摘要
[目的]研究烟蒜轮作对高海拔地区烤烟生产发育的影响,以及与之关联的根际土壤提取物成分变化,进而探索缓解高海拔烤烟连作障碍的烟蒜轮作模式。[方法]在海拔约1 500 m连续单季连作烤烟8年以上的烟区引进温江大蒜、金乡大蒜、中蒜1号,调查烟蒜轮作对云烟87生长发育的影响,通过GC-MS对根际土的乙醇提取物进行组分分析,初步确定可能与烟蒜轮作效应关联的根际土化学成分。[结果]大蒜轮作显著提高烤烟农艺性状,大蒜品种间存在轮作效应差异,小瓣蒜类型的温江大蒜因密植轮作效应最好。烟苗根际土粗提物组分以酯类为主,其次为有机酸、酚苯类、醇类等化感物质。3种大蒜轮作处理下,烟苗根际土壤中的酯类物质种类和丰度显著降低,总有机组分数量增加,推测可能与烟蒜轮作效应有关。[结论]温江大蒜在高海拔地区轮作效应最好。
[Objective]To evaluate the effect of tobacco-garlic rotation on tobacco farming and the dynamic rhizosphere soil extract in the rotation,which will help us to explore the underlying mechanism of rotation effect.[Method]Three garlic varieties‘Wenjiang’‘Jingxiang’and‘Zhongsuan No.1’were introduced to tobacco field with an elevation of about 1 500 meters that have been monocropping for over 8 years.The effect of garlic rotation on tobacco growth were evaluated and the dynamic ethanol extract from tobacco rhizosphere soil were detected by GC-MS.[Result]Garlic rotation significantly increased the yield and quality of tobacco.There was obvious difference in rotation effect between different garlic varieties and‘Wenjiang’garlic was the best.The garlic rotation decreased the amounts of esters but increased the number of organic components in three garlic cultivars,which might account for the rotation effect.[Conclusion]The rotation effect of‘Wenjiang’garlic in high altitude area is the best.
作者
张锐静
张书畅
苏嘉骐
曾庆宾
杨军伟
陈强
李瑜
王海平
王春涛
李焕秀
赖云松
ZHANG Rui-jing;ZHANG Shu-chang;SU Jia-qi(College of Horticulture, Sichuan Agricultural University,Chengdu,Sichuan 611130)
出处
《安徽农业科学》
CAS
2019年第1期141-145,201,共6页
Journal of Anhui Agricultural Sciences
基金
中国烟草总公司四川分公司重点科技项目(SCYC201504)
关键词
连作障碍
烟蒜轮作
根际土
GC-MS
烟草
高海拔烟区
Continuous cropping obstacle
Tobacco and garlic rotation
Rhizosphere soil
GC-MS
Tobacco
High altitude tobacco growing area
