果树学报2013，Vol.30Issue(2)：274-280,7.
土壤物理因素和栽培方式对淡紫拟青霉E7在香蕉根际定殖和促生作用的影响
Effect of soil physical factors and cultivation methods on colonization and growth promotion-effect of Paecilomyces lilacinus E7 in banana rhizosphere
摘要
Abstract
[Objective]The objective of the study was to elucidate the effects of environmental conditions on soil ecology characteristics of Paecilomyces lilacinus. [Method]Paecilomyces lilacinus E7 were used as materials to study the effects of soil physical factors and cultivation methods on colonization of E7 in banana rhizosphere and its growth-promotion effect on banana seedling. [Result]The results showed that the optimum soil texture for E7 colonization in banana rhizosphere and the corresponding expression of growth-promotion effect was loam, followed by sandy soil and then clay in pot experiment. The optimum temperature and moisture order for E7 colonization was 30 ℃, 37 ℃ , 23 ℃ and 16 ℃; and that for growth-promotion effect expression was 37 ℃, 30 ℃, 23 ℃ and 16 ℃. The optimum soil relative moisture order for colonization and growth-promotion effect expression of E7 was 20% , 25% , 15% and 30%. Compared with other treatments, the combination of E7 with intercropping banana and sweet potato increased E7 colonization in banana rhizosphere 0 to 120 days after transplanting, at the same time , the growth of banana, the number of E7, culturable bacteria and fungi, Actinomyces in banana rhizosphere and E7 in soils at different depth increased significantly 120 days after transplanting. [Conclusion]In conclusion , E7 in banana rhizosphere and its growth-promotion effect on banana seedling were effectively increased under the optimum conditions, i.e. loam, 30 ℃ or 37 ℃, 20% moisture and intercropping banana and sweet potato.关键词
香蕉/土壤物理因素/栽培方式/淡紫拟青霉E7/定殖/促生作用Key words
Banana/ Soil physical factor/ Cultivation methods/ Paecilomyces lilacinus E7/ Colonization/ Growth-promotion effect分类
农业科技引用本文复制引用
汪军,潘江禹,毛超,戴青冬,刘一贤,张建华,郭立佳,黄俊生..土壤物理因素和栽培方式对淡紫拟青霉E7在香蕉根际定殖和促生作用的影响[J].果树学报,2013,30(2):274-280,7.基金项目
国家科技支撑计划(2007BAD48B02) （2007BAD48B02）
公益性行业(农业)科技专项(200903049) （农业）
农业科技成果转化资金(2012GB23260563) （2012GB23260563）
中央级公益性科研院所基本科研业务费专项(2012hzs1J029) （2012hzs1J029）
2012海南省研究生创新科研课题(Hyb2012-5) （Hyb2012-5）
海南大学"211工程"建设项目 （）
海南大学环境与植物保护学院研究生创新平台 （）
