The soil cover film for agriculture and horticulture provided by the present invention reflects visible light from sunlight and the like more efficiently, supplies light required for plant growth to the plant side, and absorbs infrared light to warm the soil, not This causes the ambient temperature in the greenhouse to rise.The agricultural and horticultural soil cover film of the present invention is characterized by comprising: a white light reflecting layer containing a white light reflecting material； and an infrared light absorbing layer containing fine particles of the infrared absorbing material； and the infrared absorbing material fine particles are composite tungsten oxide fine particles In the crystal constant of the hexagonal crystal, the values of the a-axis and the c-axis are 7.3850 Å or more and 7.4186 Å or less, and the c-axis is 7.5600 Å or more and 7.6240 Å or less. The particle size is 100 nm or less.本發明所提供的農園藝用土壤覆蓋薄膜，係較習知更有效率地反射來自太陽光等的可見光，將植物生長所需要的光供應給植物側，且會吸收紅外光，溫暖土壤，不致使溫室內等的環境氣溫上升。本發明的農園藝用土壤覆蓋薄膜，其特徵係具有：含白色光反射材料的白色光反射層、與含紅外線吸收材料微粒子的紅外光吸收層，且上述紅外線吸收材料微粒子係複合鎢氧化物微粒子，所含結晶係六方晶，其晶格常數中，a軸與c軸之值係a軸設為7.3850Å以上且7.4186Å以下、c軸設為7.5600Å以上且7.6240Å以下；該微粒子的平均粒徑係100nm以下。
