| 1. | Chemical control is the last resort .
化学防治是最后的措施。 |
| 2. | The early definitions stressed a blend of biological and chemical control .
早期的定义强调生物和化学防治结合。 |
| 3. | Chemical control of continuous cropping disease on gladiolus hybrid
唐菖蒲重茬病害的化学防治试验 |
| 4. | Studies on biological characteristics and chemical control of ceroplastes jponicus green
日本龟蜡蚧生物学特性及化学防治研究 |
| 5. | Problems that can ' t be ignored during the control of citrus pests and diseases by chemicals
柑桔病虫害化学防治不容忽视的几个问题 |
| 6. | Pooulation dynamics of bemisia tabaci on different host plants and its chemical control
烟粉虱在不同寄主作物上的种群动态及化学防治 |
| 7. | Under current conditions , chemical prevention and control is still an indispensable measure
在目前的环境情况下，化学防治仍是一个必不可少的重要措施。 |
| 8. | With chemical control , emphasis should be put on strategies , thresholds , and the selection and spray techniques of pesticides
防治策略、防治指标和施药技术是化学防治的关键。 |
| 9. | Planting resistant cotton varieties , agricultural and chemical control are important measures of integrated management of cotton bollworm
本文提出适合江西棉区推广应用的棉铃虫综合治理措施,包括种植抗虫棉、农业防治、化学防治等。 |
| 10. | Finally , available chemical controls such as seed treatments and foliar sprays should be tested in the experiment after all other control methods are in place
最后在采用其它防治措施后，也应试用化学防治方法，例如，浸种、叶面喷药等。 |
