With the development of the integrated productivity, we ask a new request to the agricultural extension.
随着我国农业综合生产能力的提高，对新时期的农业推广提出了新的要求。
To study the integrated productivity and the population carrying capacity of the agricultural resources of China;
中国农业资源综合生产能力和人口承载能力；
To study the integrated productivity and the population carrying capacity of the agricultural resources of China;
中国农业资源综合生产能力和人口承载能力；
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