| As a worldwide pest,Bemisia tabaci has a wide range of damages,which seriously affects the production of economic crops such as pepper,eggplant and tomato.As a famous agricultural product in Hebei Province,Jize pepper is the agricultural pillar industry in Jize area.In this paper,the damage characteristics of Bemisia tabaci in Jize pepper production were investigated.The green control system was composed of using different mesh number of insect prevention net,releasing different mesh number of aphid wasp,releasing different density of Amblyseius cucumeris and using several control measures together to study the control effect of Bemisia tabaci and its impact on pepper production,so as to determine its practical application Use value.The results are as follows?1?The results showed that the passing rate of Bemisia tabaci was 7.1%when 60mesh nets were used;the reduction rates of adult and nymph were 80.1%and 76.4%respectively after releasing 2000 aphid wasps per 667 m2,and the yield was 2550.73%The results showed that the population reduction rates of adults and nymphs of Bemisia tabaci were 66.7%and 70.1%respectively,and the yield was 2550.58 kg·667m-2,and the growth,physiological indexes and quality of pepper were significantly higher than those of the control group.?2?The control effect of green control system on Bemisia tabaci and its effect on pepper production were studied.The results showed that the population density reduction rates of adults and nymphs were 93.1%and 91.5%respectively after using the green control system of Bemisia tabaci.The plant height,stem diameter,crown width,leaf length and leaf width of pepper were 78.40 cm,22.87 mm,82.18 cm,17.45 cm and8.60 cm,respectively,compared with the control group and the experimental group with only one control measure The content of VC and soluble sugar in the fruit reached 88.10mg/100g and 28.45 mg/100g,respectively,and the yield reached 3111.22 kg·667m-2.In conclusion,compared with using one measure to control Bemisia tabaci,the green control system can effectively control the population density of Bemisia tabaci,promote the growth of pepper,enhance the physiological characteristics of pepper,and improve the yield of pepper.The establishment of green prevention and control system is an effective measure to control Bemisia tabaci in Jize pepper,which provides technical guarantee for green and safe production of Jize pepper,and provides technical support for comprehensive control of Bemisia tabaci in other vegetables. |
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