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1981年以З·克鲁格曼博士为首的美国树种改良考察组到我国一些科研和生产单位做了短期考察,每到一处我们部在参观的基础上组织了双方专家的座谈讨论,现将美国专家沿途根据所见到的情况和我方人员提出的问题做的一些回答,整理如下。一、树种改良方面 1.树种选择:除东北地区外,一路看的大都是少数引进树种的改良工作。专家们多次指出研究重点应放到当地原产树种上,说美国就很少大面积应用引入树种造林,树种改良要
In 1981, the inspection team headed by Dr. Krugman made short-term visits to some scientific research and production units in China. Each visit to our department organized a panel discussion of experts from both sides. Some answers made by U.S. experts along the way on the basis of what they have seen and the issues raised by our staff are summarized below. First, the improvement of species 1. Tree species selection: In addition to the northeast region, most of the way to see the introduction of a small number of species improvement work. Experts have pointed out on many occasions that research should be focused on local native tree species, saying that the United States has seldom applied large-scale tree planting for afforestation and improved tree species