科学利用土地，提高土地生产力水平是解决由于人口增加，耕地面积减少给人类的食物生产与安全保障带来巨大压力的有效途径。在这方面，中国农业科技出版社新近出版的《土壤肥力与肥料》一书给我们带来了深刻启示。该书是美国学者Ｔｉｓｄａｌｅ、Ｎｅｌｓｏ和加拿大学者Ｂｅａ Scientific use of land and improvement of land productivity are effective ways to solve the enormous pressure on mankind’s food production and safety and security due to the increase of population and the reduction of arable land. In this regard, China Agricultural Science and Technology Press recently published “Soil Fertility and Fertilizer,” a book gives us a profound inspiration. The book is American scholar Tisdale, Nelso and Canadian scholar Bea