摘要
为明确高温火焰对幼龄茶园禾本科杂草最佳防治时期,进一步优化茶园高温火焰除草使用技术.利用手推式高温火焰除草机在幼龄茶园禾本科杂草2～3叶期、5～6叶期、＞10叶期开展高温火焰除草试验,验证高温火焰对不同叶龄期禾本科杂草防除效果.结果表明,在禾本科杂草2～3 叶期、5～6 叶期及＞10 叶期处理后 7d禾本科总株防效为 99.05%、98.31%、86.28%,15 d禾本科总株防效为94.68%、81.63%、49.31%,30 d禾本科总株防效为76.16%、74.88%、27.29%.高温火焰对2～3 叶期、5～6 叶期禾本科杂草防效显著优于＞10叶期.高温火焰对禾本科杂草防效随着叶龄期的增大而逐渐下降.以禾本科杂草为优势种的茶园,应在低叶龄期进行防除,增加防效,延长防治持效期.
Abstract
To clarify the optimal control period for grass weeds,and further optimize the high-temperature flame weed control technology in tea gardens.This study conducted high-temperature flame weed control experiments on 2-3 leaf,5-6 leaf,and＞10 leaf stages of grass weeds in tea gardens using a manually pushed high-temperature flame weeding machine to verify the effectiveness of controlling grass weeds at different leaf ages.The results showed that after treatment with 2-3 leaf stage,5-6 leaf stage,and＞10 leaf stage,the total control effects on grass weeds were 99.05%,98.31%,86.28%after 7 days,94.68%,81.63%,49.31%after 15 days,and 76.16%,74.88%,27.29%after 30 days.The high temperature flame had a significantly control effect on grass weeds in the 2-3 leaf and 5-6 leaf stages than＞10 leaf stages.The con-trol effect of high-temperature flames on grass weeds gradually decreased with the increase of leaf age.In order to increase control effectiveness and extend the duration,tea gardens with grass weeds as the dominant species should be controled in the low leaf age stage.
国家科技期刊平台
NSTL
万方数据