chemical nitrogen fertilizer

常见例句

Nitrogen phosphorus chemical fertilizer combined organic improve yield, more ideal way of fertilizing. But should pay attention to the plain supplement of potassium at the same time.
氮磷化肥配施有机肥具有持续提高产量、培肥土壤的双重效果，是砂姜黑土培肥改良较理想的施肥方式，但同时要注意钾素的补充。
The dosage and the time of nitrogen supply according to the present recommendation for the application rate of chemical fertilizer nitrogen can not meet the demand of tobacco plant for nitrogen.
生产中普遍推荐的肥料施用技术所提供的氮素与烟株生长的需氮规律不吻合。
In order to find out the losses and moving directions of nitrogen in chemical fertilizer, an experiment of "measure pit" at rice and barley field has been conducted in Qingpu County, Shanghai.
为了解化肥中氮素的流失情况及去向，对上海青浦县进行了水稻、大麦田间测坑试验研究。

But improved farming methods later increased their yields and, at the same time, made better use of chemical nitrogen fertilizer.
Scientists at the agroforestry center say the use of fertilizer trees can reduce the need for chemical nitrogen by up to three-fourths.