Dissertation > Excellent graduate degree dissertation topics show

The Preliminary Trapping Test of Rubber Borers by Aggregation Pheromone in Rubber Plantation

Author: YangSongLing
Tutor: ZhouXiang
School: Hainan University
Course: Forest Protection
Keywords: rubber borer aggregation pheromone field trapping meteorological factors temperature
CLC: S763.3
Type: Master's thesis
Year: 2010
Downloads: 92
Quote: 0
Read: Download Dissertation

Abstract


The rubber borers are the general called of the bark beetles which damage the rubber trees badly, including some species of Platypodidae, Scolytidac, Lyctidae, Lymexylidae and Bostrychidae. In recent years, the rubber borers have been frequent pest form past time sporadic and threatened our country rubber industry. In Hainan province, the rubber borers species included Xyleborus leborusaffinis Eichh, Xyleborus aquilus Blandford, Xyleborus fornicatus Eichhoff, Xyleborus penforans Wollaston, Platypus calamus Blandford, Heterobostrychus aequalisWaterhouse, Sinoxylon japonicum Lesne etc. The rubber borers adults do not damage the general health rubber trees except by the typhoon, cold injury, disease and lightning damage etc. When the rubber trees xylem exposed and parts cortex splited and the trunk and branches growth weakness, the rubber borers adults get into rubber tree xylem and lay eggs in the mother tunnel, after the eggs hatch, the larvae make tunnel around for nutrition in the mother tunnel, while the formation of sub-tunnel borer, mature larvae pupate in the sub-tunnel till broken out the tree bark to damage the other rubber tree. As beetles hiding and controlling extremely difficult, conventional method of spraying chemicals on their hard work, therefore, using aggregation pheromones to trap the rubber borers was a nice choice. The bark beetle aggregation pheromone is an insect pheromone. Using aggregation pheromones to trap pests was not in contact with plants and other agricultural products in the field and no using pesticides and environment-friendly. Using bark beetle aggregation pheromone to trap rubber borers test in rubber plantation and the results show that:1. Among of common bark beetles aggregation pheromone, (s)+cis-Verbenol and (s)-(+)-Ipsidenol was a good trapping effect in rubber plantation. Two kinds of bark beetle aggregation pheromone are better effect and their concentrations are lower in the test. Alone verbenone was less effective trapping bark beetle, and obvious enhance on mixing a-pinene.2. Using cis-Verbenal and (s)-(+)-Ipsidenol to trap rubber borers suited dosage was 25.0mL 800 times and hung and stabed holes 150 on a small bag in the rubber plantation for large-scale applications.3. A light, simple, recyclable, no pollution simple rubber borers trap was designed and made in the article, and it is low cost and wide application prospect.4. The method of using simple rubber borers traps was reported which hanging high was 2.5m and distance was 50m. The hang bag on simple rubber borers traps was better effect than letting liquid aggregation pheromone in a bottle.5. Using aggregation pheromone to trap rubber borers related to the seasonal variations, and field trapping effect was directly related to meteorological factors, for example wind, rain, extreme cold and heat were not conducive for trapping rubber borers. Best of all time for traping bubber borers was in winter, low rainfall and 22-28℃in the rubber plantation and each year in December to next January.

Related Dissertations

  1. Preparation and Electrocaloric Effect of BaxSr1-xTiO3 Ferroelectric Thin Films,TB383.2
  2. Measurement of the Surface Impedance of the High Temperature Superconducting Thin Films with Coplanar Transmission Line,O484.5
  3. Study on Contact Fatigue Life Based on Grease Variation with Temperature,TH117.22
  4. Research on Temperature Measurement Technique Based on CCD Image Sensor,TH811
  5. Development of Explosion Flame Temperature Measurement System Based on Multi-Spectral Thermometry,TH811
  6. Temperature Drift Modeling and Compensation of Fiber-Optic Gyroscopes,V241.5
  7. Simulation Analysis on Temperature Stress of RCC Arch Dam and Its Construction Joints Design Research,TV642.2
  8. Analysis and Study of Abutment Stability in Concrete High Arch Dam by Three-Dimensional Nonlinear Finite Element Method,TV642.4
  9. Research on Nozzle Plume Temperature Distribution Measurement System,V434
  10. Numerical Analysis of Flow Process in a Molten Carbonate Fuel Cell,TM911.4
  11. Experimental Research on Concretion Characteristics of High Temperature Syngas in Integrated Gasification Combined Cycle System,TM611.3
  12. The Basic Research of Axial Flux Inductor Type High Temperature Superconducting Motor,TM37
  13. Research on Temprature Controling Technology of Laser Diode with Thermoelectric Cooler,TN248.4
  14. Research on Millimeter Wave Imaging with Scanning Array,TP391.41
  15. The Development of Electric Control System for Product Line of Cross-Linked Cable,TP273.5
  16. Research on Temperature Control System for Laser Diode,TP273
  17. Design and Study of Temperature Chamber Control System in Servo Table,TP273
  18. Research on Temperature Control System for High-Performance Oven-Control Crystal Oscillator (OCXO),TN752
  19. Fly Ash study of low temperature ceramic foam,TU52
  20. Photosynthetic Apparatus Response to Heat Stress and the Mechanisms in Two Different Cotton with Various Leaf Colours,Q945.11
  21. Cultivation and Effects of Environmental Factors on Carrying WSSV Virus of Litopenaeus Vannamei,S945

CLC: > Agricultural Sciences > Forestry > Forest Protection > Forest Pest and Disease Control > Pest and its control
© 2012 www.DissertationTopic.Net  Mobile