荔枝单产
Meteorological yield of litchi
粮食单产
Grain yield per unit area
棉花单产
Cotton per unit area yield
千人粮食单产占有量
Food occupation per hectare per 1000 persons
塑化单产能耗
plastizing uniproducing energy consumption
小麦单产
Wheat yield per unit area
玉米单产
maize yields per unit area