水稻病虫害综合防治五大关系的理性分析

A RATIONAL ANALYSIS OF FIVE RELATIONSHIPS WITHIN IPM OF RICE ——20 Annivery of “Precaution First of All Integrated Pest Controls”Policy Initiated in China

本文论述“预防为主，综合防治”植保方针的理论和实践意义，结合我国水稻病虫害综合防治２０ａ的研究进展，提出综合防治的体系特征及其五大关系：（１）有害生物的种质分化与种型演变；（２）防治体系与预警系统；（３）为害损失与防治指标；（４）多抗性品种的开拓与推广；（５）多效药剂的研究开发与应用。

Theoretical and practical significance of Precaution First of All Integrated Pest Controls policy exerted in China was promoted here. And then based on advancement of integrated pest management (IPM) in rice paddy all over China for last two decades, five relationships within the IPM system were discussed. The relationships involved of (1)genetic differentiation and phenotypic changes of a pest species,(2)control technology system and prealarming management system,(3)damage loss by a pest and its control index,(4)IPM system and its key techniques, and (5)exploitation and extension of multi resistant rice varieties. It was moreover presented how to coordinate IPM with a sustainable development of plant protection.