深加工后的粮食所获得的商业利润比原产品高几倍到十几倍；大棚蔬菜精耕细作后的单产收益往往比粗放型的耕作方式多十几倍乃至几十倍。于是，“科技兴农”的倡导便深入农民人心——明摆着，效益就是不一样。 　　由此想到了中国出版这块“大田”。 　　近二十年来，中国出版大 Processed food obtained after the commercial profit higher than the original several times to ten times; greenhouse vegetables intensive farming income per unit of income than the extensive ten times or even dozens of times. As a result, advocacy of “rejuvenating agriculture through science and technology” will go deep into the hearts of the peasants. Clearly, the benefits are different. It came to mind that China published this piece of “Daejeon.” In the past 20 years, China has published a large book