The investigation of downy mildew of off - season cabbage and its pollution - free control experiment were earned out in daxi town with a high elevation , dafang county , guizhou 摘要2005年，在黔西北地区大方县达溪镇进行了夏秋反季节甘蓝霜霉病发生危害调查及田间药剂防效试验。
The result showed that the resistance was obvious different between different germplsm even though no species with immunity from p . viticola within those provided varities 结果表明，在供试品种中，没有对霜霉病完全免疫的酒葡萄品种，但不同酒葡萄品种间抗性存在着显著的差异。
The antibiotic 2507 has also satisfactory effect for controlling chinese cabbage downy mildew disease infected by peronospora parasitica fr . with efficacy 87 . 5 % in field test 结果表明，抗生素2507在温室人工接菌情况下，防治黄瓜疫病的效果可达95 %以上，田间小区防治小白菜霜霉病的效果达到87 . 5 % 。
The results showed that efficacy of 16 isolates among them was higher than 80 % , and the isolate 2507 was the best one with efficacy over 95 % on the cucumber disease by artifical inoculation after reevaluted 把防治效果达80 %以上的菌株作为初筛入选菌株，结果选出16个菌株进入复筛；然后对其产生的抗生素2507在温室进行防治黄瓜疫病试验和田小区防治小白菜霜霉病试验。
The results showed that the downy mildew occurred on the first ten - day of august and the disease index raised with increasement of the cabbage plant age , and the disease index was from 1 . 23 ( the first ten - day of august ) to 35 . 31 ( the last ten - day of september ) 结果表明， 8月上旬至9月下旬均有霜霉病发生， 8月上旬开始发病，病情随甘蓝株龄的增加而上升，病情指数1 . 23 ~ 35 . 31 ，以9月下旬最高。
The resistance of 7 grapevine varieties to plasmopara viticola was estimated by natural infection and inoculation on leaf discs in vitro , as well as artificial inoculation on plants in the field , in the meantime , the regular of p . viticola and three biochemical contents were also determined 摘要利用7个酒葡萄品种对霜霉病抗性进行了鉴定，并研究了不同感病性酒葡萄品种霜霉病的发生情况及霞多丽品种叶片内三项生化指标的变化。
This paper describes fluopicolide , a new fungicide for control of oomycete diseases such as downy mildew and late blight , providing its chemical name , physical and chemical properties , toxicity , route of discovery , mechanism of action , efficacy , patent status , and synthesis methodology 摘要介绍了防治卵菌纲病害如霜霉病和晚疫病的杀菌剂氟啶酰菌胺，内容涉及化学名称、理化性质、毒性、创制经纬、作用机理、药效结果、专利概况与合成方法等。
Major branch knot melon , one section one melon , and the melon is long 35 - 40 centimeters , straightens short melon , no tail yellow line , the bright green meat and skin , and commodity nature is good , high frost - resistant mildew , powdery mildew , black heart and viral disease , the per mu yield is about 10 , 000 kilograms , and the open country all can be planted spring and autumn 主枝结瓜为主，一节一瓜，瓜长35 ? 40厘米，把短瓜直，无尾部黄线，绿皮绿肉颜色光泽亮丽，商品性佳，高抗霜霉病、白粉病、黑心病及病毒病，亩产一万公斤左右，春秋露地均可种植。
