美国政府称今年的玉米产量应该比去年增长约8﹪。
The U.S. government says that this year's corn crop should be about 8 percent more than last year.
过去25年里，玉米产量增长了近125%，而大米产量只增长了7%。
Corn production has jumped nearly 125 percent over the past 25 years, while rice has increased only 7 percent.
玉米产量降幅最大的国家是中国和巴西。
倒伏严重影响玉米产量和品质。
Lodging seriously influenced the yield and quality of maize.
有研究显示旱作玉米产量下降30%。
然而，美国玉米产量小于预期，仍可能推高批发价格。
Yet, the smaller than expected US corn crop could still push wholesale prices higher.
到2030年，气候变化将使南非的玉米产量减少30%。
By 2030, climate change in South Africa is expected to decrease maize harvest by 30%.
人们原本预料，今年美国玉米产量将打破历史最高纪录。
US maize production had been expected to increase to record levels this year.
这个由孟山都公司发现的基因，使北美的玉米产量增加了10个百分点。
The gene was developed by Monsanto to increase yield by 10 percent in North America.
研究了不同氮磷肥处理对复播青贮玉米产量及其饲用品质的影响。
This paper studies the effect of nitrogen and phosphorus fertilizer on yield and forage quality of sequential cropping silage maize.
目前，乙醇只占美国汽车燃料的8%，却消耗了美国巨大的玉米产量的40%。
Ethanol currently accounts for just 8% of America's fuel for vehicles, but it consumes almost 40% of America's enormous maize crop.
根据田间观察资料和玉米产量，对11种土壤抗旱指标进行了评价。
Based on the data of field observation and maize yields, 11 drought resistant indexes of soil are evaluated.
通过大田试验研究了保护性耕作对土壤水温和春玉米产量形成的影响。
The field experiment was conducted to study the effects of different conservation tillages on soil temperature, moisture and yield formation of spring maize.
根据预测本年度美国玉米产量将不尽人意，于是玉米价格一路攀升至每蒲式耳6美元。
The price of maize (corn) headed towards $6 a bushel, as estimates suggested that this year’s harvest in America will be disappointing.
因此，研究滴灌施肥下不同水肥因子对玉米产量的效应具有重要的现实意义。
So it has been attached great importance on the effect of irrigation and fertilization, as well as its influence on yield of corn.
其次最常见的农作物，大豆，回报低，但轮作是必要的用以保证土壤能够拥有宽裕的玉米产量。
The second most common crop, soybeans, yields a lower return but crop rotation is necessary to keep the soil in shape for bounteous corn yields.
根据美国能业部统计，世界玉米产量的70%产自美国、中国、巴西和欧联体国家。
The USDA estimates more than 70 percent of the world's corn is grown in four regions –the United States, China, Brazil and the European Union.
不同追肥方法对高原玉米产量及产量形成过程中源、库、流的作用和影响是不同的。
Different methods of top application to the yield and its formation process of plateau corn affect source, storage-capacity and flow differently.
拔节—抽雄期是低温冷害影响冬玉米产量的关键期，另一个次关键期为抽雄—开花时段。
Jointingheading was the most critical stage in which cold damage affected the yield of winter sowing maize.
采用随机区组设计方法，研究了达尔丰喷施时期和喷施量对玉米产量和其它经济性状的影响。
By using randomized-block design of two factors, the effects of Daerfeng fertilizer and spraying date on maize yeild and other economic characteristics were studied.
此外，由于农民正减少大豆和小麦的种植，因此将来即使不降低玉米产量，此类农作物的价格也会不断上扬。
Moreover, even to produce as much corn as they are now, farmers are growing less soya and wheat, and so pushing up the prices of those crops too.
专家称通货膨胀上升是因为这个季风季节的大范围干旱影响玉米产量并且导致国内食品价格上涨。
Experts say Inflation is rising because a widespread drought this monsoon season affected crop production and pushed up food prices in the country.
通过测定不同种植密度玉米群体的光能分布，研究了群体光能分布特征对玉米产量和品质的影响。
The effects of light distribution in maize population on grain yield and quality were studied by determining the light distribution character among different plant densities.
几十年来，美国玉米产量提高的关键是氮肥的利用，该肥在非洲的使用成本远比在美国的要高得多，林奇表示。
A key component in raising American corn yields in recent decades, nitrogen fertilizer, is more expensive in Africa than in the United States, Lynch says.
采用田间小区试验方法研究了不同种植方式下玉米产量，干物质积累动态和养分吸收动态变化特点。
A field experiment was conducted to analyse the dynamics of biomass yield and n, p, K absorption by maize under different planting systems.
在华北平原北部研究了不同降水年型、不同水氮管理措施对冬小麦和夏玉米产量和氮素平衡的影响。
The effect of different rainfall years and different water and nitrogen management ways on winter wheat and summer maize was studied in northern part of north China Plain.
在华北平原北部研究了不同降水年型、不同水氮管理措施对冬小麦和夏玉米产量和氮素平衡的影响。
The effect of different rainfall years and different water and nitrogen management ways on winter wheat and summer maize was studied in northern part of north China Plain.
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