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在洛南不同区域、不同时期的试验结果表明 ,限制核桃芽接成活率的主要制约因子包括气温 (嫁接期 )、接前放水、复叶保留和嫁接速度 ;制约因子的有效控制为 :适宜嫁接期为 6月1 0日至 7月 1 0日 ,最佳期为 6月 2 0至 6月 30日 ;气温 2 0 .0～ 2 3.0℃ ,2 2 .0℃～ 2 2 .5℃最佳 ;采取接前 2～ 3d灌水 ,2 d最佳 ;同步进行 2～ 3片复叶保留 ;操作方法正确、熟练 ,在 1 min内完成单株嫁接即可显著提高核桃嫁接苗木的成活率
In different regions of South China, the results from different periods showed that the main limiting factors restricting the survival rate of walnut budding include temperature (grafting), water release, compound leaf retention and grafting speed; the effective control of the control factors is: appropriate grafting For the June 10 to July 10, the best period of June 20 to June 30; temperature 20.0 ~ 2 3.0 ℃, 22.0 ℃ ~ 22.5 ℃ best ; To take the first 2 to 3 days before irrigation, 2 d the best; simultaneous 2 to 3 leaves to keep compound; operation method is correct and skilled in 1 min to complete the grafting of grafts can significantly increase the survival rate of walnut grafted seedlings