Are any of the sorghums indigenous to North america?

高粱也有原产在北美的吗?

属类：行业术语-农业-农作物

They’ve been introduced from all over the world.

全是从世界各地引进来的。

属类：行业术语-农业-农作物

Some of them are taller than the ones we’ re more familiar with, arch’ t they?

有些高粱比我们熟悉的那种要高，是不是?

属类：行业术语-农业-农作物

There are varieties that grow at least fifteen feet tall.

有些品种至少能长到15英尺高。

属类：行业术语-农业-农作物

And they have different types of panicles?

它们的穗也有不同吧?

属类：行业术语-农业-农作物

The panicle may be short and closely bunched, or it may be long and open, with side branches which bend downward.

有的短而紧凑，有的长而披散，侧枝下垂。

属类：行业术语-农业-农作物

How are the sorghums as livestock feed?

用作饲料的高粱怎样?

属类：行业术语-农业-农作物

Swine especially like sorgo. But as a grazing crop, sorgo is dangerous for cattle and sheep when the plants are young or when new growth has taken place on older plants.

猪特别喜欢芦粟。但当芦粟还没长大，或在老植株上长出新株的时候，芦粟作为放牧作物，对牛羊来说是危险的。

属类：行业术语-农业-农作物

In some parts of the world cotton is still grown and handled in a relatively unmechanized fashion. In Ethiopia, for example, cotton still supports a cottage industry.

在世界上的一些地区，棉花的种植与处理仍然谈不上机械化。例如在埃塞俄比亚，棉花仍然以家庭手工业方式经营。

属类：行业术语-农业-农作物

american varieties have been introduced and are gaining favor. These have crossed with Old World cottons, perhaps first introduced from India during Roman times.

美洲棉品种已经引进，并逐渐受到欢迎。美洲品种同东半球品种杂交(东半球品种最早可能是罗马帝国时代从印度传人的)。

属类：行业术语-农业-农作物

all are grown as short-lived perennials, the planting lasting for about five years.

这些棉花全都是作为短期多年生植物种植的。植株大约生长5年。

属类：行业术语-农业-农作物

The fibers are harvested mostly by hand, and the spinning and weaving are largely done at home.

大多由手工采摘，而且多数在家里纺织。

属类：行业术语-农业-农作物

Such hand crafting permits the use of variable cotton fiber, which can be separated for staple length and selected for different spinning qualities.

这种手工作业可以利用各种不同的棉花纤维，并可按纤维的长度分类，选择用于不同质量的纺织品。

属类：行业术语-农业-农作物

It is interesting that machine-ginned cotton is rejected by the spinners as inferior to cotton separated by hand.

有趣的是，纺织厂不愿接受机器扎的棉花，说它的质量比不上手工剥的棉花。

属类：行业术语-农业-农作物

"The preferred hand ""ginning"" is accomplished simply by pulling the fiber from the seed with the fingers. The cotton plant is also used for other than its fiber. Leaves, flowers, seeds, and roots are all reputed to have medical value. "

手"轧"棉花只不过是用手指把棉纤维从棉籽上扯下来而已。除纤维而外，棉株其它部分也能派上用场。叶、花、种子、根都被认为有药用价值。

属类：行业术语-农业-农作物

Quite contrast is the highly automated and business-like production of cotton in parts of the southern United States, where the plant is grown as an annual and the land clean-cultivated.

与此形成对照的是，美国南部一些地区的棉花生产已实现高度机械化和企业化，棉花作为一年生作物种植，棉田管理十分整洁。

属类：行业术语-农业-农作物

The most remunerative growing has shifted from the traditional southeastern producing region to the irrigated lands of the Southwest.

经济效益最好的植棉业已从传统的东南棉区转移到西南部的大片灌溉地。

属类：行业术语-农业-农作物

Remunerative cotton growing demands a long frost-free season, moderate moisture, and either ample labor or well-capitalized mechanization.

种棉要有好的效益，必需要有较长的无霜期、适当的湿度、充足的劳力，不然就必需有投资巨大的机械设备。

属类：行业术语-农业-农作物

Without extensive mechanization it is estimated that cotton requires about 150 man-hours per acre, a greater labor input than for any other major crop.

据估计，若无充分的机械化，种植1英亩棉花约需150个工时。这比种植其它任何主要农作物投入的劳力都多。

属类：行业术语-农业-农作物

This crop is grown for the oil, extracted from its small black seed, and used for the manufacture of margarine, cooking-fats, and specialized lubricants for jet engines.

种油菜是为了从细小的黑色油菜籽中榨油，并用来制造麦淇淋(人造黄油)、食用油和供喷气机用的特种润滑剂。

属类：行业术语-农业-农作物