The Research About The Character Of Disease And Insect Pest Occurrence Of Cabernet Sauvignon In Changli

Changli is the major production areas of wine grape in China, which has the reputation of ‘China Wine Grape Village’ and the ‘Chinese Red City’. In recent years, the diseases and insect pests have occurred seriously, restricted the production of high-quality grapes and its yield increase. Therefore, we invested the occurrence of pests and diseases and the key period of disease or pest control in the Changli Huaxia wine grape producing areas and summed up a set of early warning mechanisms of pest and disease in this study. And in order to ensure food safety in the industrial production of grape, economically, safely and effectively control of these diseases or insects. We should implement the policy of “prevention first, comprehensive management”, and reasonable use of agricultural practice, biological agents, chemical pesticides/fungicides and so on.In this study, we invested the main types of pest and insect pests in Great Wall in Changli,Hebei from 2012 to 2014, and analyzed the relationship between meteorological factors and the prevalence of grape diseases and pests. The results are as follows:1. The main diseases of Cabernet Sauvignon in Changli consists of grape downy mildew,white rot, and anthracnose. Other diseases such as grape spike stalk Brown blight, sour rot and gray mold incidence are not serious or intermittent. The main pests consists of Grape Leafhopper, lucorum bug, mealy bug, lycorma delicatula, beetle and felt of grape disease.Among them, the occurrences of Capella of Grape Leafhopper and lucorum bug are the most serious.2. The suitable conditions for grape downy mildew occurreing are 21-25 ℃, 80% air humidity, and 20 mm rainfall. The changes in rainfall and relative humidity are related to the occurrence of white rot disease, which is the sooner the rainy season, the greater the rainfall and the more incidence of white rot disease. Grape anthrax usually occurs in the late growth period of grape, after raining, the weather is wet, and it develops rapidly.3. Low precipitation(average precipitation is about 20mm), high temperature(mean temperature 24-26 degrees)and high air humidity(60%-85%)are suitable for lucorum’s occurrence and propagation. In this case, the number of lucorum much relay on the relative airhumidity. For the award leafhoppers, its occurrence and propagation also need high temperature(mean temperature 24-26 ℃), low rainfall(average precipitation is about 20mm),and 60%-80% of the relative humidity.4. The disease index of Grape downy mildew, white rot and anthracnose showed a rising trend during our investigated periods, the same trends were presented on incidence rates of Grape Leafhopper and lucorum, therefore the prevention and control for diseases and insect pests in grape also should be further strengthened.According to the meteorological factors and meteorological factors and the occurrence of the years, the relevant control measures have been formulated.