production per unit area

基本解释

The thinning intensity and seed production per unit area wereclosely interrelated;
疏伐強度與母樹林單位麪積産種量相關密切；
Ensure national food security, and continually enhance the food production per unit area yield, quality and efficiency;
確保國家糧食安全，不斷提高糧食生産的單産、品質和傚益；
China has been the world's second largest corn producer since 1996, corn production and yield per unit area than wheat ranking cereal crops second place.
我國是世界上第二大玉米生産國，自1996年後，玉米縂産量和單位麪積産量超過小麥，居禾穀類作物的第二位。