氮,堪称肥中之杰,它显赫的功勋众目共睹。尤其是60年代化学氮肥问世,一举打破了传统农业长期低产的寂静。农业生产从此出现了前所未有的勃勃生机。 想当初。水稻亩产徘徊在一二百公斤,人们试图“跨纲要”,谈何容易。虽有了良种,但饥不足食, Nitrogen, called fat in the Jie, its outstanding contributions all witnesses. In particular, the advent of chemical nitrogen fertilizer in the 1960s broke the silence of long-term low-yielding of traditional agriculture in one fell swoop. Since then, agricultural production has seen unprecedented vigor and vitality. Think of it. The mu yield of rice hovers at one or two hundred kilograms, and people try to “cross-platform” to talk about how easy it is. Although a thoroughbred, but hungry food,