1) benefit of N fertilizer
氮肥效益
1.
It showed that,the absorption and accumulates of nitrogen increased with the increase of nitrogen rate,while the production value,NUE and benefit of N fertilizer decreased after increased,the maximal value of PE and benefit of N fertilizer emerged when the nitrogen rate was 135 kg·hm-2,and the maximal production value occurred when the nitrogen rate was 210 kg·hm-2.
探讨了不同施氮量下马铃薯氮肥利用率的变化、氮肥效益以及马铃薯整个生育时期氮素的吸收分配规律。
2) nitrogen marginal effect
氮肥边际效益
3) Slow released nitrogenous fertilizer
缓效氮肥
4) Nitrogen fertilizer effect
氮肥效应
1.
Influence of different preceding crops on nitrogen fertilizer effect of flue-cured tobacco;
不同前作对烤烟氮肥效应的影响
5) Long-Lasting Nitrogen Fertilizer
长效氮肥
1.
The Effect of Several Long-Lasting Nitrogen Fertilizers on Sugarcane;
几种长效氮肥对甘蔗的效应
6) effect of N and P
氮磷肥效
补充资料：缓释氮肥
分子式：
CAS号：
性质：也称控释氮肥(controlled release nitrogen fertilizer)。由于化学成分改变或表面包涂半透水性或不透水性物质而使其中有效养分缓慢释放，保持较长肥效期的氮肥。它的重要特性是可以控制养分的释放速度。合成缓释氮肥的品种有脲甲醛、草酰胺等。包膜的氮肥品种有：硫黄包膜肥料、聚合物包膜肥料等。
CAS号：
性质：也称控释氮肥(controlled release nitrogen fertilizer)。由于化学成分改变或表面包涂半透水性或不透水性物质而使其中有效养分缓慢释放，保持较长肥效期的氮肥。它的重要特性是可以控制养分的释放速度。合成缓释氮肥的品种有脲甲醛、草酰胺等。包膜的氮肥品种有：硫黄包膜肥料、聚合物包膜肥料等。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条