For example, nitrogen can be a fertilizer, but it can stunt plant growth when nitrogen comes out of the air in acid form.
举例来说，氮可以用作化肥，但其一旦以酸的形式离开大气，就会阻碍植物生长。
Fertilizer use differs from country to country, and from too little to too much. Nitrogen and phosphorus can produce big crops. But they can also pollute water and air.
肥料的使用因国而异，并且使用的多少也有差别。氮和磷能使作物长得粗壮。但同时也会对水和空气造成污染。
The pollutions were related to soil, fertilizer, irrigation water and air.
污染和土壤、肥料、灌溉水及空气有关。
Plate air preheater with corrugated plate as heat transferring elements, has solved problems above, which has been applied in petrochemical and chemical fertilizer unit.
采用以波纹板片作为传热元件的新型板式空气预热器，克服了上述问题并在石化、化肥等行业上得到了应用。
But on farms that cannot get fertilizer, the best solution may be the method of rotating sorghum in the air.
但这并不能使农田得到肥料，因此最好的解决办法就是对高梁进行轮作。
The germs is a biggest colony in soil microorganism. Studying result showed, soil germs contain was direct related with soil's water, fertilizer, air and temperature etc.
细菌是土壤微生物中数量最大的一个类群，研究结果表明，土壤中细菌的数量同土壤的水肥气热等因素有直接关系。
Here briefly presents the types, performance, construction characteristics and operation of the air compressors used in large scale residual oil fertilizer plants imported from foreign countries.
介绍中国引进的渣油型大化肥装置用空压机型式、性能、结构特点及使用情况。
They can be applied to scaling prevention in the circulating cooling water systems in power plants, irons steel factories, chemical fertilizer plants, refineries and air conditioning systems.
用于电厂、铁厂、工厂、肥厂、油厂和空调系统等循环冷却水中防止结垢。
They can be applied to scaling prevention in the circulating cooling water systems in power plants, irons steel factories, chemical fertilizer plants, refineries and air conditioning systems.
用于电厂、铁厂、工厂、肥厂、油厂和空调系统等循环冷却水中防止结垢。
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