Farmers use nitrogen fertilizer (氮肥) to help grow bigger crops.
农民使用氮肥来帮助种植更大的作物。
In 2000, about 40 farmers across the state learned how to use nitrogen fertilizer more sparingly.
2000年，全国大约40名农民学习了怎样尽量少用氮肥。
Dennis Lindsay still recalls the day four decades ago when his father, an Iowa farmer, began using nitrogen fertilizer on the family's 160 acres.
丹尼·斯林德赛仍然记得四十年前的那一天，他父亲，一位爱荷华州农民，第一次在家160英亩地中使用氮肥。
Sanginga notes that about 440 lbs. (200 kg) of nitrogen fertilizer is generally needed to grow five tons (5, 000 kg) of maize, but the average African farmer can afford only 8 lbs. of fertilizer.
桑锦格指出，一般情况下生产五吨（5000kg)玉米大约需要440lbs.(200kg)氮肥，而非洲农民只能担负8lbs.的化肥。
The yield increased with certain nitrogen fertilizer.
适量增施氮肥使辣椒产量增加。
The effect of nitrogen fertilizer on accumulation of Pb differed with cultivars.
施肥对水稻植株铅积累的影响因品种而有差异。
The effect of potassium increased with increasing yield and nitrogen fertilizer.
钾肥效应随着产量和施氮量提高而增大。
He agrees that the acidifying effects of nitrogen fertilizer deserve more attention in China.
他同样认为，氮肥的酸化效果在中国应该引起更多的关注。
The influence of applying nitrogen fertilizer to nitrogen mineralization was studied in paddy soil.
对稻田土壤施外源氮对氮素矿化的影响进行了研究。
Rice is one of the main crops in China and requires a lot of nitrogen fertilizer to ensure high yields.
水稻是中国主要的粮食作物，氮是作物吸收利用的大量元素之一，水稻对氮的吸收利用效率成为人们关注的焦点。
The effects of increasing yield were varied with different application methods at a same nitrogen fertilizer level.
同一施氮水平不同施肥方法增产效果不同。
The tax design of nitrogen fertilizer was discussed by utilizing the external theory and the demand elasticity theory.
运用外部性理论和需求弹性理论，探讨氮肥税的设计。
Types of fertilizer with nitrogen fertilizer, per mu can be with human excrement urine thin 1500 ~ 2000 kg, 5 ~ 10 kg urea.
肥料种类以氮肥为主，每次每亩可施有稀薄的人粪尿液1500 ~ 2000公斤，加入尿素5 ~10公斤。
The heat tube corrosion guards were developed to replace the tube corrosion guards used in small scale nitrogen fertilizer plants.
开发设计的热管式预腐蚀器，用于替代小氮肥厂原用的普通列管式预腐蚀器。
Sugarcane is an important sugar and energy crop. In sugarcane production, nitrogen fertilizer and water are two most important factors.
甘蔗是重要的糖料作物和能源作物，在甘蔗栽培中，氮肥和水分是两个最重要的因子。
Farmers in Pakistan enhance nitrogen fertilizer use efficiency by 15% by splitting nitrogen applications in consonance with crop growth.
通过使氮分解的速度与作物生长的速度相匹配，巴基斯坦农民使氮肥料的利用率增加了15%。
The influence of application of organic and nitrogen fertilizer on the content of alkali hydrolysable N in fertilities soil was studied.
对设施土壤中长期施有机肥与氮肥对土壤中碱解氮含量的影响进行了研究。
The total yields and composition of mixed pasture under different cutting frequency, nitrogen fertilizer and seeding rates were determined.
研究了刈割次数、施氮量和混播比例对扁穗牛鞭草和白三叶混播草地产量和群落组成的影响。
University of Virginia professor Jim Galloway calls synthetic nitrogen fertilizer a "wonderful invention" because it increased food production.
弗吉尼亚大学的教授吉姆?加洛韦（JimGalloway）称氮肥是一种伟大的发明，因为它能提高产量。
The effect of nitrogen fertilizer on soil enzymatic activity and rhizosphere microorganisms of Yumai 49-198 root system was studied in this paper.
在大田高产栽培条件下，研究了不同施氮水平对豫麦49-198根际微生物和土壤酶活性的影响。
Effects of plant density and nitrogen fertilizer on nitrogen metabolism of weak-gluten wheat varieties Ningmai 9 with good grain quality were studied.
在大田试验条件下，研究密度与氮肥运筹对弱筋小麦品种宁麦9号植株氮代谢变化的影响，分析氮素运转与籽粒品质、产量的关系。
Efficient genotypes and reasonable nitrogen fertilizer management are effective measures to increase nitrogen uptake and utilization efficiency in rice.
选用氮素高效基因型和合理的氮肥调控是目前提高水稻氮素利用效率的有效途径。
Of three nitrogen fertilizer types, the amide-form nitrogen source was better to the formation and accumulation of gliadin as well as its four fractions.
比较而言，酰胺态氮素更有利于醇溶蛋白及各组分的形成与积累。
The effects of different nitrogen fertilizer levels and transplanting mode on canopy structure and yield in Honglianyou 6 in plot experiments were studied.
以杂交中稻红莲优6号为材料，采用小区试验，研究了不同施氮水平和栽插密度及栽插模式对杂交中稻群体结构的影响。
The content of chlorophyll in strawberry leaf increased, and the total yield of strawberry fruit trended to increase with the increment of nitrogen fertilizer.
随施氮量的增加，草莓叶片中叶绿素含量增加，草莓总产量呈增加趋势。
The content of chlorophyll in strawberry leaf increased, and the total yield of strawberry fruit trended to increase with the increment of nitrogen fertilizer.
随施氮量的增加，草莓叶片中叶绿素含量增加，草莓总产量呈增加趋势。
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