Second, yield growth has been lower in wheat and rice than in corn and soyabeans.
其次，小麦和水稻的产量增长一直低于玉米和大豆。
This is problematic because wheat and rice are more important as foods, accounting for around half of all calories consumed.
这是有问题的，因为小麦和大米作为食物时更为重要，约占卡路里消耗总量的一半。
The world's population is expected to reach 7,000 million by the year 2000, but already scientists have produced new and better varieties of wheat and rice and animal.
到2000年，世界人口预计将达到70亿，但是科学家已经培育出了新的、更好的小麦、水稻和动物品种。
他们生产小麦、稻谷。
小麦和水稻是谷类植物。
They grow wheat and rice every year.
他们每年种小麦、水稻。
Farmersareplanting more wheat and rice.
农民种植更多的小麦和大米。
A cogwheel is placed where the wheat and rice stems cross at the base.
齿轮安在下方麦稻杆的交叉点上。
IT IS the world's fourth-most-important food crop, after maize, wheat and rice.
在世界的粮食作物中，它的重要性仅次于玉米、小麦和稻谷。
Scientists were successful in breeding high-yield types of wheat and rice.
科学家们成功地培育出高产的小麦和水稻品种。
Other staples in the Indian diet, such as lentils, vegetables, wheat and rice are also more expensive.
印度膳食中的主要作物，例如扁豆，蔬菜，小麦和稻米的价格均出现上涨。
Pigs, chickens and other farm animals are generally fed corn and barley, while people eat mainly wheat and rice.
猪，鸡和其他家畜通常用玉米和大麦饲养，而人食用的主要是小麦和稻米。
Series of feasible means of all wheat and rice straw application without chopping and cultivation were put forward.
提出了一套简单易行的麦稻秸秆全量整草免耕还田方法。
Silk, bamboo, linen, wheat and rice straw were all used differently, and paper made with silk became the first type of luxury paper.
丝绸，竹子，亚麻，麦杆和稻杆都不同程度地被用于制造纸张，而丝绸制造的纸张成了奢侈纸张的首要类型。
Farmers in the Indian state of Punjab, traditionally wheat and rice growers, have long relied on groundwater to irrigate their crops.
旁遮普邦的印度农民传统上种植小麦和水稻，他们长期以来依靠地下水灌溉庄稼。
This year the floor price for the purchase of wheat and rice will be increased by 0.22 yuan and 0.26 yuan per kilogram on average respectively.
今年小麦、稻谷最低收购价平均每斤分别提高0.11元和0.13元。
Sweet potatoes and yams are packed with more beta carotene and vitamin C than carrots, more protein than wheat and rice and more fiber than oat bran.
地瓜和土豆比胡萝卜含有更丰富的β胡萝卜素和维生素C，比大米和小麦含有更多的蛋白质，比燕麦含有更多的纤维。
After 180 days, the coarse fibre of wheat and rice were remained by 15.3%, 21.5%, the lignin and coarse ash were showing a tendency to increase.
秸秆化学组成成分分析结果表明，麦秸、稻草的粗纤维在180天后分别残留了15.3%、21.5%，油菜的粗纤维分解相对较慢，三种秸秆的木质素和粗灰分均有增加的趋势。
Both pot and plot tests were carried out to study the effects of nickel on wheat and rice grown on calcareous soil with nickel containing sludge applied.
采用盆栽和小区试验，研究了在石灰性土壤中镍污染对小麦和水稻的影响；
But that is because the virtues of the world's fourth biggest food crop (after maize, wheat and rice) and its influence on world history are easily overlooked.
不过，这是由于人们很轻易地忽略了这种全球第四大粮食作物(仅位于玉米、小麦和水稻之后)的优点和它对人类历史上的影响的缘故。
This year's domestic wheat and rice production has increased and will be sufficient to meet demand, and therefore grain prices will be broadly stable next year;
今年国内小麦和大米产量增加，足以满足需求，因此明年粮食价格将有望保持平稳；
For the first time since the 1960s the yields of the world's most important crops, wheat and rice, are rising more slowly than the global population (see special report).
当前是自二十世纪六十年代以来，世界上第一次出现重要农作物——小麦和大米——产量的增幅小于全球人口增长(请阅读专题报道)。
A field experiment was conducted to study the nutrient balance and economic benefit on winter-wheat and rice system with mid-stage effluent of ammonium sulfite method irrigation.
通过田间实验，研究亚铵法制浆中段水经土地处理的同时作为灌溉用水的农田养分平衡状况及经济效益。
Wheat and rice began to grow again, and all the living creatures sang and grunted and roared with pleasure at the taste of cool water, at the feel of soft earth beneath their feet.
小麦和稻米开始再次生长，而其他的生物，或高声歌唱，或轻哼调子，或高兴吼叫！一同享受清凉的雨水，一同感受他们脚下柔软的泥土。
In Chicago, wheat and rice prices for delivery in March 2008 have jumped to an all-time record, soyabean prices have surged to a 34-year high and corn prices have hit a 11-year peak.
在芝加哥，2008年3月交割的小麦和糙米期货价格均跃升至历史最高水平，大豆期货价格创下34年新高，玉米价格也升至11年高点。
In Chicago, wheat and rice prices for delivery in March 2008 have jumped to an all-time record, soyabean prices have surged to a 34-year high and corn prices have hit a 11-year peak.
正在芝加哥，2008年3月交割的大麦和糙米期货价格均跃升至历史最高水平，大豆期货价格创上34年旧高，玉米价格也升至11年高点。
Minimum purchase prices and temporary purchase and storage policies were put in place for key grain varieties, and the minimum purchase prices for wheat and rice were raised by between 25% and 40%.
对重点粮食品种实行最低收购价和临时收储政策，小麦、稻谷最低收购价提高了25%到40%。
Yemen, one of the poorest countries in the world, is still struggling to recover from the 2007-2008 global food crisis, which saw a dramatic rise in the price of such staples as corn, wheat and rice.
也门是世界上最贫困的国家之一。眼下，它仍在努力从2007- 2008年的食品价格危机中复苏。
Yemen, one of the poorest countries in the world, is still struggling to recover from the 2007-2008 global food crisis, which saw a dramatic rise in the price of such staples as corn, wheat and rice.
也门是世界上最贫困的国家之一。眼下，它仍在努力从2007- 2008年的食品价格危机中复苏。
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