草业学报Issue(3)：122-133,12.DOI:10.11686/cyxb20150313
土壤熏蒸－微生物有机肥联用对连作马铃薯生长和土壤生化性质的影响
Soil fumigation and bio-organic fertilizer application promotes potato growth and affects soil bio-chemical properties in a continuous cropping system
摘要
Abstract
The yellow river irrigation areas in the central Gansu Province are the main potato growing and pro-cessing regions in China.However,continuous cropping has resulted in production losses and impaired the de- velopment of the potato industry in the region.A field experiment was conducted to evaluate the effectiveness of a combination of soil fumigation and bio-organic fertilizer application to increase yields through increased crop growth and suppression of soil-borne pathogens.Five treatment combinations including control (CK),soil fumigation using aqueous ammonia (SFA),soil fumigation plus lime and ammonium bicarbonate (SFB),a combination of SFA and bio-organic fertilizer application (SFA+BOF),and a combination of SFB and bio-or-ganic fertilizer application (SFB+BOF),were utilised.Compared with CK,SFA+BOF and SFB+BOF treat-ments significantly increased tuber yield by 13.62% and 20.36%,decreased the incidence of diseased plants by 54.9% and 72.8%,and decreased the ratio of diseased tuber by 66.15% and 64.76%,respectively.Addition-ally,SFA+BOF and SFB+BOF treatments significantly increased leaf chlorophyll content and improved the morphological characteristics of potato roots.Compared with CK,SFA+BOF and SFB+BOF treatments in-creased soil bacteria and actinomycetes and decreased fungi populations.In particular,these treatments signifi-cantly decreased Fusarium sp.which reduced the incidence of diseased plants during crop growth and increased tuber yields.Neither treatment influenced soil enzyme activity but both treatments significantly increased soil phosphatase activity.Our results indicated that a combination of soil fumigation and bio-organic fertilizer appli-cation may potentially be used to control soil borne fungal diseases in potatoes.关键词
马铃薯/连作/发病率/可培养微生物/镰刀菌/土壤酶Key words
potato (Solanum tuberosum )/continuous cropping/incidence of diseased plant/cultural microor-ganisms/Fusarium sp./soil enzyme引用本文复制引用
刘星,张书乐,刘国锋,邱慧珍,王蒂,张俊莲,沈其荣..土壤熏蒸－微生物有机肥联用对连作马铃薯生长和土壤生化性质的影响[J].草业学报,2015,(3):122-133,12.基金项目
农业部公益性行业（农业）科技专项（201103004），国家科技支撑计划（2012BAD06B03），国家马铃薯产业技术体系（CARS-10-P18）和甘肃省科技重大专项（1102NKDA025）资助。 （）
