论文部分内容阅读
(一)美国美国是世界食用菌生产的大国,栽培的种类几乎都是双孢蘑菇,近年来也开始栽培香菇和平菇。双孢蘑菇主要集中在宾夕法尼亚和其他东部地区。据美国农业部的统计,1990年食用菌产量为327000吨(鲜),其中双孢蘑菇324000吨。虽然双孢蘑菇的生产者有所减少,但是经营规模扩大了,面积和生产量都有增加趋势。蘑菇鲜销占总产量的70%,每kg 约1.5美元。在搞大规模的商业栽培时,力图使栽培设施现代化,提高经营效率。由于美国的蘑菇生产曾受到中国蘑菇出口的冲击,价格暴跌。“六·四”事件
(A) The United States The United States is a large country in world edible fungus production, almost all types of cultivation are Agaricus bisporus, mushrooms and mushrooms have also begun in recent years cultivation. Agaricus bisporus is mainly concentrated in Pennsylvania and other eastern regions. According to the statistics of the U.S. Department of Agriculture, the output of edible mushrooms in 1990 was 327,000 tons (fresh), of which 324,000 tons were Agaricus bisporus. Although the production of Agaricus bisporus has decreased, its scale of operation has expanded and both its area and its production have been on the increase. Fresh mushrooms account for 70% of the total production, about 1.5 US dollars per kg. When engaging in large-scale commercial cultivation, we strive to modernize the cultivation facilities and enhance the operational efficiency. Prices have plummeted as U.S. mushroom production has been hit by Chinese mushroom exports. "June Fourth Incident