板栗病虫害要以防治结合为原则 ,及时调查虫情 ,在天敌能控制虫害时尽量不用药。板栗病虫害的几个主要防治时间是 :在４月上旬栗芽开始展叶时 ,用粉锈宁１５００倍液、４０ %氧化乐果１５００倍液 ,防治白粉病和栗大蚜 ,并结合喷施尿素０．２ %、磷酸二氢钾０．１ %、硼砂０． Chestnut pests and diseases should be combined with the principle of prevention and control, timely investigation of insects, natural enemies to control pests as far as possible without medication. Chestnut pests and diseases of several major control time is: chestnut buds in early April when the exhibition leaves, with triadimefon 1500 times, 40% omethoate 1500 times, prevention and control of powdery mildew and chestnut aphids, combined with urea spray 0. 2%, potassium dihydrogen phosphate 0.1%, borax 0.