摘要
我国设施土壤养分不均,环境不断恶化,如何解决设施土壤连作障碍问题、提高设施黄瓜的品质成为亟待解决的问题。该试验以设施黄瓜为试材,以2种不同无土栽培基质不添加和添加生物炭为处理,研究了细菌群落结构的变化规律,探讨无土栽培基质结合生物炭影响根际菌群结构变化及其互作机制。结果表明:进口基质并添加生物炭可降低根际酸杆菌门比例,提高变形菌门、放线菌门、α-变形菌纲、放线菌纲、放线菌目、根瘤菌目、黄色单胞菌目、黄色单胞菌科、链霉菌科、类诺卡氏菌科比例,改变细菌群落结构,进而通过增加根际土壤速效养分供给状态、促进根际纤维素生成葡萄糖、刺激根系对铁吸收并促进根系生长等方面作用,最终促进黄瓜植株的生长和产量的提高。
The environment is deteriorated, the soil nutrient is uneven in China. So how to solve the soil continuous cropping obstacle and improve the quality of facilities cucumber has become an urgent problem. Facilities cucumber were used as materials in the experiment, changes of bacterial community structure in two different soilless culture medium by adding or not adding biochar were studied, explored group structure and interaction mechanism of rhizosphere bacteria on the soilless culture with biochar. The results showed that biochar was added to imported soilless culture reduced the proportion of Acidobaeteria, improved the ratio of Proteobaeteria, Actinobacteria, Alphaproteobacteria Actinobacteria, Actinomycetales, Rhizobiales, Xanthomonadale, Xanthomonadaceae, Streptomycetaeeae and Nocardioidaceae in the rhizosphere soil, changed bacterial community structure, and increased the provision of nutrient in rhizosphere soil, promoted cellulose to glucose, stimulated iron absorption in the root and promoted root growth. Finally, the growth and yield of cucumber were increased.
作者
赵淑文
李明
胡云
ZHAO Shuwen;LIMing;HU Yun(Grassland and Environment College, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018;Vocational Technical College, Inner Mongolia Agricultural University, Baotou, Inner Mongolia 014109)
出处
《北方园艺》
CAS
北大核心
2018年第9期127-132,共6页
Northern Horticulture
基金
国家自然科学基金资助项目(31660602)
关键词
设施黄瓜
无土栽培
生物炭
根际细菌群落
facilities cucumber
soilless culture
biochar
rhizosphere bacterial communities
