Rice, of paddy, widely grown in asia from afghanistan to Indonesia and north to Japan, is the principal food for 60 percent of mankind. It is also a staple in parts of africa, South america, and to some extent in the southern United States.

稻，即通常所说的水稻，广泛种植于从阿富汗至印度尼西亚、北至日本的亚洲各国。它是60%人类的主要食粮，也是非洲、南美洲以及美国南部一些地区的主食。

属类：行业术语-农业-农作物

World production exceeds 300 million metric tons annually, mostly from Far East.

全世界稻米的年产量超过3亿公吨，大部分产自远东。

属类：行业术语-农业-农作物

Rice has been cultivated in China for more than 5,000 years. It is thought likely to have originated from wild perennial forms in Southeast asia.

中国种植水稻已有5千多年的历史。有人认为水稻起源于东南亚的多年生野生植物。

属类：行业术语-农业-农作物

For practical purposes rices are generally classified as long-grain, medium-grain and shortgrain.

水稻通常分为长粒型、中粒型和短粒型。

属类：行业术语-农业-农作物

The long-grain types need a longer season to mature, and hence are grown mostly in tropical regions, such as Southeast asia.

长粒型水稻要经过较长的生长期才能成熟，所以大部分种植在像东南亚那样的热带地区。

属类：行业术语-农业-农作物

Connoisseurs prefer the long-grain type, which is nonglutinous and does not turn so soft and sticky when cooked. Medium grain rices, somewhat softer, are most frequently grown in america.

饮食行家喜食长粒米。这种米无粘性，煮后不会变得太软太糊。中粒米要软些，主要产在美国。

属类：行业术语-农业-农作物

Short-grain types, even more starchy when cooked, are well adapted to more northerly climates, such as that of Japan.

短粒米煮后最粘糊，很适合在偏北的气候条件下(如日本)种植。

属类：行业术语-农业-农作物

Most rice is grown in paddy fields of standing water. There are, however, various forms of upland rice, cultivated in much the same way as any small grain.

稻大多种在能长期蓄水的水田里。不过还有许多类型的陆稻，其栽培方法同其它小粒谷物大致一样。

属类：行业术语-农业-农作物

Upland rice yields tend to be lower, and its importance is not great; for example, in Indonesia, more than 90 percent of the rice is grown in irrigated paddy land.

陆稻的产量较低，重要性不大。以印度尼西亚为例，99%以上的稻种在能灌溉的水田里。

属类：行业术语-农业-农作物

The best rice land is level, conveniently diked for alternating irrigation and drainage.

稻田最好是在平地上，筑田埂以利排灌。

属类：行业术语-农业-农作物

Only one percent of the world’s rice is grown in the United States but in a technologically advanced fashion. Sometimes rice is sown by aircraft, especially in California.

美国种植的水稻只占世界产量的1%，但种植技术先进。有时用飞机播种，在加利福尼亚尤为普遍。

属类：行业术语-农业-农作物

China and Japan practice the most progressive rice growing in the Orient. Yields average nearly 4 tons per hectare and can be as high as 10 tons.

在东方各国，中国和日本的水稻栽培法最为先进。产量平均约4吨;公顷，最高可达10吨;公顷。

属类：行业术语-农业-农作物

Under more primitive circumstances, such as those that prevail in many of the tropical lands, rice growing is an exceedingly laborious and time-consuming hand operation.

在比较原始的环境中，例如在许多热带地区普遍存在的那类环境，水稻种植是一种非常费力费时的手工作业。

属类：行业术语-农业-农作物

The sweet potato is one of the top ten food crops in the world. The plant is easy to grow. Insects and diseases rarely harm it.

甘薯是世界上10大粮食作物之一。容易种植，不大遭受病虫危害。

属类：行业术语-农业-农作物

Tubers on its roots contain a good supply of starch, protein and vitamins a and C. and its leaves are also rich in protein and vitamins.

根系上结的薯块含有大量淀粉、蛋白质和维生素a和c。叶片也富含蛋白质和维生素。

属类：行业术语-农业-农作物

Sweet potato plants can survive in any temperature above freezing. However, the hotter the temperature, the faster they grow.

只要温度在冰点以上，甘薯苗即能成活。但温度愈高，生长则愈快。

属类：行业术语-农业-农作物

They need water when they first start growing, but after their roots start producing tubers they can survive in extremely dry weather.

甘薯苗刚开始生长时需要浇水，但根上开始结薯后，在极干旱的条件下也能存活。

属类：行业术语-农业-农作物

There are many different kinds of sweet potatoes. Some can be harvested about ten weeks after planting. Others may take as long as nine months.

甘薯有许多种:有的种下后10周即可收获，有的可能要9个月之久。

属类：行业术语-农业-农作物

a one-hectare field will produce from four to twenty tons of sweet potatoes, depending on the kind you choose.

根据你选用的品种的不同，每公顷产量4至20吨不等。

属类：行业术语-农业-农作物

Sweet potatoes usually are grown in loose sandy soil. This permits the roots to spread easily. It produces more tubers.

甘薯通常种植在疏松的砂质土里。这使根系容易蔓延，结薯更多。

属类：行业术语-农业-农作物