Abstract

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Title:: Effect of Microbial Agents to Reduce Nitrogen Fertilizer on Gold Silk Jujube Orchards in Fluvo-aquic Soil

Author(s):: ZHANG Wanglin1; JIANG Kuinian2; ZHANG Zhiying3; ZHANG Lianshui4; LI Yajing5; LIU Quanfeng5; (1.Cangzhou Institute of Forestry Science,Cangzhou,Hebei 061001;2.Cangxian Gardening and Greening Bureau,Cangzhou,Hebei 061000;3.Huanghua City Agriculture Bureau,Cangzhou,Hebei 061100;4.Cangzhou Wangfa Biotechnology Research Institute Co.Ltd.,Cangzhou,Hebei 061001;5.Cangzhou Academy of Agriculture and Forestry Sciences,Cangzhou,Hebei 061001)

Keywords:: microbial agents; fluvo-aquic soil; reduction of nitrogen fertilizer application

Abstract:: Microbial agents was used as test materials,by the field plot test method,the effects of microbial agents on the various indexes were studied in the soil-golden jujube-fertilizer system in order to provide reference for scientific nitrogen reduction of golden jujube in this area.The results showed that under the premise of applying microbial agents,when the nitrogen fertilizer application amount was reduced to 80% (480 kg·hm-2) of the conventional nitrogen application amount,the soil nitrogen supply capacity was the strongest,and the urease activity was 422 mg·kg-1.The nitrogen content was 90 mg·kg-1;the yield was 9 153.00 kg·hm-2,and the increase rate was 17.71%;the partial production capacity of nitrogen fertilizer was higher,which was 6.11 kg·kg-1 higher than that of the control;the quality of the jujube was better.The single fruit weight was 5.655 g,the total soluble sugar content was 24.43%,the difference of vitamin C and titratable acid content was not significant,and the incidence of jujube pulp decay disease and fruit cracking was also low,which was decreased by 16.82% and 6.89% compared with the control,respectively.