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决定土壤导温系数的方法,基本上可以分为两类:一类是用特制的仪器,来直接测定;另一类是通过土壤温度的时间变化及垂直分布情况,来间接计算.用现有的测定土壤导温系数的仪器来测定田间的士壤导温系数是不适合的,因为在测定土壤导温系数的时候,要破坏土壤的自然结持状态,特别是对测定较深层次的土壤导温系数,对土壤的自然结持状态就要破坏得更历害.因此间接地用土壤温度来计算土壤导温系数,在目前仍
The methods for determining the soil temperature coefficient can be basically divided into two categories: one is to use special equipment to measure directly, the other is to indirectly calculate soil temperature through time and vertical distribution, The determination of soil thermal conductivity of the instrument to determine the field temperature of soil temperature coefficient is not suitable, because in the determination of soil thermal conductivity coefficient, it is necessary to destroy the natural state of soil holding, especially for the determination of the deeper soil Temperature coefficient, the natural state of the soil will be destroyed more than the destruction of the state Therefore, indirect calculation of soil temperature with soil temperature coefficient of temperature is still