crop是什么意思？

But this and other price shocks were event-driven—drought in the Soviet Union, crop-shrinking heat in the U.S.Corn Belt.

But that potential pales beside the never-ending demand for crop-based fuels.

As water tables have fallen and irrigation wells have gone dry, China's wheat crop, the world's largest, has declined by 8% since it peaked at 123 million tons in 1997.

But Mr.Kibara says he has not received a higher price for his purple tea crop.

Barley was an unexpected find: the crop was domesticated in Western Eurasia and didn't become a staple food in central China until about 2,000 years ago, according to the researchers.Based on that timing, they indicate barley may have 34 arrived in the re

Barley was an unexpected find: the crop was domesticated in Western Eurasia and didn't become a staple food in central China until about 2,000 years ago, according to the researchers.

In most cases, the human waste is used on grain crops, which are eventually cooked, minimizing the risk of transmitting water-borne diseases.

Land Usage: Over the last five decades, improved farming techniques and technologies have helped to significantly increase crop yields along with a 12% expansion of farmed land use.

Better irrigation can dramatically improve crop yield and about 40% of the world's food supply is currently derived from irrigated land

This case gives the court an opportunity to rein in the growing use of patents to protect genetically engineered crops and other life forms―but the court may well use it to give this trend a powerful new endorsement.

Major supermarkets, in meeting consumer expectations, will often reject entire crops of perfectly edible fruit and vegetables at the farm because they do not meet exacting marketing standards for their physical characteristics, such as size and appearance

This varies dramatically depending on crop, from three calories for plant crops to 35 calories in the production of beef.

Perfectly eatable fruit and vegetable crops often fail to reach supermarkets due to their size or physical appearance

They have caused lots of damage to crops.

One acre of farmland use to for crop production can produce 1,500 pounds of tomatoes.

It has consequences: South Africa's ongoing drought—the worst in three decades—will cost at least a quarter of its com crop this year.

There are good reasons why crop plants do not use dryness defenses already.