茶园常用除草剂田间药效试验与残留动态

doi:10.13305/j.cnki.jts.2019.05.010

Abstract

Abstract: The weeds control effect of several herbicides (glyphosate, glufosinate and combination of glyphosate-acetochlor and glyphosate-auxiliaries) and the herbicides residues in the soil of treated plots in the tea gardens were compared. The results show that the glufosinate had a faster control effect on the weeds. The coverage of weeds decreased to 9.15% on the 7^th treatment day. The control efficiency of glufosinate to the Geranium carolinianum L., Sonchus asper (L.) Hill., Conyza canadensis (L.) Cronq．reached more than 95% on the 14^th day. Glufosinate showed a faster degradation (the dissipation ratio was 94% on the 30^th day) in the soil than the glyphosate (the residue concentration was 0.01βmg·kg^-1 on the 58^th treatment day). Therefore, glufosinate might be an alternative herbicide for weed control in tea gardens. Acetochlor, as a closed herbicide, had the potential of inhibiting the emergence of gramineous weeds and faster dissipation rate in the soil (the dissipation ratio was 97% on the 21^th day), and therefore, it was recommended to control gramineous or the other weeds.

Key words: tea garden, herbicide, efficacy, pesticide residue

CLC Number:

S571.1
S482

GAO Wanjun, ZHANG Yongzhi, TONG Mengmeng, MA Huiqin, QIAN Shanshan, WANG Tianyu, LI Yeyun, WU Huiping, HOU Ruyan. Weeds Control Effect and Residues of Several Herbicides in Tea Gardens[J]. Journal of Tea Science, 2019, 39(5): 587-594.

References 15

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Weeds Control Effect and Residues of Several Herbicides in Tea Gardens

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