Agro-ecological basis of test questions 4906 Agro-ecological basis of questions First, single-choice (four options in Meixiao Ti answers, select a correct answer, and the serial number of correct answers filled in casual working in parentheses. Meixiao Ti 1 minute, 20 minutes) 1. Agro-ecosystems are (). B. A. artificial ecosystem of natural ecosystems D. C. semi-natural ecosystems closed ecosystem 2. → pink bollworm in this food chain is a gold wasp (). A. grass B. saprophytic grazing food chain food chain D. C. Mixed parasitic food chain food chain 3. Which of the following bio-energy are secondary to (). A. Seed B. C. Wind D. evaporation of precipitation 4. Locusts, grasshoppers turning yellow in autumn and winter weeds will change Tiqu color hue consistent with those of grass, which is caused by what? () A. Energy Flow B. D. information flow logistics value stream C. 5. Gaseous cycle is characterized by (). A. speed, cycle speed and more complete B., cyclic incomplete C. slow D. slow circulation more completely, incomplete cycle 6. Phosphorus cycles are typical (). A. vapor deposition circulating circulating B. Biological cycle of D. C. geology cycle 7. In the process of material recycling was temporarily fixed, the storage place called the library. According to volume size, material and speed of exchange activities, the library can be divided into two kinds of exchange database and store the following are the exchange of library library is (). A. Air Library B. Library C. animals, water the soil library database D. 8. Ecological pyramid commonly used () said, because that method is not body size, composition, metabolic rate effects, energy transfer accurately to be regressive. A. number of the pyramid of biomass pyramid B. C. the number of individuals pyramid energy pyramid D. 9. The following organisms can carry out secondary production is (). A. Fruit B. wheat C. Rice D. Niu 10. Soil conditions are optimal for the state&#39;s primary productivity (). A. Photosynthetic productivity of light and temperature Productivity B. Soil productivity, climate productivity D. C. 11. Soybean potassium content of 4 kg, the soybean yield of 100 kg, when the potassium content of 6 kg, the grain yield of 110 kg, if the soybean price is 2.5 yuan / kg, the marginal yield (). A.100 B.110 kg C.10 kg kg kg D.5 12. Nature, most of the spatial distribution pattern of natural population belongs to (). Random groups of type B. A. C. D. uniformly dispersed type 13. In a restricted environment conditions, population growth in general was (). Discrete exponential growth of B. A. D. C. Logistic growth continuous growth 14. Nitrogen-fixing rhizobia and legumes are among the interaction between (). A. mutualism parasitism D. C. B. original neutral role in co-operation 15. Devastating destruction of the original vegetation in the formation of bare ground after the start of the succession, known as (). A. primary succession Secondary succession B. C. D. long-term succession rapid succession 16. By the same or similar life form ecological requirements of species composition in space, morphological and ecological characteristics of the community structure is relatively basic unit is called (). A. small community lamellar B. C. D. ecotone patches 17. Activities temperature and minimum temperature difference between biology called (). A. B. accumulated temperature effective temperature effective temperature D. C. Accumulated 18. Biological tissue or cells in vivo environment is called (). A. Regional Environmental B. Habitat C. environment within small environment D. 19. Industrial &quot;three wastes&quot; means (). A. wastewater, waste gas, waste residue B. waste soil, waste gas, waste residue C. waste, emissions, waste D. wastewater, mining waste, waste 20. Corn and soybean intercropping, use of Coccinella septempunctata, eating aphids and other aphid predators; This is the () in the ecological agricultural practices in the specific application. A. Principles of the overall effect of Principle B. C. Principles of material recycling and regeneration of biological populations with D. Principles of Health and each g Second, multiple-choice questions (five in the Mei Xiaoti alternative answers to choose from 2 to 5 correct answers, and the serial number of correct answers were filled in the casual working in brackets, multiple choice, less selection wrong selection not score. Meixiao Ti 2 points, 10 points) 1. Agro-ecosystems of the natural control methods are (). A. procedures for regulating B. C. redundant control feedback control D. E. optimal control with dynamic control 2. Agro-ecosystem types of the time structure of main (). A. Population chimeric B. C. Population density junction type of artificial facilities D. vertical structure of the level of structural type E. 3. According to the different value, supplemental to main (). A. Replacement of the energy production of energy B. C. Energy Consumption D. Renewable energy gain of energy E. 4. The negative interactions between species main methods (). B. Competition C. A. original co-role partial damage D. E. predatory parasitic 5. According to the adaptability of different light intensity, light intensity adaptation type plants main (). A. positive B. negative plant shade-tolerant species of plant C. D. E. hi light neutral plant plant 3, Glossary (Paper 3, a total of 15 points) 1. Steady-state control 2. Supplemental energy 3. Geology major cycle 4. Community 5. Chinese Ecological Agriculture 4, short answers (Paper 7 points, 35 points) 1. Select which principle should be noted that agricultural technology? 2. Agro-ecosystems in the food chain plus What is the significance and role of the ring? 3. K-Strategy brief biological characteristics. 4. Brief life form and ecological concepts and the difference. 5. Pests of biological control techniques generally consist of? 5, essay questions (Paper 10 points, 20 points) 1. What is the economic effects of agricultural technology? Analysis of the impact of agricultural technology and economic factors and economic effects of commonly used systems theory. 2. On the use of agricultural natural resources of the main issues arising.