论文部分内容阅读
乳浆大戟是北美大平原地区的重要害草。1987年在辽宁、内蒙进行的中美联合考察发现,该草在辽宁生长矮小,分布零散,天敌群落不丰富,而在内蒙则较粗壮,形成灌丛,有较丰富的天敌群落。在内蒙发现5种重要的昆虫天敌及2种具有应用前景的锈病菌,有可能成为控制北美乳浆大戟为害的有效天敌。这是首次中外科学家在我国合作进行杂草生防调查研究。
Gramineae Euphorbia is an important pest of the Great Plains in North America. In 1987, the joint inspection conducted by China and the United States in Liaoning and Inner Mongolia found that the grass grows little and sparsely distributed in Liaoning Province. The natural enemy community is not rich, while in Inner Mongolia it is relatively thick and strong, forming a thicket with abundant natural enemy communities. In Inner Mongolia, five important insect natural enemies and two rust pathogens with application prospect were found, which may become effective natural enemies to control North American whey euphorbia. This is the first time that Chinese and foreign scientists conducted cooperative research on weed prevention and biological control in China.