据美国《1991年烤烟情报》介绍,1990年北卡罗来纳州各县推广机构根据当地种子商出售烟种的数量,估计该州种植的烤烟品种及其所占比例如下。K326,占58%;K399,占6%;北卡37NF,占5%;SpeightG—28,占4%;K394,占4%;K149,占3%;K358,占3%;SpeightG—70,占3%;其它品种占14%。Northrup King’s 种子公司育成的 K326品种,自1984年在北卡成为最受欢迎的品种以来,到1990年已成为整个北卡罗来纳州烟区最普遍种植的当家品种,增长幅度从边沿烟区的 According to the United States, “1991 Flue-Cured Tobacco Information,” introduced in 1990, counties in North Carolina promotion agencies based on the number of local seed vendors sell tobacco, estimated that the state planted varieties of flue-cured tobacco and its share are as follows. K326, accounting for 58%, K399, accounting for 6%, North Carolina 37NF, accounting for 5%, SpeightG-28, accounting for 4%, K394, accounting for 4%, K149 accounting for 3%, K358, accounting for 3% Accounting for 3%; other species accounted for 14%. The K326 variety bred by the Northrup King’s seed company, which became the most popular variety throughout North Carolina since 1990, became the most popular variety in North Carolina since 1990, increasing from near-edge tobacco