养分是作物生长的物质基础,是粮食的“粮食”。自20世纪90年代以来,我国农业生产中化肥用量保持快速增长,但粮食产量却徘徊不前,养分利用效率持续下降,生态环境问题日益严重。这些问题使学术界开始重新思考仅仅依靠改土施肥等传统思路能否实现我国高产高效的可持续农业发展目标 Nutrients are the material basis for crop growth and are the “food” of grain. Since 90s of the 20th century, the amount of fertilizer used in agricultural production in our country has maintained a rapid growth. However, grain output has stagnated, utilization efficiency of nutrients has been declining, and the problems of ecological environment have become increasingly serious. These problems have led academics to start rethinking whether China can only achieve the goal of sustainable and productive agriculture with high output and efficiency based solely on traditional ideas such as soil improvement and fertilization