桑品种对桑蓟马的抗虫性研究

通过对不同品种桑蓟马发生情况的调查,发现桑品种之间对桑蓟马存在一定的抗性差异,蚕专4号和湖桑7号的抗性最强,新一之濑和湖桑32号容易受害.桑蓟马在枝条上的分布情况是第4叶明显多于第8叶.5～9月桑蓟马在田间的发生受气候及人为因素的影响较大,高温干旱有利于桑蓟马的发生,阴雨多湿的气候条件、夏伐和化学防治是影响桑蓟马发生的重要因素.

Study on the Relationship Between the Pest Resistance and Different Mulberry Varieties

As a result of the research on harm of Pseudodendrothrips mori Nima,the pest resistance between different mulberry varieties was differences.The pest resistance of Canzhuan4 and Husang7 were the strongest,but Xinyizhilai and Husang32 were easily to be jeopardized.The quantities of Pseudodendrothrips mori on the 4th leaf were obviously much more than the 8th leaf.The damage caused by Pseudodendrothrips mori on the mulberry tree leaf in fields from May to September was influenced by climate and human beings activity very much.High temperature and drought were favorable for it's occurrence and harm while overcast and rainy weather,summer pruning and chemical prevention and cure were just the opposite.