几种伴生植物水浸液对杉木生长的影响研究

Allelopathy effects of aqueous extracts of aerial parts of several associated plant species on the growth of Chinese fir seedlings.

用8种杉木伴生植物及杉木的茎和叶不同浓度水平(水平Ⅰ为166.7g/kg,水平Ⅱ83.3g/kg,水平Ⅲ41.7g/kg·水平Ⅳ20.8g/kg)的水浸液浇灌盆栽杉本幼苗,连续观测6年结果表明8种植物水浸液浇灌后杉木高度与地径比对照Ⅰ(浇灌杉木自身水浸液)和对照Ⅱ(仅浇灌清水)均有不同程度提高。不同浓度水浸液对杉木高度和地径的促进作用依次为水平Ⅰ>水平Ⅱ>水平Ⅲ>水平Ⅳ>对照Ⅱ,不同植物水浸液对杉木株高的促进作用则为木荷>檵木>椤木石楠>狗脊>丝粟栲>赤楠>马尾松>芒萁>杉木(对照Ⅰ)

The growth of Chinese fir ( Cunninghamia lanceolata )seedlings treated with aqueous extracts of aerial parts of 8 kinds of associated plants and those of Chinese fir itself in different consistencies levels (level Ⅰ : 166. 7g/kg, level Ⅱ : 83.3g/kg, level Ⅲ : 41 . 7g/kg, level Ⅳ : 20. 8g/kg) were surveyed for 6 years. The results show that all the Chinese fir seedlings treated with the aqueous extracts of these associated plants grow faster than those of treated with aqueous extracts of Chinese fir itself (control Ⅰ )and treated with clean water only (control Ⅱ ). The order of promotion of the aqueous extracts of the plants to height and base diameter growth of Chinese fir seedlings is level Ⅰ > level Ⅱ > level Ⅲ > level Ⅳ > control Ⅱ , and the order of promotion of the aqueous extracts of the plants to height growth of Chinese fir seedlings is Schima superba > Loropetalum chinense > Photinia davidsoniae > Woodwardia japonica > Castanopsis fargesii > Syzygium buxifolium > Pinus massomana > Dicranoptens dichotoma > Cunninghamia lanceolata (control Ⅰ ).