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以塑料大棚内辣椒保护地土壤为研究对象,调查了寒温带暗棕壤上培育的保护地土壤地温随时间和土层变化情况。结果表明:不同深度土壤温度日变化为正弦曲线,日最高地温波动比日最低地温的波动大。随着土壤深度增加,蓄热时间变长,散热时间缩短,蓄放热时间随深度增加依次滞后,且强度小。大棚内地温日振幅因受到环境因子影响产生的波动情况随着深度增加而减小。
Taking the pepper protected soil in the plastic greenhouse as the research object, the change of the ground temperature and the soil temperature of the protected soil cultivated on the dark brown soil in the temperate zone were investigated. The results showed that the diurnal variation of soil temperature in different depths was a sinusoidal curve, and the fluctuation of maximum daily ground temperature fluctuated more than the daily minimum ground temperature. With the increase of soil depth, the heat storage time becomes longer, the heat dissipation time is shortened, the heat storage and storage time lags behind the increase in depth, and the intensity is small. The temperature fluctuation amplitude of the inland greenhouses decreased with the increase of depth due to the environmental factors.