土宜学是研究土壤与植物,特别是与栽培植物间相互关系的科学。拿农民的谚语来说即“看土种植”,也就是合理利用土壤。目前看来,从发展土壤肥力的角度出发,研究耕作土壤与作物品种间的演替规律以及土壤组合与品种组合间的关系,不但是地尽其力、均衡增产的重要途径,也是用地与养地的基本问题。因之土宜学的研究在农业生产实践与土壤学的基本理论方面,均有不可忽视的重大意义。 土宜学是我国农业生产发展过程中的历史遗产之一。远在先秦时代,已有显著的成就。管子地原篇上便系统地论述了关中与九州地区的土宜问题,明确指出了不同土壤上适宜种植的作物品种以及适宜生长的林木种类。在当时来说,是农业上出色的成就,但是由于漫长的封建社会的 Soil science is a science that studies the relationship between soil and plants, especially cultivated plants. To take the peasants’ proverb that “look at soil planting”, that is, the rational use of soil. At present, from the perspective of soil fertility development, studying the succession law between cultivated soils and crop varieties and the relationship between soil composition and variety combinations is not only an important way to make every effort to balance and increase production, but also to land and culture The basic problem of land. The study of earth due to its learning has great significance that can not be neglected in the basic theory of agricultural production practice and soil science. Soil-based learning is one of the historical heritages in the development of agricultural production in China. Far in the pre-Qin era, there have been remarkable achievements. Guan pipe to the original will be systematically discusses the Guanzhong and Kyushu region of soil should be clearly pointed out that different soil suitable for planting varieties of crops and suitable for the growth of forest types. At that time, it was an outstanding agricultural achievement, but due to the long feudal society