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晚疫病是越南马铃薯上最重要的病害。各马铃薯产区均有发生。在红河三角洲地区晚疫病的发生通常比较晚 ,从 12月下旬即第二个生长季后半期开始发病 ,在 1月至 2月气温较低、湿度较大时 ,晚疫病常常严重流行。在Sapa地区 (北部高原 ) ,整个生长季晚疫病对马铃薯作物都是主要威胁。在感病品种上病害的发生和严重度可达到10 0 %。在大叻地区 ,在干旱季节 (11- 4月 )晚疫病发生最轻 ,而在雨季 (5 - 10月 )严重流行。在越南 ,还未进行晚疫病菌生物学和流行学方面的基础研究。对晚疫病防治研究主要集中在筛选新的杀菌剂。大部分工作集中在抗病育种和抗病品种的筛选。目前需要进行晚疫病综合防治、流行学、晚疫病菌生物学和抗病育种方面的深入研究和培训
Late blight is the most important disease on the potato in Vietnam. The potato producing areas have occurred. Phytophthora infestans usually occurs late in the Red River Delta from late December to late second half of the growing season. When the temperature is low from January to February, late blight is often prevalent when humidity is high. In the Sapa region (northern plateau), late blight throughout the growing season is a major threat to potato crops. The incidence and severity of disease in susceptible varieties can reach 100%. In Dalat, late blight is the lightest during the dry season (November-April), and is severe during the rainy season (May-October). In Vietnam, basic research has not been conducted on the biology and epidemiology of Phytophthora infestans. Research on the prevention and control of late blight mainly focuses on screening new fungicides. Most of the work focused on the screening of disease-resistant breeding and disease-resistant varieties. Currently there is a need for in-depth research and training in the integrated prevention and control of late blight, epidemiology, Phytophthora infestans biology and disease-resistant breeding