Studying On Techniques Of Main Pests Prevention And Contral In The Process Of Returning Farml To Forest-In Guyuan Arei Optimizing Deployment Efects Of Forost Maragement Forest

Guyuan City County located in the Loess Plateau west, typical of Loess Hills area, is the state for the construction of the ecological environment focused on one area. Over the years, the state has invested a lot of manpower, resources, the implementation of a series of major projects, a strong acceleration of the local ecological environment construction process. But with the passage of time and the expansion of the scale of construction, partially exposed in the low survival rate of afforestation and preservation rate low, grass and trees grow slowly, the frequent occurrence of harmful biological issues, thereby affecting the effectiveness of ecological and environmental construction. In forestry ecological construction, the master of forest pest outbreak of epidemic, the reasons for the disaster, process, and its ecological factors and the interrelationship between, and starting from the basic principles of ecology and explore plantation ecosystem diversity, stability and biological systems to withstand disasters the mechanism and capacity, integrated application of existing technology and harmful biological control forest ecological methods and the theory in reforestation, forest assembled supporting technical measures applicable to explore ecological forest pest rodent control method and the specific model and optimize the distribution of vegetation patterns, assembly integration is now a mature technology and construction Pest Management system, to consolidate and increase the current and future effectiveness of the construction of the ecological environment is very urgent. In 2001, the State Forestry Bureau Guyuan City County Ningxia Hui Autonomous Region will be identified as"the northwest region rodent integrated forest pest control technology pilot sites."County to seize this great opportunity, in order to protect forest resources, strengthen forest harmful biological control for the purpose of introduction and absorption forestry pests Integrated Control latest scientific and technological achievements and advanced and practical drought, water-saving techniques, reviewing and promoting local forestry production practice practical skills and experience, has been basically the the result of the drought, a tried and tested reforestation, forest technology and forest harmful biological control technology. Mouse author directly involved in the integrated control technology, Poplar Cerambycidae integrated control technology, Diprion integrated control technology, pollution-free economic forest pest control techniques, set-planting technology application and promotion, vegetation distribution and drought afforestation technology six harmful biological control technology pilot demonstration project inquiry study of work, adoption of the test data analysis and demonstrations to promote the survey, the area of forest pests distribution of harmful, control means and methods are summed up, raised rat Star grams application and multi RPA on rodent control technology,"Nursery of"Falling Leaves lax control techniques, and create a mixed forest of light Anoplophora glabripennis control technology, as well as non-pollution control techniques Medlar Collecting planting technology in the fight against diseases and pests such as the impact of the conclusion basically formed a relatively complete Guyuan City County forestry ecological construction technology support system. Its main results reflected in the first screening of Beauveria bassiana, and Paecilomyces from matings of Beauveria bassiana Larch Sawfly larvae cocoon, Lin pilot effect were 56%, 74%, 70.6%. The introduction of Beauveria bassiana of prevention and control of 50 acres, Control 35.2% for the use of biological control has laid a theoretical basis for the production, providing a scientific basis for teaching. Through field analytical investigation, Dr. Larch Tenthredinidae region parasitic wasps are insects cocoon, parasitic flies, Beauveria bassiana and viral diseases, parasitic respectively for the 5%-8%, 6%-8%, 10%-20%, 3%-5%, science and technology workers through the collection, separation, training, breeding, the first local application of Beauveria bassiana Larch Sawfly larvae cocoon, Control 70.6% for the use of County home-grown breed laid the foundation for microbial pest control. Medlar use ladybug control aphids, gall midge and other pests, improve wolfberry fruit quality, grade, insect pest control in the future to lay a good foundation. Mowing, build Taiwan, Zhao Ying rabbit anti-rat, rabbit anti-rat feeding foxes released for the protection of the ecological environment and to the healthy development of the biological chain broken chain up again laid the foundation. The first analysis of the ecological environment on the impact of pest pika for future forestry pest pika integrated management laid the theoretical foundation. Research sorted out Gansu zokor biological study and propagation of the first study of the population in Gansu zokor abeach, grassland and Airbus large concentration of small scattered, small concentrated six months, the habits of large decentralized. Integrated Management provides a theoretical basis for the production, providing a scientific basis for teaching.