Nghiên cứu kỹ thuật giâm hom tre điền trúc (Dendrocalamus latiflorus Munro)

Abstract

This study was carried out to assess propagation techniques by cuttings for Taiwan giant bamboo in Thua Thien Hue, by using growth regulators to treat on cuttings of long-sized bamboo trees 3 eyes long, and at the same time, choose a suitable multiplier to make a suitable seed pot. The most suitable auxin for the cutting method of Taiwan giant bamboo is IBA (survival rate reached 93.3% when using IBA, 60% when using IAA and 66.7% when using NAA), concentration type IBA auxin suitable for treatment of rooting stimulant is 900ppm (survival rate is 93.3%, plant height is 52.8 cm, leaf length is 27.7 cm, leaves are 3.9 cm wide, reaching 5.3 nodes, 5.3 twig and the total number of leaves is 30.2 leaves/ cuttings); The most suitable type of cuttings for cuttings is the middle age twig with a size larger than 1.5 cm (germination time is 9 to10 days, leaf time is from 15 to 16 days, roots are sprouted after 32 days, after 45 days) with finished plants, survival rate is from 80.0 to 93.3%, plant height is from 43.7 to 48.2 cm, leaf length is from 24.2 to 24.3 cm, leaf width is from 3.4 to 3.8 cm, the number of nodes is from 4.0 to 4.3, the number of twig is from 5.2 to 6.0, and the total number of leaves is from 23.7 to 30.0 leaves/cuttings). The suitable potting medium composition is: 69% light soil, 20% rotting manure, 10% charred rice husk charcoal or dried water hyacinth root and 1% superphosphate to help plants grow well (survival rate reaches 80.0%, after the plants reach standards to grow 45 days, tree height reached 58.7 cm, the number of twig reached 6.5 and the total number of leaves reached 33.2 leaves/cuttings).