论文部分内容阅读
广汉县过去在水稻病虫防治上,采用病、虫分治,力求消灭,忽视防治指标,方法单一,偏重药剂防治,防治次数多,仅水稻螟虫就普治2—3次,天敌受到抑制,环境污染重,经济效益不显著,影响了生态平衡。1981年以来我们先后试验示范推广了“二化螟防治策略”和“水稻主要病虫综防最佳组配方案”。结果防治病
Guanghan County in the past in the prevention and control of rice pests and diseases, the use of disease, insects divide and rule, and strive to eliminate, ignore the indicators of prevention and treatment, a single method, emphasis on chemical control, prevention and treatment times, only rice stem borers on the general rule 2-3 times, Heavy environmental pollution, economic benefits are not significant, affecting the ecological balance. Since 1981, we have piloted and popularized the “Stem Borer Prevention and Control Strategy” and “the best combination plan for the prevention and control of major pests and diseases of rice.” The results of disease prevention and treatment