不同种类多孔性材料的吸水释水性能分析及其对'穿梭'百合鳞片扦插的影响OA

In order to improve the efficiency of lily scale cutting and screen suitable cutting substrates,different types of porous materials and Lilium'Tresor'were used as test materials.The structural characteristics,pore size,water adsorption,and desorption properties of different materials,as well as their effects on lily scale cutting were analyzed.The results showed that all 9 tested materials exhibited significant porous structure on the surface.Volcanic rock had the largest pore size(from 157 μm to 232 μm),while planting stone had the smallest(only 2 μm to 6 μm).The pore density(per mm2)ranged from 36 to 252,with the highest for pumice(252 per mm2)and the lowest for volcanic rock(36 per mm2).Kanuma soil had the highest water absorption(20.61 mL per 50 mL),while volcanic rock had the lowest(8.42 mL per 50 mL).At 140 h of water desorption,Akadama soil released the most water(21.36 mL),and volcanic rock released the least(9.86 mL).The porous materials were respectively mixed with peat soil at a 1∶3 volume ratio and used for scale cutting of Lilium'Tresor'.The mixture of pumice and peat soil showed the best performance,with a bulblet induction rate of 81％,rotting rate of 19％,propagation rate of 127％,average bulblet weight of 0.5 g,and average bulblet diameter of 9.77 mm.This study screened out high-quality substrate combinations suitable for lily scale cutting,providing a new perspective for substrate selection in lily bulb propagation.