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1.菠萝粉蚧凋萎病:①种植无粉蚧的种苗,并在种植前用40%乐果乳剂500～800倍液浸种苗5～10分钟消毒。②在8～9月虫量多时用40%速扑杀乳油700倍液,或25%喹硫磷乳剂800～1000倍液。或春、秋、冬用松脂合剂10～20倍液喷杀。③消灭传播粉蚧的蚂蚁,用敌百虫800倍液喷杀蚁穴。④此外,要加强栽培管理,合理施肥,增强植株抗病性。 2.菠萝心腐病:①选健壮种苗,剥去种苗基部数叶,用50%多菌灵可湿性粉剂1000倍液
1. Pineapple mealybug’s wilting disease: ① planted mealybug seedlings, and before planting with 40% dimethoate 500 ~ 800 times soaking seedlings 5 to 10 minutes disinfection. ② In August to September when the amount of insect with 40% speed to kill EC 700 times, or 25% quetiapine 800 to 1000 times the liquid. Or spring, autumn and winter with pine oil mixture 10 to 20 times spray kill. ③ eliminate the spread of mealybug ants, 800 times with trichlorfon spray ant nest. In addition, to strengthen the cultivation and management, rational fertilization and enhance plant disease resistance. 2. pineapple heart rot: ① choose robust seedlings, stripped of the number of seedlings leaves, with 50% carbendazim WP 1000 times