讷河市是黑龙江省大豆主产区之一,常年面积在 10万公顷左右,平均 667平方米产 150公斤,被国家定为优质大豆生产基地.但 1999年大豆生产过程中,出现了前所未有的大面积严重落花落荚和花而不实现象；严重落花落荚的 1 4万公顷, 667平方米仅产 40公斤左右,无荚绝产面积 0 4万 Nehe City, Heilongjiang Province is one of the main producing areas of soybean, perennial area of ​​100,000 hectares, with an average of 667 square meters 150 kilograms, the country as a high-quality soybean production base.But in 1999 the soybean production process, there has been an unprecedented large The area of ​​serious falls to fall pods and flowers and not to achieve the same; serious falling off pods 14,000 hectares, 667 square meters only produce about 40 kg, pod-free area of ​​40,000