Effects of shading on matter accumulation, bulb yield and cut flower morphologic quality of Lycoris radiata

The effects of different shading treatments on the dry matter accumulation, leaf area, specific weight, root growth, bulb yield and diameter, flower count, flower stem length, average number of flowers per truss, flower diameter, and the highest net photosynthetic rate of Lycoris radiata were studied using a randomized block experimental method. The results showed that the total dry matter weight, specific leaf weight, average bulb stem neck diameter, root number, root length, and the root diameter decreased with the increasing of shading degree. On the contrary, the average leaf area significantly increased with the increasing of shading degree. Under four shading treatments, 0% shading treatment got the maximum total dry weight and the bulbs dry weight, while 45% shading treatment got the largest leaf dry weight, bulbs number, flower count, flower stem length, average number of flowers per truss, flower diameter, and the highest net photosynthetic rate. These results indicated that 45% shading treatment was the appropriate cultivation method of improving lycoriss cut flower production, 0% shading treatment was the suitable cultivation method for the purpose of bulbs harvest.