合理使用良种杜绝盲目引种当前，仍有不少地区，对良种的相对性、区域性、多样性和复杂性等特点认识不足，而盲目引种，仓促推广，大调大运，结果不但未能增产增收，反而造成巨大损失，教训十分沉痛。如天津市武清县某村，１９９３年秋在未经试验鉴定的情况下，从山东某农... Reasonable use of seed to prevent blind introduction At present, there are still many areas, lack of understanding of the characteristics of the relatives, regions, diversity and complexity of the thoroughbred, and blind introduction, rush promotion, major transport, the result not only failed to increase production Increasing income, but cause huge losses, the lesson is very painful. Such as a village in Wuqing County, Tianjin, the autumn of 1993 in the unidentified case, from a farming in Shandong ...