Effects of Interaction between Organic Fertilizer and Fenlong on Photosynthetic Physiological Characteristics and Tissue and Cell Structure of Sugarcane
By exploring the response of the photosynthetic physiological characteristics of sugarcane under the interaction mode of organic fertilizer and fenlong tillage,the'Guitang 42'was used as the tested sugarcane variety,through a two-year field experiment,the wormcast+compound fertilizer(F1),pig manure+compound fertilizer(F2),and compound fertilizer(CK)were carried out to investigate on the photosynthetic physiological characteristics and tissue cell structure of sugarcane.The results showed that,the stomatal conductance,intercellular CO2 concentration and transpiration rate of leaves treated with organic fertilizer were higher than those with CK.Especially in the elongation period of perennial sugarcane,the activities of malic dehydrogenase,phosphoenolpyruvate carboxylase and ribose 1,5-diphosphate carboxylase in leaves were significantly higher than those of CK.The leaf thickness,mesophyll cell size and vascular bundle area of the organic fertilizer treatment were greater than those of CK.The plant emergence rate and tillering rate of perennial sugarcane of F2 treatment were significantly higher than those of CK.The yield of organic fertilizer treatment was significantly higher than that of CK.To sum up,the interaction model of organic fertilizer and fenlong tillage is beneficial to increase the photosynthetic enzyme activities,stomatal conductance and other related indicators.Additionally,it can improve the sugarcane's mesophyll cell and vascular tissue structure,which would ultimately improve the yield by facilitating the accumulation and functioning of dry matter.
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