论文部分内容阅读
大白菜田地膜覆盖种植的避蚜与药剂治蚜二者效果的对比试验结果表明,地膜覆盖的避蚜效果优于苗期2～3次药剂治蚜的效果,但二者均不能完全控制整个生长期内的蚜害;地膜覆盖加上9月下旬与10月中旬两次用药或全生长期内5次用药可更有效地控制蚜害。
The results of comparative experiments on the effects of aphids and aphids treated by film mulching in Chinese cabbage field showed that the plastic film mulching aphids were better than the 2 or 3 times aphids in seedling stage, but neither of them could completely control the whole Aphid damage during the growing season; mulching plus more than five doses in late September and mid-October or twice during the whole growth period helped control pests better.