靖边属陕北玉米主产区之一。
Jingbian County is one of the major corn producing areas in North Shaanxi.
西南玉米区是我国三大玉米主产区之一，分别占全国玉米总面积、总产量的30%左右。
Southwest maize zone is one of the largest maize zone of China, Ac counting for about 30% of total area and total output of the nation.
本文采用非参数估计的信息扩散模型测算了我国粮食主产区水稻、玉米、小麦和棉花产量损失风险水平。
The paper applied the information diffusion model of non-parametric estimation to project the level of productivity risks for cereals, rice, corn and wheat at major grain-producing area.
鉴于粮食主产区和稻谷、小麦、玉米三种粮食作物在我国粮食生产中占有举足轻重的地位，研究具有实际的指导价值。
Because the main grain producing districts and paddy, wheat and corn take pretty crucial role in our nation's grain production, doing this research is specific direction value.
保定平原是河北省主要的粮食主产区，农作物以冬小麦、夏玉米和棉花为主。
Baoding plain is a primary bread basket in Hebei province, winter wheat, maize and cotton are the main crops.
主产区玉米生产全要素生产率提高主要是由于技术进步速度大于技术效率下降的速度。
Result shows that corn production in main producing areas is mainly scale inefficiency and is at the stage of decreasing returns to scale.
主产区玉米生产全要素生产率提高主要是由于技术进步速度大于技术效率下降的速度。
Result shows that corn production in main producing areas is mainly scale inefficiency and is at the stage of decreasing returns to scale.
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