论文部分内容阅读
什么时间喷洒农药好？夏季，各种农作物都会受到病虫危害，也是大量使用农药的节季。什么时间喷洒农药最好呢？一些农民认为，选择阳光强烈、气温较高的中午喷洒农药容易杀死害虫，这实际是错误的。因为此时害虫大部分躲在作物的背光面，加之气温高，农药挥发得快，不容易...
When is spraying pesticide good? In summer, all kinds of crops are endangered by pests and diseases, and it is also the seasonal season for extensive use of pesticides. When is the best time to spray pesticides? Some farmers think that it is actually wrong to choose a pesticide that is sprayed by noon at a high temperature and with a high temperature to kill pests. Because at this time most of the pests hiding in the back of the crop, coupled with high temperatures, volatile pesticides faster, not easy ...