病虫害的预测可分为长期、中期和短期预测。在果树病虫害防治中,最常用的主要是中、短期预测。根据预测,在病虫害达到防治指标时及时进行药剂防治,可以减少喷药次数,提高防治效果。选择农药品种的原则是对目标病虫高效,而对人、畜安全,尽量不伤害天敌,不污染环境。根据我们正在 Pest prediction can be divided into long-term, medium-term and short-term forecasts. In the fruit tree pest control, the most commonly used is the medium and short-term prediction. According to the forecast, in the pest control index to achieve timely prevention and control, you can reduce the number of spraying, improve the control effect. The principle of selecting pesticide varieties is to efficiently target pests and diseases while keeping people and livestock safe and try not to harm natural enemies or polluting the environment. According to what we are