小气候指是由于下垫面结构不均所引起的近地面局地小气候。其中农田小气候、森林小气候及陆地水域小气候为小气候的典型类型。一、农田小气候及其产生的效应成因上划分,农田小气候可分为秸秆覆盖小气候和复合农林业小气候。1.秸秆覆盖产生的小气候效应低温条件下,地面覆盖秸秆后,会使导热率变小,辐射能量反射率增大,从而 Microclimate refers to the sub-surface microclimate caused by the uneven structure of the underlying surface. Among them, the microclimate of farmland, the microclimate of forest and the microclimate of terrestrial water are the typical types of microclimate. First, the microclimate of farmland and its effects Generated on the division, farmland microclimate can be divided into straw mulching microclimate and agroforestry microclimate. 1. Microclimate effect of straw mulching Under the conditions of low temperature, after the straw is covered by the ground, the thermal conductivity will be smaller and the reflectivity of the radiant energy will increase