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本世纪70年代,美国因大豆孢囊线虫病蔓延,大豆种植业陷入困境。幸亏当时中美关系开始解冻,1974年8月,美国植物学代表团访华期间,在沈阳、南京、上海等地采集了野生大豆回国,培育出新的抗病良种,使猖撅一时的病害得到有效控制,大豆生产才逐渐复苏。 野生大豆是我国特产,分布在10多个省、区,叶片碧绿,花色紫红,与杂草闲花丛生,并不起眼。但若目睹它破土而出的气势,不由的令人怦然心动。那是几年前的暖春时节,我们奉命到山东省青州市仰天山进行动植物资源考
70s of this century, the United States due to the spread of soybean cyst nematode disease, soybean farming in trouble. Fortunately, the Sino-U.S. Relations began to thaw. In August 1974, during a visit to China, the delegation of botanists from the United States collected wild soybean from other places in Shenyang, Nanjing and Shanghai to breed new disease-resistant varieties so as to make the animals run rampant Under effective control, soybean production gradually recovered. Wild soybeans are our specialty, distributed in more than 10 provinces, districts, green leaves, purple flowers, and weed flowers leisurely, and inconspicuous. However, if we can see the momentum it has emerged from the ground, we can not help it. That was the warm spring season a few years ago, and we were instructed to conduct plant and animal resources test at Yang Tien Shan, Qingzhou City, Shandong Province