火炬树防控的初步研究

Preliminary Study on Control and Prevention from Rhus typhina

为研究化学药剂和人工方式对火炬树的防除效果,实验比较了10%草甘磷水剂和41%农达的不同浓度、人工砍除地上部分和连根挖除的方式对火炬树的防除效果。结果表明:农达药剂浓度处理Ⅱ5在处理第16d时,毒害率和枯死率均达100%。处理Ⅱ4和Ⅱ6防除效果也在第31d时达到99%和98%。运用人工砍除地上部分和连根挖除方式对火炬树进行防除,由于不能完全挖除火炬树根系,一段时间后仍有一定量根蘖幼苗萌发。结合防除效果和防除成本考虑,41%农达药剂浓度0.3mL.m-2(Ⅱ4)时,其防除效果达99%,可在生产中加以应用推广。

In order to understand the results of the chemical control and human elimination of Rhus typhina, the experiment compared different treatments of different concentrations of two herbicides namely 10% glyphosate and 41% amiton with artificial elimination of overground part and completely removal from the root, The results revealed that the treatment of amiton Ⅱ5 by 16th day had attained 100% ratio of poisoned and withered that the result was obvious. The treatment of Ⅱ 4 and Ⅱ6 by the 31 st day also got to 99% and 98% of above ratios respectively. Owning to incomplete removal of Rhus typhina＇ s root system by artificial measures, there still were seedlings from the root with the time＇ s passing by. Thus such means were only suitable for small areas or had to combine with other methods. In sum, it was concluded that 41% amiton at the density of 0.3ml/m^-2 （ Ⅱ 4） with 99% removal outcome was worth be popularized in production in the view of removal outcome and cost.