树干注射与喷雾施药对核桃霜点病的防治效果试验

Effects of Trunk Injection and Spray on Frost Point Disease( Pestalotiopsis sp). of Walnut

以10%世高水分散粒剂、70%甲基硫菌灵和95%戊唑醇3种药剂为供试药剂,对13~15年生漾濞核桃380株样株进行核桃霜点病防治效果试验。结果表明,在核桃霜点病侵染期按地径1.0mL/cm树干注射70%甲基硫菌灵10倍液,可达到87.56%的防治效果,且优于传统喷雾施药,可克服常规喷雾多次施药,受降雨等外部环境条件和树木高度等限制的缺点。其施药剂量精确,药液利用率高,且不会对环境造成破坏和污染,是核桃霜点病无公害防治的理想途径。

Using 10% Shigao water dispersible granule, 70 % thiophanate methyl and 95 % tebucon- azole, the effects on frost point disease （Pestalotiopsis sp. ） of 13 to 15 years walnut tree were tested on 380 trees. The results showed that applying trunk injection of 70 % thiophanate methyl according to the standard to 1.0mL/cm, the effect reached 87.56 % , which was better than traditional spraying. And trunk injection could be applied once and without the limitation of rainfall and the tree height. Trunk in- jection had the merits of accurate applying amount, high use ratio, without pollution on environment, was an environment friendly control method.