Effects of Several Physiological Activators on Peach Leaf Photosynthetic Characteristics,Fruit Quality and Soil Enzyme Activities
Luo Jingjing
Zhang Yafei
Peng Futian
Jiang Xiaomei
Zhang Jianghong
Dang Zhuqing
Xiao Yuansong
Abstract：In field conditions,the 3 -year -old nectarine variety Luxing and 5 -year -old flat peach variety Ruipan 17 were used as materials to study the influences of fulvic acid potassium,sorbitol,sodium ni-trophenolate,sodium hydrogen sulfate,and their combinations applied in the fruit rapid expansion period on peach leaf photosynthetic characteristics,fruit quality and soil enzyme activities.The results showed that com-pared with the control,all the treatments could significantly improve the nutrient and chlorophyll contents of leaves.The effect of T7 (750 g of fulvic acid potassium,750 g of sorbito,0.5 g of sodium nitrophenolate and 0.5 g per plant of sodium hydrogen sulfate on nectarine variety Luxing was the most obvious.And the contents of total nitrogen,total phosphorus,total potassium,chlorophyll a,chlorophyll b and carotenoids in leaves in-creased by 29.22%,41.46%,23.84%,28.66%,25.00% and 13.51% .The effect of F7 (750 g of ful-vic acid potassium,750 g of sorbito and 0.5 g per plant of sodium nitrophenolate)on flat peach variety Rui-pan 17 was the most obvious.For the 2 varieties,the physiological activators and their combinations all im-proved the net photosynthetic rate of leaves,average weight and soluble solid content of fruits in different de-grees.The soluble solid contents in nectarine variety Luxing under the treatments of T2,T3,T4,T5,T6 and T7 increased by 13.22%,16.10%,21.23%,11.86%,2.42% and 23.46% respectively compared with T1.The average weight of flat peach variety Ruipan 17 under the treatments of F2,F3,F4,F5,F6 and F7 im-proved by 18.14%,5.33%,20.05%,5.86%,20.56% and 27.85% respectively compared with the con-trol (F1).The correlation analysis showed that the fruit soluble solid content positively correlated with the leaf net photosynthetic rate in the same variety.Compared with the control,every treatment increased the activities of soil invertase,acid phosphatase,catalase and proteinase in different degrees.The treatments with the addi-tion of fulvic acid potassium obviously decreased the soil urease activity.
Keywords：PeachSoil enzyme activityFruit qualityPhysiological activators
Publication Date：2016-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：7( 67-73 )