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本刊讯4月3日~6日,“科学、合理、安全使用神农丹培训及研讨会”在河北省唐山市召开,会议由全国农技推广中心梁桂梅处
Our Journal April 3 ~ 6, “scientific, rational and safe use of Shen Nong Dan training and seminars ” held in Tangshan City, Hebei Province, the meeting by the National Agricultural Technology Promotion Center Liang Guimei