Abstract:

Based on the systematical investigation and observation, the population dynamics, damage characters and effects of different control measures of cucumber pests was studied in greenhouse in Shaanxi province, and the sustainable control measures of greenhouse pests were put forward to provide a technical support for production of green-food cucumber. The result showed that there were 26 species of cucumber pest in greenhouse, the main pests were Liriomyza sativae Blanchard, Bemisia tabaci (Gennius) and Polyphagotarsonemus latus (Banks). There were 14 to 15 generations of Liriomyza sativae Blanchard in greenhouse, the peak period was from March to May, which generally led to 5% ~ 10% loss in cucumber yield, severe cases, over 20%. There were 10 to 12 generations of Bemisia tabaci (Gennius) in greenhouse, the peak period was from March to June, which generally led to 15% ~ 50% loss in cucumber yield, even failed in when being serious. There were 10 to 13 generations of Polyphagotarsonemus latus (Banks) in greenhouse, the peak period was from April to June, which generally led to 10%~15% loss in cucumber yield, severe cases, over 30%.Liriomyza sativae Blanchard and Bemisia tabaci (Gennius) could not overwinter in natural environment of Northern Shaanxi and Guanzhong Region. Preventing net, sterilizing greenhouse before cucumber were planted and yellow sticky traps had a good effect on controlling these three kinds of pest.