研究所预测，中亚玉米减产47%，水稻减产30%。
In the Middle East the institute predicts yield declines of 47% for maize and 30% for rice.
每年均有因旱灾造成的水稻减产，大旱年份，减产更多，甚至绝收。
Every year the paddy rice output always reduces because of drought. When the drought is serious, the output reduced more, even extremely.
杂草和害虫的危害是导致水稻减产的重要原因，每年由此给全球水稻生产造成的损失高达数百亿美元。
The harms of insects and weeds were an important reason for reduction of rice output, which caused the annual loss of global rice production reach to several decade billions in us dollar.
该文探讨了各类土壤中铜污染对水稻产量的影响，并就农田中铜污染浓度与水稻减产的临界值作了阐述。
The paper discusses the effect of Cu pollution in various soils on the yield of rice. The viewpoint about the critical value of Cu pollution in farmland and decreasing rice yield is described.
至于水稻和黄豆，在一些地方的减产被世界其他地方增强的生产能力所抵消，因此在总体上没有变化。
For rice and soy, declines in some places were offset by productivity boosts elsewhere in the world, so there was no overall change.
接种试验证实潜根线虫侵染水稻能引起减产，主要是减少有效穗和千粒重；
Inoculation tests showed that Hirschmanniella oryzae could cause yield losses of rice, especially reduced the number of panicles and grain weight.
用研究人员的话说来说：“水稻和大豆产量的增产和减产基本持平。”
In the words of the researchers: "For soybeans and rice, winners and losers largely balanced out."
模拟结果显示，未来水稻将减产9%，主栽区将北移至黑龙江流域；
The result of simulation shows that rice yield will decrease 9%, and the main planting area will move to Heilong River Basin.
指出用于减少水田甲烷排放的措施不应导致水稻的减产和引起其它温室气体排放的增加。
It is pointed out that any strategy to be employed for reducing methane emission from rice paddies should not cause reduction of rice yield and increase of other greenhouse gas emissions.
初步结果是 ：水稻抽穗后霜冻处理时间越早 ，对水稻产量影响越大 ，并建立了水稻受霜冻害减产预测模型 ；
The results showed that the earlier the frost and freezing treatment after heading period of rice carried out, the greater was the influence on rice yield.
干旱是人类所面临的最严重的自然灾害之一，干旱导致水稻生长发育严重受阻，生育期显著减慢，造成农作物减产。
Drought is one of the most severe natural disasters, drought has caused serious disruption to the growth and development of rice growing period significantly slowed, resulting in crop failures.
干旱造成水稻的减产可超过其它因素所造成减产的总和，严重制约着水稻的产量。
Drought has become the major abiotic stress in rice production, seriously affecting rice yield and quality.
铝是酸性土壤中限制水稻生长及矿质元素吸收而导致减产的主要因子之一。
Aluminum is one of the major constraints limiting rice productivity in acidic soil, which inhibits growth and minerals absorption of rice root.
铝是酸性土壤中限制水稻生长及矿质元素吸收而导致减产的主要因子之一。
Aluminum is one of the major constraints limiting rice productivity in acidic soil, which inhibits growth and minerals absorption of rice root.
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