早在1813年,英国化学家H.Davy就曾指出,如果土壤的产量很低,则其贫瘠的原因可以通过化学分析来确定.第一个试图以化学测试手段探索土壤养分丰缺的科学家是德国的李比希.他提出了“矿质养分”原理,并首先确定氮磷钾是植物普遍需要而土壤供应不足的养分.从那时候起的一百四十多年 As early as 1813, H.Davy, a British chemist, once pointed out that if soil yield is low, the cause of its infertility can be determined by chemical analysis. The first scientist trying to explore the abundance of soil nutrients by chemical testing is In Germany, Liebig proposed the principle of “mineral nutrition,” and first of all determined that NPK is a nutrient that is generally needed by plants and not supplied by the soil. Since then, over 140 years