摘要
采用盆栽试验分析了化感物质豆蔻酸对茄子根际土壤微生物生理功能类群和土壤酶活性的影响。结果表明,豆蔻酸处理显著增加了茄子根际微生物生理类群数量,细菌菌群数随处理浓度增加而逐渐增加;硝化细菌与纤维素分解菌数量变化一致,1.00 mmol/kg豆蔻酸处理的数量最多;0.05~1.00 mmol/kg豆蔻酸处理的固氮菌数量显著高于对照。与对照相比,豆蔻酸处理后土壤多酚氧化酶和过氧化物酶活性显著增加,脲酶在中高浓度豆蔻酸处理中显著增加,蛋白酶活性均显著高于对照,但各处理浓度之间差异不大。豆蔻酸处理明显增加了茄子株高和茎粗。
The amount of microbial physiological groups and soil enzymes activities in the rhizosphere soil of eggplant after applying allelochemical myristic acid were studied by a pot experiment. Results showed that amount of microbial physiological groups in the rhizosphere of eggplant treated with myristic acid significantly increased. The amounts of microbial physiological groups increased gradually with the increase of myristic acid concentration. The number of nitrifying bacteria and cellulose decomposing bacteria had a similar change tendency with the highest amount at 1. 00 mmol / kg myristic acid.The number of nitrogen-fixing bacteria was significantly higher than that of control at the range of 0.05-1.00 mmol / kg myristic acid. Compared with control,polyphenol oxidase and peroxidase activities were significantly increased. And urease activity significantly increased at the higher concentration of myristic acid. Protease activity was significantly higher than that of control at all concentration of myristic acid. But there was no differences among the concentration of myristic acid.Meanwhile,plant height and shoot diameter increased in the myristic acid treatment.
出处
《江苏农业学报》
CSCD
北大核心
2017年第1期181-184,共4页
Jiangsu Journal of Agricultural Sciences
基金
国家自然科学基金项目(31171950
31460514)
江西省青年科学基金项目(20142BAB214015)
江西省农业科学院创新基金博士启动项目(2013CBS003)
关键词
茄子
化感物质
豆蔻酸
土壤微生物群
土壤酶
eggplants
allelochemical
myristic acid
soil microbial population
soil enzyme
