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伟大领袖毛主席曾教导我们:“要学习土壤学;这是农业科学的基础,看了它才知道如何增产。”认土和改土是土壤学所要研究的主要内容,要搞好农业生产,不断取得丰收。就得在认土的基础上,合理地用土和改土怎样认土? 认识土壤,可从三方面着手:一是查看土壤的形态特征;二是测定土壤的理化生物性质;三是进行田间试验,了解土壤对作物的适应性。三者可互相配合,取长补短。
Great leader Chairman Mao taught us: “We should study soil science; this is the basis of agricultural science. When we look at it, we know how to increase production.” Recognizing soil and improving soil are the main contents of soil science research. We must do a good job in agricultural production, Continued harvest. We must recognize the soil based on the reasonable use of soil and soil how to recognize the soil? Know the soil, from three aspects: First, check the morphological characteristics of the soil; second is to determine the physical and chemical properties of soil; third is to conduct field trials , Understand the adaptability of the soil to crops. The three can complement each other, learn from each other.