Research On Main Pests Population Dynamics And Relevane Non-pollution Control Techniques Of The Lycium Barbarum L. In Jing Tai Gansu Province

This text regarded important economic crops wolfberry of Jing tai Gan su province as the research object, Investigated the number of wolfberry′s main insect pests and natural enemies in different culture district and extent of injury in JingTai during March to October in 2008,found out the main pests annual growth and dynamic under different .wolfberry main producing region of Jing tai Gan su province,selected the different of environment-friendly pesticides that suitable for the wolfberry grows and pests ,made prevention and control technology and tactics for wolfberry.They are provided technological basis and practise the foundation for wolfberry development. The result shown:(1) This text investigated the number of wolfberry′s main insect pests and extent of injury in JingTai .Found out Wolfberry aphid,Wolfberry plant louse ,wolfberry pest mite and Jaapiella sp .are main pests,the main pests annual growth and dynamic under different.The results showed that : plant louse had 4 generations per year Present 3 pest periods in the whole year; Mite is the most appear nearly aboat 10 generations per year, Wolfberry aphid accumulate appear peak period of 2 times including mid-June and the beginning of September; Jaapiella sp .had 2 generations per year, it accumulate appear peak period of 2 times including April and August.(2) The field trapping technology used for contrilling Aphis sp. By sticky straps . The trap efficient of different kinds of color sticky traps The results showed that : The yellow is the best for Aphis sp. in the all kinds of color .The blue is the best for Psilothrips indicus Bhafti.different height the traps hanged were tested, The results showed that :for the height yellow sticky traps placed at 20 cm high ,the spacing 1.5m is proper .(3) The dynamics of the natural enemy community was studied in the wolfberry fields . during all the survey period ,In the soybean intercropping fields quantity and species of the natural enemies and diversity index of the natural enemy community were affected greatly when the soybean was cradled.It is also shows that interplanting patterns can obviously lower diseased plant rate .the pattern of 3 multiplied by 3 is the best one among the different pattern.(4) the major pest of Chinese wolfberry Eriophyidae experimental study of chemical control. mite to 0.9% times 50% Su-2000 phoxim Pharmacy experiment 1000 times. The results show that: In: 7d spray once, 5d spray once, 3d spray once, the last two days of the spraying process, in which a 3d best spray; two days the worst effects .(5) Experimental study on pollution-free pesticides. To 800 times, 1000 times, 1200 times the bio-pharmaceutical and Oxymatrine 4.5°Be, 3°Be as the main agents of Lime Sulphur. The results show that: Oxymatrine effective control aphids, of which 800-fold 24 hours after Oxymatrine the control effect of 98.33%, efficacy period of 35 days or so; 3°B e Lime Sulphur used to spray than 4.5°Be Lime Sulphur economical.