问题
问答题 简答题
怎样防治植物煤污病？
答案
参考答案：
①花木种植不宜过密，适当修剪，以通风透光；
②及时防治蚜虫、介壳虫、木虱等害虫。可喷施40%氧化乐果乳油1000倍液，50%硫磷乳油1500倍液，80%敌敌畏乳油1500倍液；
③发病期可喷代森铵500-800倍液，灭菌丹400倍液。
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怎样防治植物煤污病？
参考答案：
①花木种植不宜过密，适当修剪，以通风透光；
②及时防治蚜虫、介壳虫、木虱等害虫。可喷施40%氧化乐果乳油1000倍液，50%硫磷乳油1500倍液，80%敌敌畏乳油1500倍液；
③发病期可喷代森铵500-800倍液，灭菌丹400倍液。
| 根据对话内容从方框内所给的选项中选出最佳答案，使对话完整,符合逻辑，句意通顺，注意有多余选项。 | |
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| A: You must be really excited about leaving for America tomorrow, Li Ping! B: Yeah. 1 A: Nervous about what? B: I don't know many of the customs and manners in the USA. 2 A: Sure. B: 3 A: Well, it's important to be on time when you're invited for dinner. 4 Americans expect their guests to be on time. B: Then how long may I stay there? A: 5 Or you seem to have come only for the meal. When your friends seem to be getting tired and running out of things, it's time to leave. The next day, call or write a thank-you note to say how much you enjoyed the evening. |