黑龙江西部农林复合经营区欧李嫩枝扦插试验初报

Softwood Cuttings of Cerasus humilis in Agroforestry Area of Western Heilongjiang Province

欧李是一种重要的、极具推广价值的生态经济型小灌木。为了在气候条件较为干旱的黑龙江西部农林复合经营区推广这一树种,提高该区农林复合经营的生态经济功能,以扦插时间、不同浓度生根粉处理、不同带叶情况处理为因素,采用正交试验设计开展了欧李嫩枝扦插试验。结果表明:3个因素对欧李嫩枝扦插愈伤组织的形成、生根的影响都是显著的,其中,对愈伤组织的形成,3个因素影响大小依次为带叶情况>扦插时间>生根粉处理,对于生根率,则是带叶情况>生根粉处理>扦插时间;3个因素最佳处理组合为带2片子的插穗、采用200mg·L-1 ABT1号生根粉浓度处理、5月30日扦插,可使扦插生根率达到90%以上。

Cerasus humilis is an important eco-economy small shrub with highly promoted value.In order to promote this species in agroforestry area with more arid climatic conditions of the western Heilongjiang,improve ecological and economic functions in the area of agroforestry,taking different cutting time ,different concentrations of ABT, taking treatments with different leaves as factors,softwood cuttings of Cerasus humilis by adopting orthogonal de-sign were carried out.Result shows that:the effect of the three factors on the formation of callus for Cerasus humi-lis softwood cuttings and their rooting are significant;for the formation of callus,the descending order of the three factors is the treatment with different leaves>cutting time>treatment with ABT powder;for rooting rate,the de-scending order of the three factors is the treatment with different leaves > treatment with ABT powder > cutting time;the optimal treatment is the combination (cuttings with two leaves+200 mg L-1 ABT1 rooting powder+May 30)by which the cutting root rate can reach above 90%.