光合生产力或叫光合潜力,是指在其他条件(水、热、肥、品种、CO_2技术措施等)充分满足时,理想作物群体实际获取的太阳辐射能所形成的最大产量。通用的表达式为:W_Q=E×∑Q式中 W_Q 为一定时期内,单位土地面积上的光合潜力(生物或经济产量);∑Q为同时期内,投入该面积上的太阳辐射能;E 为最大光能利用率。 The photosynthetic productivity or photosynthetic potential refers to the maximum yield of solar radiation actually acquired by an ideal crop population under other conditions (water, heat, fertilizer, variety, CO 2 technical measures, etc.). The general expression is: W_Q = E × ΣQ Where W_Q is the photosynthetic potential per unit of land area (biological or economic output) over a certain period of time; ΣQ is the solar radiation energy input into the area over the same period; E is the maximum utilization of light energy.