多效唑与草甘磷对果园杂草的影响研究

Effects of Paclobutrazol and Glyphosate on Orchard Weeds

采用草甘磷与多效唑综合运用来控制梨园的主要杂草,以探索对果园杂草的种类、高度与密度进行有效控制的途径。结果表明:试验的处理中(草甘磷、多效唑、草甘磷+多效唑),以草甘磷+多效唑的处理对禾本科杂草的生长抑制与促进分蘖效果最为理想,使田间杂草密度大大增加,达到了类似于人工生草的效果。该处理对阔叶杂草的生长也表现出强烈的抑制作用,达到理想的控制效果。

In order to explore an effective method to controlling the varieties, height and density of orchard weeds, an integrated application of paclobutrazol and glyphosate was used to control the main weeds in pear orchard. The results showed that among three test treatments （glyphosate, paelobutrazol and glyphosate ＋ paclobutrazol）, the effect of growth inhibition and tillering acceleration of glyphosate ＋ paclobutrazol on grassy weeds was the best. The treatment of glyphosate ＋ paclobutrazol could increase the weeds density greatly and reach an effect of artificial planting grass similarly, and it also expressed a strong inhibitory effect of this treatment on broadleaf weed （annual fleabane herb）, which reached an ideal controlling height.