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从土壤学的观点,认为土壤硬度系指农业机械的静荷载和动荷载傅递于土壤上,土壤对这些外荷力所能发挥的抵抗力,因此测定这种土壤性质,对于土壤耕作中某些问题的阐明和解决,实具有巨大意义。 1954年初,我们欲研究东北北部暗色草甸土的物理机械性质,从土壤硬度和其他土壤因子间的关系,试图说明暗色草甸土在多雨情况下,土壤下陷机车的原因,并探究解决该问题的途径。但苦无测定这种性质的仪器和方法。后来在“土
From the viewpoint of soil science, soil hardness is considered as the static and dynamic load of agricultural machinery, and the soil can exert its resistance to these external load forces. Therefore, the soil properties are determined. For soil farming The elucidation and solution of these problems really have great significance. In early 1954, we attempted to study the physical and mechanical properties of the dark meadow soil in north-northeastern China. From the relationship between soil hardness and other soil factors, we attempted to explain the reasons for the soil subsidence of the dark meadow soil under rainy conditions and to explore solutions to this problem Way. But there is no instrument or method for measuring this property. Later in "earth