沼液对葡萄叶蝉及霜霉病的防治效果

Effect of Biogas Slurry on Control of Leaf Hopper and Downy Mildew in Vitis vinifera L

研究了不同浓度沼液喷施对葡萄叶蝉及葡萄霜霉病的防治效果。田间和温室试验各设6个处理,从葡萄展叶期开始定期喷施不同浓度沼液,开展霜霉病病原菌接种试验和叶蝉危害观察试验。结果表明,不同浓度的沼液喷施对葡萄叶蝉危害防治具有一定的效果,与未喷施沼液的T_(0)相比,露地栽培叶蝉危害显著降低,且随着喷施沼液浓度的提高而逐步下降,喷施沼液原液叶蝉危害率为17.40%,防治效果达49.12%;不同浓度的沼液喷施葡萄叶片对不同栽培环境下(露地和温室)葡萄霜霉病均具有防治效果,且喷施80%浓度沼液效果最显著,防治效果分别达58.54%和50.56%。研究结果揭示了沼液在葡萄病虫害防治中的作用,沼液可在葡萄栽培中得到综合利用。

Control effect of spraying biogas slurry with different concentration on grape leaf hopper and grape downy mildew was studied.There were 6 treatments in field and greenhouse experiments.Inoculation test of downy mildew pathogen and observation test of leaf hopper harm was carried out by spraying biogas slurry with different concentrations from grape leaf opening stage.Experimental results showed that different concentrations of biogas slurry spraying had a certain effect on the harm of grape leaf hopper.Compared with T_(0) without biogas slurry spraying,harm of exposed land leaf hopper was significantly reduced,and gradually decreased with the increasing of biogas slurry spraying concentration.The harm rate of biogas slurry spraying leaf hopper was 17.40%,and the control effect was 49.12%.Spraying grape leaves with different concentration of biogas slurry has the control effect on grape downy mildew in different cultivation environments(open field and greenhouse),and 80%biogas slurry has the most significant control effect,which was 58.54%and 50.56%,respectively.Results revealed role of biogas slurry in the control of grape diseases and insect pests,which was conducive to comprehensive utilization of biogas slurry in grape cultivation.