美国山核桃采穗圃定干修剪试验初报

摘要

In order to understand and improve the germination and growth abilities of the Carya illinoensis cutting orchard, pruning trials were carried out at stem of 40, 60, 80 cm height, taking no pruning as CK. The results showed that leader branch cutting height of 60 cm could significantly improve grown branch rate and scion utilization rate in fine clone cutting orchard of C. Illinoensis, which were respectively 61. 05% and 56. 54%. Based on the results of the trails, some technical measures were summaried to improve C. Illinoensis scion utilization rate.%为了解和提高美国山核桃良种无性系采穗圃植株定干修剪后的萌芽能力和抽枝能力,对采穗圃植株分别进行了定干40、60、80 cm的修剪试验,以不定干处理的为对照.结果表明:定干60 cm修剪,能明显提高美国山核桃良种无性系采穗圃内植株的成枝率和接穗利用率,其成枝率和接穗利用率分别为61.05％和56.54％.并在试验基础上总结出了提高美国山核桃接穗利用率的定干修剪技术措施.