Differences of Photosynthetic Related Parameters and Yield of Gin-seng Leaves under Different Ginseng Films
Four-year-old ginseng was used as the experimental material.Six treatments were se-lected for cultivation,and changes in photosynthetic efficiency and yield of ginseng under different ginseng film and shading treatments were explored.This experiment aims to find the best ginseng film material and shading methods to provide theoretical basis and technical guidance for high qual-ity and high yield of ginseng cultivation.Six treatments were set up in the experiment,namely film No.1(yellow film),film No.2(blue film for production),film No.3(light-transfer nano film),film No.4(yellow film+75％black polyethylene shading Net),No.5 film(blue film for production+75％black polyethylene shading net),No.6 film(light conversion nano film+75％black polyethylene shading net),of which No.2 film(blue film for production)was the control treatment.Photosynthetic parameters were measured in different growth periods,and finally ginseng was harvested and yield was measured to analyze the accumulation of active ingredients.Net photosynthetic rate of ginseng under the treatment of yellow film+75％black polyethylene shading net was the largest,stomatal conductance under the treatment of light-transmitting nano film was small,and intercellular CO2 con-centration had no significant difference between each treatment.In terms of yield and active ingredi-ents,total yield and total average yield of No.1 film were the highest;total saponin content in the 5th film ginseng leaves wass the highest,while total saponin content in No.1 film ginseng roots was the highest.In summary,No.1 yellow film recommended for production can help improve the yield and increase the accumulation of active ingredients.The reason may be that high transparency of the yel-low film increases photosynthesis and yield of ginseng,and the increase in saponin content may be due to the accumulation of more saponins in ginseng in order to adapt to strong light stress.However,it remains to be studied whether the use of yellow film can lead to premature aging of ginseng plants.
万方数据
维普
