扦插季节与植物生长调节剂对交趾黄檀扦插效果的影响

Effect of Cutting Season and Plant Growth Regulator o n Cutting Effect of Dalbergia cochinchinensis

为了解决生产上对交趾黄檀扦插育苗技术的需求,于2016年秋季、冬季和2017年春季,在福建省龙海林下国有林场西蝉苗圃,开展秋季、冬季和春季不同时间扦插试验,结果表明,以春季(3月中旬)扦插的效果最好,平均成活率、成苗率、未生根率分别为90.93%、82.28%、8.5%;进一步开展GGR号生根粉不同浓度扦插育苗试验,结果表明,以GGR号生根粉300 mg·L^(-1)溶液浸穗条扦插口1 h或1000 mg·L^(-1)溶液浸穗条扦插口60 s扦插效果较好,平均成活率、成苗率、未生根率分别为94.87%、89.53%、3.91%或82.46%、77.19%、7.02%,苗木生长健壮,根系发达。因此,在福建漳州地区,交趾黄檀扦插育苗宜在3月中旬扦插,使用GGR号生根粉300 mg·L^(-1)溶液浸穗条扦插口1 h或1000 mg·L^(-1)溶液浸穗条扦插口60 s,扦插成活率高,效果好,可以在生产中推广应用。

In order to solve the technical requirements of cutting and breeding of Dalbergia cochinchinensis in production,the cuttage tests were carried out at different times in autumn,winter and spring in autumn,winter and spring of 2016 in Xichan Nursery of the State-owned Forest Farm under the Longhai Forest in Fujian Province.The results showed that cutting in spring(mid March)had the best effect,with an average survival rate,seedling rate,and rootless rate of 90.93%,82.28%and 8.5%;further experiments were conducted on different concentrations of GGR rooting powder for cutting and seedling cultivation.The results showed that soaking the cuttings with GGR rooting powder 300 mg·L^(-1) solution for 1 hour or 1000 mg·L^(-1) solution for 60 seconds had a good cutting effect.The average survival rate,seedling rate,and non rooting rate were 94.87%,89.53%,3.91%or 82.46%,77.19%and 7.02%,respectively.The seedlings grew strong and had well-developed roots.Therefore,in the Zhangzhou area of Fujian Province,it is advisable to use GGR rooting powder 300 mg·L^(-1) solution to soak the cuttings for 1 hour or 1000 mg·L^(-1) solution to soak the cuttings for 60 seconds in mid March for the cutting and seedling cultivation of Coptis chinensis.The cutting survival rate is high and the effect is good,which can be promoted and applied in production.