棕榈北引方兴未艾《南棕北引丛谈》栏日到此要告一段落了。1年多来,编辑部及我都曾接到许多读者来信来电,表达对棕榈北引的浓厚兴趣,他们或交流引种成果,或就疑难问题切磋商榷,或就扩大引种进行规划、咨询,让人强烈感受到棕榈引种事业大步北上,方兴未艾的势头。下面我就读者反应较集中的问题及重大引种成果做一评述,结合专家解惑、院士点评、作者感怀,为本栏日做个结束一长江是棕榈引种的北限吗?专家解惑实践为证读者反应较多的是对“引种北限”的疑虑,这一疑虑来源于2006年春发表在报纸和网络上的题为《耐寒棕榈如何冲出重围》这篇文章。该文在讲述棕榈引种面临“北有寒 Palm North cited the ascent of “South Palm North cited Cong Cong talk about the column date to come to an end. For more than a year, both the editorial department and I have received many letters from readers who expressed their deep interest in Palmetto. They exchanged views on or introduced the results, discussed or discussed the problems, or planned to expand the introduction, People strongly feel the introduction of the palm stride north, the momentum of the ascendant. Below I react to the reader more focused on the issue and a major introduction to make a comment, combined with expert puzzled, academicians comments, the author feel for the end of the column to do a Yangtze River is the northern limit of palm introduction? Readers are more worried about the ”introduction of the Northern Limit,“ the suspicion stems from the spring of 2006 published in the newspaper and the Internet entitled ”Cold hard palm out of tight encirclement,“ this article. This article is about the introduction of palm faced ”north cold