primary production

基本解释

Testing earlier in the supply chain, near the point of primary production, might seem like the most advantageous approach.
早在供应链进行测试，靠近初级生产的点，似乎是最有利的办法。
Good controls and practices during primary production, processing, distribution and sale are all essential to the production of safe food.
初级生产、加工、分发和销售中良好的控制与操作，对安全食品的生产来说都必不可少。
Mankind appropriates about a quarter of what is known as the net primary production of the Earth (this is the plant tissue created by photosynthesis)—a lot, but hardly near the point of exhaustion.
人类仅利用了地球大约四分之一净初级生产资源（这是由植物组织光合作用所产生的）。虽然这已经很多，但是还没有达到用尽的地步。

What better way to shift your economy from its traditional reliance on primary production?
ECONOMIST: Wandering scholars
At best could entirely eliminate the need for more primary production such is the scale of waste.
FORBES: What Tyler Misses About How To Feed The World
Tata, which mines all the iron ore and coal it needs, now aims to carry out primary steel production close to its iron-ore deposits, and then ship semi-finished steel for finishing close to foreign consumer markets.
ECONOMIST: Why the Tata-Corus deal makes sense for both parties

初级生产力
Antarctic ice microalgae are one of main producer of primary production in marine ecology system of Antarctic pole region, they take up important status and play important role in Antarctic ecology system.
南极冰藻是极地海洋生态系统中初级生产力的重要承担者之一，在南极生态系统中具有重要的地位和作用。
初级生产者
Environmental changes in global scales, such as increase of UVR, elevated CO2 concentration, ocean acidification and global warming, due to human activities can affect physiological processes and primary production in aquatic environments, and eventually influence ecosystems.
人类活动导致的全球性环境变化（如阳光UV-B辐射增加、CO2浓度升高、海洋酸化及全球变暖等）,会影响水域初级生产者藻类的生理代谢,进而影响生态系统的各种过程及生态平衡。
第一性生产量
初级生产量
初级生产

初级生产力
On the basis of the principles of plant physiology, agro-meteorology and soil environment, net primary production of rice and wheat crops was modeled.
以植物生理学、农业气象学和土壤环境学的基本原理为基础，建立了稻麦作物净初级生产力模型。
第一性生产力
初级生产量