目前国内外研究土壤资源评价的方法很不一致。由于评价的对象和目的不同,原则和方法也各有差异。结合当前全国开展的第二次土壤普查,我们在通县试点工作中,对县一级土壤资源评价方法进行了一些工作。现将评价原则、内容和方法简述于后,供参考。 一、土壤资源评价的目的和对象 土壤资源评价的实质就是土壤条件的农业鉴定,主要以土壤肥力为中心,以土壤类型和土被结构为评价对象,着重从土壤属性及其生产条件来评价土壤生产潜力。按土壤对农、林、牧业生产的适宜性,限制性、及土壤生产潜力水平等进行划分。所以,具有明显的实用目的。通过质量鉴定和数量统计,可以摸清省、地、县土壤资源情况,为制定各级农业区划和农 At present, the methods of soil resource assessment at home and abroad are very different. Due to the different objects and purpose of the evaluation, the principles and methods are also different. Combined with the current second national soil census conducted throughout the country, we pilot work in Tongxian county-level soil resources assessment methods for some work. The evaluation principles, content and methods are outlined below, for reference. First, the purpose and object of soil resource assessment The essence of soil resource assessment is the agricultural appraisal of soil conditions, mainly in soil fertility as the center, with soil type and soil structure as the evaluation object, focusing on soil properties and production conditions to evaluate the soil Production potential. According to the soil on agriculture, forestry, animal husbandry production of the suitability, restrictive, and potential level of soil production division. So, with obvious practical purpose. Through quality appraisal and quantity statistics, we can find out the soil resources in provinces, prefectures and counties. In order to formulate the agricultural zoning and agriculture