有色膜覆盖下韭菜光合作用特性的研究

Studies on Photosynthetic Characters of Chinese Chive Under Colour Plastic Film

Under red,yellow,green,blue,violet and colourless plastic film, photosynthetic characters of Chinese Chive were studied.The results were as follows: 1.Chinese Chive grew excessive under yellow,green,blue and vio- let plastic film and fine under colourless and red plastic film. 2.Chinese Chive grown under colourless,red,yellow plastic film had much higher chlorophyll content,but that grown under blue and vio- let plastic film had lower chlorophyll content,and that grown under green plastic film had middling chloropyll content. 3.Chl.a/Chl.b ratio in the leaf of Chinese Chive grown under each col- our plastic film was arranged,from high to low,as follows:colourless, yellow,red,green,blue,violet. 4.Under red plastic film,the net photosynthetic rate was the ma- ximum,and it increased by 24.6% in comparison with under colourless plastic film. 5.Under red plastic film,the plant fresh weight was the maxim- um,and it increased by 15.0% in comparison with under colourless plastic film,but the plant dry weight decreased by 9.8% and the plant dry weight ratio decreased by 2.2%.