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文章以系统论的思想,对西藏农田麦作生态系、果园生态系和保护地蔬菜生态系等主要农业生态系中作物与有害生物的互作进行了系统分析。指出农田麦作生态系较为复杂,作物与有害生物互作处于相对原始的、稳定的平衡状态;而果园和蔬菜主态系则相对简单,不稳定,作物—有害生物互作的结果是作物的易损性。文章应用有害生物综合治理的哲理,对上述主要农业生态系中有害生物的综合治理进行了理论性的探讨。指出在农业发展中应维持和恢复生态系中作物—有害生物互作系统的自然平衡的稳定状态利用自然(生物的,物理的)制约医索,创造和继承作物的遗传多样性,改良农业耕作措施,辅以有效而准确的化学防治,把有害生物种群控制在经济阈限以下。创造一个更高层次稳定、平衡的农业生态系。文章最后讨论了西藏农业发展中有害生物综合治理的问题和前景。
The article systematically analyzes the interaction between crops and pests in the major agro-ecosystems such as the wheat crop ecosystem in Tibet, the orchard ecosystem and the vegetable ecosystem in the protected area, using systematic theory. It is pointed out that the cropland wheat crop ecosystem is more complex, crop and pest interactions are relatively primitive and stable, while the main state of orchard and vegetable are relatively simple and unstable. The crop-pest interaction result is crop easy Damage. The article applies the philosophy of integrated pest management to conduct a theoretical discussion on the comprehensive management of the pests in the above major agro-ecosystems. Pointed out that a stable state of natural balance of crop-pest interaction systems in ecosystems should be maintained and restored in agricultural development Naturalistic (biological, physical) use of natural resources (biological, physical) to constrain the genetic diversity of crops, to create and inherit crops, to improve agricultural practices The measures, combined with effective and accurate chemical control, keep the pest population below the economic threshold. To create a higher level of stable and balanced agricultural ecosystem. Finally, the article discusses the problems and prospects of integrated pest management in agricultural development in Tibet.