Effects of CO_2 Fertilizer on Photosynthesis and Yield Formation of Green Leaf Vegetables in Protected Fields
Zhang Xinfa1 et al. (1 Agricultural comprehensive service station,Shangtang town,Nancheng county,Jiangxi Province,Nancheng 335100,China)
By means of applying liquid CO2 fertilizer,effects of CO2 fertilizer on photosynthesis and yield formation of green leaf vegetables were conducted in protected field,and the key techniques of applying liquid CO2 fertilizer were also summarized.The results indicated that:(1) Application of liquid CO2 fertilizer,the survival environment of green leaf vegetables in protected fields was improved,leaf photosynthesis was strengthened very significantly and physiological metabolic functions of green leaf vegetables were promoted.(2) Application of liquid CO2 fertilizer,the growth and development or yield traits of green leaf vegetables were promoted very significantly and yield was increased very notably.(3) The responses of different green leaf vegetables to CO2 fertilizer were different;for example,the response of celery was more obviously sensitive than that of lettuce.(4) The responses of different characteristics on growth and development and yield of green leaf vegetable to CO2 fertilizer were also different,generally,the responses of ground traits(such as stem and leaf weight per plant) were more sensitive than underground traits(such as root weight per plant),the characteristics of cell elongation(such as plant height,leaf length) were more sensitive than that of cell hyperplasia(such as leaf width).
【CateGory Index】： S626