模拟矿区复垦接种丛枝菌根缓解伤根对玉米生长影响

针对煤炭开采过程中地表塌陷造成植物根系损伤问题,通过人为伤根模拟煤炭开采造成植物根系受损的盆栽试验,以玉米为宿主植物,矿区退化土壤为供试基质,研究接种丛枝菌根真菌对根系受损玉米生长的缓解作用。结果表明,玉米根系受损条件下,接种丛枝菌根真菌缓解了伤根对玉米生长造成的不利影响,促进了玉米的生长,接菌组玉米干质量平均每株要比对照组高出9.74 g。强化接种菌根真菌提高了玉米对土壤中矿质元素的吸收,增加了受损玉米根际土壤中球囊霉素和有机质含量,接菌组玉米根际土壤中总球囊霉素和有机质含量分别比对照组高出48.1%和24.5%。接种菌根改善了玉米根际微环境,有利于矿区退化土壤改良和培肥。通过研究菌根真菌对...

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Published in农业工程学报 Vol. 29; no. 23; pp. 211 - 216
Main Author 李少朋 毕银丽 余海洋 孔维平 冯颜博 秦亚非
Format Journal Article
LanguageChinese
Published 中国矿业大学 北京 地球科学与测绘工程学院,北京,100083 2013
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Summary:针对煤炭开采过程中地表塌陷造成植物根系损伤问题,通过人为伤根模拟煤炭开采造成植物根系受损的盆栽试验,以玉米为宿主植物,矿区退化土壤为供试基质,研究接种丛枝菌根真菌对根系受损玉米生长的缓解作用。结果表明,玉米根系受损条件下,接种丛枝菌根真菌缓解了伤根对玉米生长造成的不利影响,促进了玉米的生长,接菌组玉米干质量平均每株要比对照组高出9.74 g。强化接种菌根真菌提高了玉米对土壤中矿质元素的吸收,增加了受损玉米根际土壤中球囊霉素和有机质含量,接菌组玉米根际土壤中总球囊霉素和有机质含量分别比对照组高出48.1%和24.5%。接种菌根改善了玉米根际微环境,有利于矿区退化土壤改良和培肥。通过研究菌根真菌对根系受损植物生长效应,为采煤塌陷区土地复垦与生态重建提供技术支撑。
Bibliography:11-2047/S
Reliefing affection of damage roots on growth of maize by application of arbuscular mycorrhizal fungi Abstract: With the first coal output and larger subsidence area in China, the Shendong mining area is the largest coal field in China and one of the seven major coalfields in the world now. Underground mining would cause ground subsidence damage and large amounts of cracks, which would result a loss of surface moisture and nutrient and intensifying drought. There are a few reports about damage to plant roots caused by coal mining at home and abroad. The main reasons are that plant roots in soil would form a "black box" which is difficult to observe. In addition, the irregular distribution of plant roots in soil and the different forces generated in process of surface subsidence are difficult to study comprehensively. The technologies to repair damaged plant roots have not been completely perfected yet. Although the physical methods and chemical methods would alleviate the adverse effects of coal mini
ISSN:1002-6819
DOI:10.3969/j.issn.1002-6819.2013.23.029