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农业生产是人类根据生物圈的“能量流”和“物质流”的基本规律,利用各种生物(包括动、植物和微生物)特有的生理、遗传等机能,与阳光、空气、水、土等自然环境的相互作用,通过合理利用自然界的物质和能量并经济有效的投入劳动力,进行生物再生产,提供人类所需要的食物、原料和生物能源,创造人类生活和生产的良好环境条件。农作物是构成农业生态系统的主要组成部分之一,也是病虫赖以生存的栖息场所和营养来源。在某种意义上,作物生长好,产量高,客观上为病虫生存、繁殖提供了有利条件。作物病虫与有益生物之间的关系是相当复杂的,它们相互依存,相互制约,共同受温度、湿度、雨、风、土、气等非生物因子的影响。农作物的变化又直接或间接地引起病虫和有益生物的波动。
According to the basic rules of “energy flow” and “material flow” in the biosphere, agricultural production is a natural way for humans to use natural and genetic functions unique to various organisms including animals, plants and microorganisms to interact with sunlight, air, water, soil and other natural Environmental interaction, through the rational use of the material and energy in nature and the economic input into the labor force, biological reproduction, to provide human needs of food, raw materials and bio-energy, create human life and production of good environmental conditions. Crops are one of the major components that make up agro-ecosystems and are habitats and sources of nutrients for diseases and pests. In a sense, good crop growth and high yield objectively provide favorable conditions for the survival and reproduction of pests and diseases. The relationship between crop pests and beneficial organisms is rather complicated. They are interdependent and mutually restrictive and are jointly affected by abiotic factors such as temperature, humidity, rain, wind, soil and gas. Changes in crops, in turn, directly or indirectly cause fluctuations in pests and beneficial organisms.