Agricultural and horticultural covering film and method for producing the same

An agricultural and horticultural film having an infrared absorbing layer containing infrared absorbing material ultrafine particles,

• wherein the infrared absorbing material ultrafine particles are composite tungsten oxide ultrafine particles,
• the composite tungsten oxide ultrafine particles have a XRD peak top intensity ratio value of 0.13 or more based on an XRD peak intensity ratio value of 1 on plane (220) of a silicon powder standard sample (640c produced by NIST),
• a dispersed particle size of the composite tungsten oxide ultrafine particles is 10 nm or more and 200 nm or less,
• a crystallite size of the composite tungsten oxide ultrafine particles is 10 nm or more and 200 nm or less, and
• each of the composite tungsten oxide ultrafine particles is made of a single crystal in which a volume ratio of an amorphous phase in the composite tungsten oxide ultrafine particles is less than 50%.