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板栗是经济价值很高的木本粮食。发展板栗对备战备荒、出口换取外汇、繁荣山区经济和支援国家建设均有重要意义。北京郊区的板栗树历来都用实生繁殖,后代严重分离,品质良莠不齐,结果晚,产量低。据1975年怀柔县黄坎公社四渡河大队调查6789株结果树,平均单株产量为6.38斤,其中空蓬栗等劣种树占17.8%。因此,从现有的栗树中选出良种並加以利用,使板栗达到丰产稳产和逐步实现良种化,是当前生产急待解决的问题。我所的板栗选优工作从1973年开始,1973—1975年在各地群众推荐下,先后从怀柔、昌
Chestnut is a woody food of high economic value. The development of chestnuts is of great significance in preparing for war preparedness, exporting for foreign exchange, prospering the economy in the mountainous areas and supporting the construction of the country. Chestnut trees in the suburbs of Beijing have always been propagated in real life, and their offspring are severely separated. The quality varies greatly and the results are late and the yield is low. According to the survey of 6789 trees in Huangdu Commune in 1949, Huangkan commune, Huainan County, the average yield per plant was 6.38 kg, accounting for 17.8% of the total. Therefore, it is urgent for the current production to select the good seed from the existing chestnut tree and make use of it to make the chestnut yield high and stable and gradually realize the thoroughbred planting. Chestnut selection of our work from 1973 onwards, 1973-1975 recommended by the masses around, successively from Huairou, Chang