Biochar improves soil properties and corn productivity under drought conditions in South Korea

作     者：Jae-Hyuk Park Jin-Ju Yun Seong-Heon Kim Jong-Hwan Park Bharat Sharma Acharya Ju-Sik Cho Se-Won Kang 

作者机构：Department of Agricultural ChemistrySunchon National UniversitySuncheon 57922Republic of Korea Division of Soil and FertilizerNational Institute of Agricultural SciencesRDAWanju 55365Republic of Korea Department of Life Resources IndustryDong-A UniversityBusan 49315Republic of Korea Rodale InstituteSoutheast Organic CenterChattahoochee HillsGA 30268USA Department of Agricultural Life SciencesSunchon National UniversitySuncheon 57922Republic of Korea 

出 版 物：《Biochar》 (生物炭（英文）)

年 卷 期：2023年第5卷第1期

页      面：1148-1158页

核心收录：

学科分类：09[农学] 0903[农学-农业资源与环境] 090301[农学-土壤学] 

基　　金：National Research Foundation of Korea(NRF)grant funded by the Korea government(MSIT)(No.2022R1F1A1064576) The authors also acknowledge the support of"Cooperative Research Program for Agriculture Science and Technology Development(Project No.PJ015568)"Rural Development Administration,Republic of Korea “Regional Innovation Strategy(RIS)”through the National Research Foundation of Korea(NRF)funded by the Ministry of Education(MOE)(2021RIS-002) 

主　　题：Biochar Drought Precipitation Soil CO_(2) 

摘      要：Biochar has been shown to improve soil properties and plant productivity in soils with inherently low ***,little has been reported for upland corns under dry and wet precipitation *** study investigates the effect of biochar addition on a range of soil physicochemical,biological,and hydrological properties,and corn growth and productivity under agrometeorological drought and wet ***,experiments were laid out in a randomized complete block design with three replications at two sites during 2017 and 2018 in South *** included(i)CN:control(ii)IF:inorganic fertilizer(N-P-K)at 145-30-60 kg ha^(−1);(iii)BS:barley straw at 5 t ha^(−1);(iv)CWBC:corn waste biochar at 5 t ha^(−1);(v)CWBC+IF:corn waste biochar+inorganic fertilizer;(vi)CWBC+BS:corn waste biochar+barley *** year 2017 was relatively dry,whereas the year 2018 was *** drought conditions in the year 2017,biochar facilitated soil water ***,higher precipitation in 2018 increased the quantity and distribution of soil water and nutrients in the top 15 *** reduced soil bulk density,and increased porosity,cation exchange capacity and total organic carbon in both years but increased total bacterial counts during the dry year *** population was generally higher under wet ***,more soil CO_(2) was emitted in the wet year than in the dry *** further indicated that biochar can enhance corn biomass and grain yield regardless of precipitation *** grain index was,however,affected by rainfall and was significantly different across treatments in the year 2018 *** biomass,grain yield,and grain index were highest in CWBC+IF treatment and lowest under CN ***,biochar addition appeared to improve soil quality and soil conditioning effects in the drought and wet years,ameliorating soil and plant ***,biochar can improve water and nutrients storage,availability,and uptake,and