近年来,与果树生产密切关联的果园或树冠的光状况与光合作用日益受到重视。对此,国内外都有人研究。这些研究都需要测定光照。光照是太阳辐射的俗称。在气象观测上用辐射计或积累辐射计测定其能量。用照度计测 In recent years, the light conditions and photosynthesis of orchards and canopy, which are closely related to fruit tree production, have drawn more and more attention. In this regard, there are people at home and abroad. These studies all need to measure light. Light is the common name for solar radiation. In meteorological observation with a radiometer or accumulation of radiometer to determine its energy. Measured with illuminance meter