土壤酶活抑制剂和外源植物调节剂对薇甘菊的抑制效应  

Inhibitory Effects of Soil Enzyme Activity Inhibitors and Exogenous Plant Regulators on Mikania micrantha

作　　者：吴家龙 李铤 梁春梅 张俊涛 WU Jialong;LI Ting;LIANG Chunmei;ZHANG Juntao(Guangzhou Institute of Forestry and Landscape Architecture/Guangzhou Collaborative Innovation Center on Science-tech of Ecol-ogy and Landscape,Guangzhou,Guangdong 510405,China)

机构地区：[1]广州市林业和园林科学研究院/广州市生态园林科技协同创新中心,广东广州510405

出　　处：《热带作物学报》2024年第12期2670-2677,共8页Chinese Journal of Tropical Crops

基　　金：广州市科技计划项目“海珠湿地薇甘菊综合防控技术研究与示范”(No.202005000002)。

摘　　要：薇甘菊(Mikania micrantha)是中国首批外来入侵物种,对亚热带地区生态安全的危害极大,土壤酶活抑制剂和植物生长调节剂在植物生长调控中发挥至关重要的作用。本研究通过7个月的盆栽连续培养试验,研究不同浓度土壤酶活抑制剂和外源植物调节剂对旺长期、现蕾期、开花期、盛花期和结籽期薇甘菊生长的影响,浓度设置为:1、15 g/L脲酶抑制剂[N-(N-butyl)thiophosphoric triamide,NBPT],1、15 g/L硝化抑制剂(nitrification inhibitor,DMPP),25、50 mg/L脱落酸(abscisic acid,ABA),1、10 g/L矮壮素(chlormequat,CCC)。结果表明:高、低浓度的土壤酶活抑制剂和植物生长调节剂对薇甘菊生长及土壤碱解氮、速效磷含量的影响有一定差异,其中,矮壮素和DMPP对薇甘菊的抑制作用明显,而15 g/L NBPT对薇甘菊生长具有促进作用。总之,10 g/L矮壮素对旺长期薇甘菊生长具有抑制作用,而15 g/L DMPP则对盛花期薇甘菊生长具有抑制作用,二者联合施用可为薇甘菊全生命周期的综合防治提供理论依据。Mikania micrantha is one of the first invasive species in China,which poses a big threat to the ecological security of subtropical regions.Soil enzyme activity inhibitors and plant growth regulators play central roles in plant growth regulation.In this paper,the effects of different concentrations of soil enzyme activity inhibitors[1 g/L and 15 g/L NBPT,N-(N-butyl)thiophosphate triamide,1 g/L and 15 g/L nitrification inhibitor DMPP]and exogenous plant regulators(25 mg/L and 50 mg/L ABA,abscisic acid,1 g/L and 10 g/L CCC,chlormequat)on the growth of M.micran-tha during its vigorous growth period,budding period,flowering period,peak flowering period,and seed setting period were studied through a 7-month continuous pot culture experiment.The results showed that high and low concentrations of soil enzyme activity inhibitors and plant growth regulators had different effects on the growth status of chamomile and the content of alkaline hydrolyzed nitrogen and available phosphorus in the soil.Among them,chloramphenicol and DMPP had a significant inhibitory effect on chamomile,while 15 g/L NBPT had a promoting effect on chamomile growth.In summary,10 g/L chloramphenicol had an inhibitory effect on the vigorous growth of chamomile,while 15 g/L DMPP had an inhibitory effect on the vigorous flowering period of chamomile.The combined application of the two could provide a theoretical basis for the comprehensive prevention and control of chamomile throughout its lifecycle.

关 键 词：薇甘菊 土壤 酶活抑制剂 植物调节剂 抑制效应 

分 类 号：S765[农业科学—森林保护学] Q946.885.9[农业科学—林学]