期刊论文

Maize root exudates alleviated allelopathic inhibttion of phenolic acids in soil of continuous cropping peanut

中文

中国油料作物学报

1007-9084

2019

41

6

921-931

10.19802/j.issn.1007-9084.2019114

国家重点研发计划(2018YFD1000900) 山东省自然科学基金(ZR2014YL025) 国家科技支撑计划(2014BAD11B04) 现代农业产业技术体系建设专项(CARS-13) 山东省农业科学院农业科技创新工程(CXGC2018E03、CXGC2016A05) 山东省作物遗传改良与生态生理重点实验室课题(SDKL2018008-2)。

本校为第一机构

为探讨玉米//花生间作系统中玉米根系分泌物对连作花生土壤中酚酸类物质化感作用的影响机制,采用二氯甲烷提取了玉米抽雄期根系分泌物,添加到含有不同浓度的连作花生根系分泌物中主要的三种酚酸类物质(肉桂酸、邻苯二甲酸和对羟基苯甲酸)混合物的土壤中,研究了土壤微生态环境变化情况.结果 表明,酚酸类物质对土壤微生物量、微生物活性、酶活性及养分含量均存在化感抑制作用,且浓度越高,抑制作用越强(P＜0.05).整个培养时期,添加玉米根系分泌物均增加了酚酸类物质处理土壤呼吸强度、酶活性、微生物量及养分含量,以低浓度处理增幅较大,分别平均增加7.58％、6.73％、7.72％和4.90％;降低了酚酸类物...

To explore the mechanism of maize//peanut intercropping alleviate peanut continuous cropping obstacles, effect of maize root exudates was explored in maize//peanut intercropping system on allelopathy of phenolic acids in soil of continuously cropped peanut. Maize root exudate was extracted at tasseling stage by CH2Cl2 (dichloromethane). Then it was added into soil containing different concentrations of 3 main phenolic acid compounds mixture (cinnamic acid, phthalic acid and p-hydroxybenzoic acid). Soil micro-environment was investigated. Results demonstrated allelopathic inhibition by phenolic...