耕作仅是粮食产业链中一部分，由一端的肥料和种子公司延伸到另一端的市场。

Farming is just one part of a food chain that stretches from fertiliser and seed companies at one end to supermarkets at the other.

俄勒冈州塞勒姆的西海岸甜菜种子公司的前经理伯特在退休前帮助建立了这个系统。

George Burt, the former manager of the West Coast Beet Seed Co. in Salem, helped set up this system before he retired.

宾夕法尼亚州沃明斯特的一家大种子公司，W.AtleeBurpee3 月份的菜籽销量，比如绿豆、土豆、黄瓜、南瓜、莴苣等等，上涨了 30%。

Sales of vegetable seeds such as green beans, tomatoes, cucumbers, squash and lettuce climbed 30 percent as of March at W. Atlee Burpee, a large seed company in Warminster, Pa.