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烟台市有栗树500余万株,1970年前后产栗实尚不足25万公斤,亩产不足5公斤。低产的主要原因是长期采用种子繁殖造成的。为此,本所于1973年设立了《板栗良种选育》课题,经过几年的努力,已选出烟清、烟泉等良种。现将选育过程及其特性报告如下。
There are more than 500,000 chestnut trees in Yantai City. Before 1970’s, the yield of chestnut tree was less than 250,000 kg and less than 5 kg per mu. The main reason for low yield is the result of prolonged adoption of seed multiplication. To this end, the Institute established in 1973, “Chestnut Breeding” project, after several years of efforts, have been selected Tobacco, tobacco and other fine varieties. The breeding process and its characteristics are reported below.