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1985年,农牧渔业部从美国引入珂字棉304共500磅,在湖北、河南、山东、河北等省试种,在山东减产约20%,此后,大体确定不再引种。1985年,国家标准局发布了《农作物种
In 1985, the Ministry of Agriculture, Animal and Animal Husbandry and Fishery introduced a total of 500 pounds of cotton from the United States to the Cushupian 304 for testing in Hubei, Henan, Shandong and Hebei provinces, and about 20% in Shandong. Since then, it has been generally decided not to introduce any more. In 1985, the National Bureau of Standards released the "crop species