鉴于在园蔬菜病虫发生基数，结合历年我市同时期病虫发生情况并结合长期天气预报等综合分析，今年我省秋冬季蔬菜发生趋势为病虫并重，秋季虫重于病，冬季病重于虫。发生特点：病毒病、黑腐病、根结线虫病、小菜蛾、甜菜夜蛾呈上升趋势；霜霉病、美洲斑潜蝇较往年轻。而保... In view of the occurrence of vegetables and pests in the park base, combined with the perennial pest situation in our city and long-term weather forecast and other comprehensive analysis, the trend of vegetables in our province autumn and winter this year as both pest and disease, insect pests in autumn, sick in winter Insect. Occurrence characteristics: viral disease, black rot, root-knot nematode disease, diamondback moth, beet armyworm is on the rise; downy mildew, the United States leafminer fly younger. And Paul ...