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福建地形复杂,气候悬殊,土壤类型多种多样.中低产田土壤类型主要有黄泥型水稻土(约 500万亩,占耕地总面积的28.2%)’冷浸型水稻土(约400万亩,占22.6%),沙漏型水稻土(约100万亩,占5.6%),这些中低产水稻土大多分布在闽西北山区,根据山区的气候特点,按纬度和海拔高度的不同又可划分为暖地、温地和凉地等三个生物气候区.为此,我们于不同生物气候区,分别研究这三个类型中低产水稻土的物理和化学障碍因素,为中低产田改良的分类指导提供科学依据.
There are many types of soils in middle and low-yielding fields, such as yellow muddy paddy soil (about 5 million mu, accounting for 28.2% of the total cultivated land area), cold-soaked paddy soil (about 4 million mu , Accounting for 22.6%), hourglass type paddy soil (about 1 million mu, accounting for 5.6%), most of which are distributed in mountainous areas in northwestern Fujian. According to the climatic characteristics in mountainous areas, Warm, cool and cool.Thirdly, we studied the physical and chemical barriers of these three types of middle and low yield paddy soils in different bioclimatic regions, respectively, so as to provide guidance for the classification guidance of low and middle-yielding fields Scientific basis.