production per unit area

基本解釋

The thinning intensity and seed production per unit area wereclosely interrelated;
疏伐強(qiáng)度與母樹(shù)林單位面積產(chǎn)種量相關(guān)密切；
Ensure national food security, and continually enhance the food production per unit area yield, quality and efficiency;
確保國(guó)家糧食安全，不斷提高糧食生產(chǎn)的單產(chǎn)、品質(zhì)和效益；
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(guó)是世界上第二大玉米生產(chǎn)國(guó)，自1996年后，玉米總產(chǎn)量和單位面積產(chǎn)量超過(guò)小麥，居禾谷類作物的第二位。