detrimental to nutrients. 3. Clay is the product of the development of the process of cinnamonization. The process is characterized by the rinsing of the clay particles and the leaching of the iron. It is the result of a combination of topography, parent material and water cycling, and farming. According to the degree of the degree of the amount of the performance of the process of the clay and directly depends on the level of fertilization, white clay can be divided into clay, yellow clay, clay and clay and other fertile soil changes. 4. Clay is the most important type of paddy soil in Anhui Province. It is generally carried out by rotation and drought and is an important double cropping paddy soil. The main key to the improvement of clay fertility is to improve the clarity of the soil and to reduce the sediment, which means that the yield is increased. Improved methods include tillage and fertilization suitable for the local characteristics of the clay. This article is only a preliminary study of the results reported, the author hopes that it can pave the way for the study of clay in Anhui Province.