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以核桃嫁接苗为试验材料,研究其在土施、喷施不同浓度PP333、不同高度的摘心和不同强度的修叶等处理条件下,苗木鲜质量和干质量之比、枝条经-25℃处理后电导率的变化。结果表明:土施一定浓度的PP333能显著提高核桃苗木的木质化程度,抗寒能力可以通过轻度修叶和一定浓度土施PP333来提高。
The walnut grafted seedlings were used as experimental materials to study the effects of different concentrations of PP333, different times of topping and leaf pruning treatments on the fresh weight and dry weight ratio of the seedlings. The branches were treated at -25 ℃ After the conductivity change. The results showed that PP333 could increase the lignification degree of walnut seedlings significantly, and the ability of cold resistance could be improved by mild foliar amendment and PP333 with certain concentration.