湘中油茶林杂草化学防除技术研究

Study on Chemical Control Technology of Weeds in Camellia oleifera Forest in Central Hunan Province

油茶作为世界上四大食用油料之一,在我国农业经济中占有重要地位,而油茶林杂草一直是影响油茶产量及质量的重要因素,有效控制油茶林杂草发生有利于提高油茶林的经济效益及森林健康指标。基于前期湘中油茶林杂草调查结果,结合除草剂的作用机理,有针对性地设计10种不同化学除草剂混合试验,探究不同化学除草剂桶混配方效果,及检测油茶林中土壤除草剂残留含量。结果显示,草甘膦与其他除草剂混合施用效果比草铵膦与其他除草剂的混合施用效果好。此外研究发现,草甘膦与氟磺胺草醚混合施用可用于对油茶林阔叶类杂草防治,草甘膦与精喹禾灵混合处理对油茶林中以白茅等禾本科杂草的防治效果较好。该研究为今后开发适合于湘中油茶林杂草的化学防除技术,提升油茶林杂草的化学防治效果及经济效益提供了理论基础。

Camellia oleifera,is one of four oil plants in the world,occupies an important position in China's agricultural economy,and the weeds in the C.oleifera forest have always been an important factor affecting the yield and quality of C.oleifera.Effectively controlling the occurrence of weeds in C.oleifera forests is beneficial to improve the economic benefits of C.oleifera forests and forest health indicators.In this study,to explore the effects of different chemical herbicide tank-mixing formulations and detect the content of herbicide residues in C.oleifera leaves and soil,10 different chemical herbicide mixture experiments were designed,based on the previous investigation results of weeds in a C.oleifera forest in central Hunan Province,and combined with the action mechanism of herbicides.The results showed that the effect of mixed application of glyphosate and other herbicides.Additionally,the study founded that the mixed application of glyphosate and fomesafen could be used to control broad-leaved weeds in the C.oleifera forest,and the mixed treatment of glyphosate and quizalofop-p had the best of control effect on the grass weeds,such as Imperata cylindrica,in the C.oleifera forest.This research provideed a little research foundation for the future development of chemical control technologies suitable for weeds in C.oleifera forests in central Hunan,and to improve the chemical control effects and economic benefits of weeds in C.oleifera forests.