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草甘膦和2,4-D混用对柑橘园杂草的防治效果柑橘冬季用24D保果.docx

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草甘膦和2,4-D混用对柑橘园杂草的防治效果柑橘冬季用24D保果.docx

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草甘膦和2,4-D混用对柑橘园杂草的防治效果柑橘冬季用24D保果.docx

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文档介绍:草甘膦和2,4-D混用对柑橘园杂草的防治效果柑橘冬季用24D保果

  摘要:研究了10.8%草甘膦·2,4-D水剂对柑橘园杂草的田间防治效果。结果表明,10.8%草甘膦·2,4-D AS制剂用量15 750~31 500 mL/hm2几乎对全部禾本科、阔叶类和其它类杂草都有很好的防治效果,防效和41%草甘膦异丙***盐AS制剂用量4 116 mL/hm2相当,显著优于72% 2,4-D丁酯EC制剂用量8 100 mL/hm2的防效,作用较快,持效期较长。
  关键词:草甘膦·2,4-D水剂;柑橘园杂草;防治效果
  中图分类号:S482.4 文件标识码:A 文章编号:0439-811415-3234-03
  Effect of the Mixture of Glyphosate and 2,4-D on Weeds Control in Citrus Orchard
  LI Liang-de,JIANG Chun-lai,LIU Jie,ZHONG Guo-hua
  Abstract: The effect of 10.8% glyphosate·2, 4-D on weed control in citrus orchard was reported. The results indicated that the tested formulation of 10.8% glyphosate·2, 4-D could get good control effectiveness against almost all gramineae, broad-leave and other kind of weeds when applied at the preparation dosage 15 750~31 500 mL/hm2, which was not remarkably different from the 41% glyphosate diisopropylamine salt at concentration of 4 116 mL/hm2 and obviously better than 72% 2,4-D butylate EC at concentration of 8 100 mL/hm2. This mixture was worthy recommended for weeds management with significant efficiency, long period of validity and good safety in citrus orchard.
  Key words: glyphosate; 2,4-D ; citrus orchard weeds; efficiency
  柑橘园往往杂草种类多,发生量大,严重时可显著影响柑橘产量和品质[1],因此柑橘园除草剂需求量巨大。草甘膦类产品是柑橘园杂草防除首选药剂之一,是一个非选择性、传导性、灭生型除草剂[2],它经过植物的茎叶吸收、传导到根部[3],以抑制植物体内氨基酸的生物合成,从而发挥毒性作用。中国是草甘膦生产大国,也是使用大国,长久大量施用草甘膦单剂,相继出现了杂草抗性、防除效果降低、用量增加等问题[4];同时