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一、前言广西石灰性水稻土广泛分布于桂东北、桂中、桂西、桂西南的岩溶地区,如钟山、灵川、全州、宜山、东兰、凤山、德保、靖西等县的石灰性水稻土占该县稻田面积的20—50%以上。这类稻田以双季稻连作或玉米水稻轮作为主,属中、低产田,年亩产不足800斤。为了了解这类型水稻土的性态特征和肥力性能,笔者曾在上述一些地区进行调查,并采集一些代表性土壤样品进行分析。本文主要根据1981—1982年调查分析所得的资料,对这类土壤作一些探讨。
I. Preface Guangxi calcareous paddy soil is widely distributed in the karst areas of northeast Guangxi, Guangxi, Guangxi and southwestern Guangxi, such as Zhongshan, Lingchuan, Quanzhou, Yishan, Donglan, Fengshan, Debao, Jingxi, etc. The county’s calcareous paddy soil accounts for more than 20-50% of the paddy field area in the county. This type of paddy rice with double cropping rice or corn as the main round of rice, is a middle and low yield fields, the annual output of less than 800 pounds. In order to understand the characteristics of this type of paddy soil and fertility properties, the author has conducted some surveys in these areas, and collected some representative soil samples for analysis. This paper mainly based on the 1981-1982 survey and analysis of the data obtained from this type of soil to make some discussion.