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关于栗树的修剪,在产区历来流传着两种方法,一种是清膛修剪法,一种是实膛修剪法。经过多年的对比观察和生产实践的考验,实膛修剪比清膛修剪有显著的增产效果,一般可增产一倍以上。遵化县营坊公社河东大队现有栗树17,000株,其中成龄栗树1,300株,自1973年推广实膛修剪以来,产量逐年上升,1973年产栗13,000斤,1976年20,000斤,1978年达到25,000斤。建明公社接官厅大队有结果栗树3,000株,采用实膛修剪以后,产量由1973
On the pruning of chestnut trees, in the producing areas has always been circulating two methods, one is clear bore pruning method, one is the real bore pruning method. After many years of comparative observation and test of production practice, the real bore trimmer bore trimmer has a significant yield increase effect, generally more than doubled. There are 17,000 chestnut trees in the Hedong Brigade, Camp Township, Zunhua County, of which 1,300 are mature chestnuts. Since the promotion of real-crop pruning in 1973, the output has been increasing year by year. In 1973, it produced 13,000 kg of chestnuts and 20,000 kg in 1976. Reached 25,000 pounds. Jian Ming commune then Guanting brigade has the results of chestnut trees 3,000 strains, with real bore pruning, the yield from 1973