施加有机肥下木质素对平邑甜茶根系活力及根际土壤微生态的影响  

Effects of Lignin on Root Activity of Malus hupehensis Rehd. and Microecology in Rhizosphere Soil under Organic Fertilizer

作　　者：吕婷雯 沈汝波 杨洪强[3] 范伟国[3] 张瑞雪 王利[1] 徐颖 曹辉 宁留芳 周春然 LV Ting-wen;SHEN Ru-bo;YANG Hong-qiang;FAN Wei-guo;ZHANG Rui-xue;WANG Li;XU Ying;CAO Hui;NING Liu-fang;ZHOU Chun-ran(College of Forestry/Shandong Agricultural University,Tai’an 271018,China;Fruit Station/Linqu County of Shandong Province,Lin’qu 262600,China;College of Horticulture Science and Engineering/Shandong Agricultural University,Tai’an 271018,China)

机构地区：[1]山东农业大学林学院,山东泰安271018 [2]山东临朐县果树站,山东临朐262600 [3]山东农业大学园艺科学与工程学院,山东泰安271018

出　　处：《山东农业大学学报（自然科学版）》2018年第4期561-565,共5页Journal of Shandong Agricultural University：Natural Science Edition

基　　金：国家十二五科技支撑计划(2014BAD16B02)

摘　　要：本试验以1年生平邑甜茶为试验材料,通过盆栽试验及室内分析,探究在施用有机肥条件下,木质素对平邑甜茶根系活力、根际土壤酶活性及土壤微生物多样性的影响。结果表明:(1)不论在10%或40%有机肥条件下,两种浓度木质素均不同程度的提高平邑甜茶的根系活力,其中2.5 g·kg^(-1)处理提高最多。(2)10%有机肥下,木质素抑制了土壤脲酶活性,提高了土壤蔗糖酶活性,2.5 g·kg^(-1)处理表现最为显著,1.5 g·kg^(-1)处理显著提高了土壤纤维素酶活性;40%有机肥下,两种浓度木质素均提高了土壤纤维素酶活性,2.5 g·kg^(-1)处理显著提高了蔗糖酶活性。(3)木质素某种程度上增加了根际土壤微生物数量,有利于土壤微生物活性的提高。10%有机肥下,1.5 g·kg^(-1)处理显著提高土壤微生物细菌、真菌及放线菌数量;40%有机肥下,2.5 g·kg^(-1)处理提高微生物数量最为显著。木质素改善了土壤微生物多样性,改变了土壤酶活性,2.5 g·kg^(-1)处理显著提高了平邑甜茶根系活力。研究结果为根系土壤环境的调控提供了理论依据。In this experiment,the effects of lignin on root activity,rhizosphere soil enzyme activity and soil microbial diversity of Malus hupehensis Rehd.were investigated by pot experiment and laboratory analysis using one-year M.hupehensis.as experimental material under organic fertilizer.The results showed:(1)Under the condition of 10%or 40%organic fertilizer,both lignin concentrations could increase the root activity of M.hupehensis.to varying degrees,of which 2.5 g·kg-1 treatment increased the most.(2)Under 10%organic fertilizer,lignin inhibited soil urease activity,increased soil sucrose enzyme activity,and 2.5 g·kg-1 treatment showed the most significant performance.1.5 g·kg-1 treatment significantly improved soil cellulase activity.Under the condition of 40%organic fertilizer,both concentrations of lignin increased soil cellulose activities.2.5 g·kg-1 treatment significantly increased the sucrose enzyme activity.(3)To some extent,lignin increased the number of microbes in rhizosphere soil,which was beneficial to the improvement of soil microbial activity.Under 10%organic fertilizer,1.5 g·kg-1 treatment significantly increased the number of soil microbial bacteria,fungi and actinomycetes;under the condition of 40%organic fertilizer,2.5 g·kg-1 treatment obviously enhanced soil microbes amount.Lignin improved soil microbial diversity and soil enzyme activity.2.5 g·kg-1 treatment significantly improved the root activity of M.hupehensis.The results provided a theoretical basis for the regulation of root soil environment.

关 键 词：平邑甜茶 木质素 土壤酶活性 微生物数量 根系活力 

分 类 号：S571.1[农业科学—茶叶生产加工]