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我们将要论述的农地适宜性评价是指在现实农业技术水平下,一定土地利用类型对一种或几种指定的农林牧作物生长合适程度的鉴定。从这个意义上讲,这种评价是自然评价,亦是土地质量评价。一、土地评价基本原理 1.土地生产力土地可以生长出人类所需要的动植物产品。这是在两种情况下进行的,一种是在土地自然情况下进行的,如天然草场生长牧草,原始林地生长木材。把土地的这种生长能力称为土地的自然力;另一种是当处女地被开垦熟化以后,不仪具有自然属性的自然力,而且还具有人类所赋予的与自然属性溶为一体的那些属性,使得耕地上生长作物。
We will discuss the evaluation of the suitability of farmland refers to the actual level of agricultural technology, a certain type of land use of one or several designated agricultural and forestry grazing growth appropriate degree of identification. In this sense, this evaluation is a natural evaluation, but also a land quality evaluation. First, the basic principles of land evaluation 1. Land productivity Land can grow human needs animal and plant products. This is done in two situations, one in the natural conditions of the land, such as pasture growing on natural pastures and wood growing on virgin woodland. The growth ability of the land is called the natural force of the land. The other is that when the virgin land is reclaimed and aged, it does not have the natural force of nature, but also possesses the properties of human nature and nature, making it Cultivated land grows crops.