Effects of organic amendments on soil properties and growth characteristics of Melon(Cucumis melo L.)under saline irrigation  

作　　者：Mohammed M.A.Elbashier Yalu Shao Liangkai Wang Deli Chen Hua Zhong 

机构地区：[1]College of Agricultural Sciences and Engineering,Hohai University,Nanjing 210098,China [2]State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China [3]School of Agriculture and Food,The University of Melbourne,Victoria 3010,Australia

出　　处：《International Journal of Agricultural and Biological Engineering》2021年第5期123-129,共7页国际农业与生物工程学报（英文）

基　　金：by the National Nature Science Foundation of China(51779182);the Fundamental Research Funds for the Central Universities(2017B20414);the National Key Research and Development Program(2020YFD0900705);the Science and Technology Project for Nanjing Water Conservancy Bureau(2019-208-6).

摘　　要：Establishing strategies of organic amendments application to mitigate the adverse effects of saline irrigation are essential for the sustainable agriculture.A two-year pot experiment was conducted using combinations of organic amendments including effective microorganisms(EM),biochar(BC)and digestate(Di)to investigate their effects on soil and melon(Cucumis melo L.)compared with the recommended NPK fertilizer and Control(CK)under two levels of irrigation water salinity(SL0:0.25 dS/m,SL1:2.0 dS/m).Results showed combined applications of organic amendments could significantly(p<0.05)increase soil pH and organic matter(OM)compared to NPK and CK.Application of organic amendments containing BC evidently increased the sodium adsorptive capacity(SAC)under saline water solution.The combined application of EM,BC and Di(EM+BC+Di)could significantly(p<0.05)improve soil available water retention under SL0 and SL1 compared with other treatments.Results also showed organic amendments application can significantly(p<0.05)enhance the photosynthetic rate(Pr)and reduce sodium ion(Na+)content in melon leaves.EM+BC+Di could significantly(p<0.05)increase water use efficiency(WUE)and fruit yield of melon under SL0 and SL1 in comparison to other treatments.It proved that EM+BC+Di had a positive effect on soil improvement,melon growth,WUE and fruit yield.Moreover,EM+BC+Di could be used as an alternative strategy for mineral NPK fertilization of melon at reasonable dosages and frequencies under saline irrigation.

关 键 词：organic amendments saline irrigation soil improvement MELON water use efficiency 

分 类 号：S15[农业科学—土壤学]