昭通地区不同管理模式苹果园果树蓟马种类组成及其种群动态

Species and Population Dynamics of Thrips in Different Kinds of Apple Orchard in Zhaotong

2012年4—10月对昭通地区有机示范园、常规管理园和化学防治园3类不同管理模式苹果园苹果树蓟马种类及其种群动态进行了系统调查。结果表明:在昭通地区苹果园苹果树蓟马有3种,分别为西花蓟马(Frankliniella occidentalis)、棕榈蓟马(Thrips palmi)和八节黄蓟马(T.flavidulus),其中西花蓟马为主要种类,占总数的58.62%,其次是棕榈蓟马,占总数的37.93%。3类果园蓟马的危害程度为有机示范园>常规管理园>化学防治园。从发生期来看,棕榈蓟马有1个发生高峰期,在4月下旬—5月中旬;西花蓟马有2个发生高峰期,分别在4月下旬—5月中旬和7月中上旬。蓟马类的危害期主要在4—7月,8月后随着气温的下降蓟马种群数量明显降低。

Thrips species and population dynamics on apple were surveyed in three kinds of apple orchards from April to October in Zhaotong City（organic demonstration orchard,routine management orchard and chemical control orchard） in 2012.The results showed that 3 main species of thrips were found on apple trees,and they were Thrips palmi,T.flavidulus and Frankliniella occidentalis which accounted for 58.62% of the total,and it was the predominant species on apple trees.The second was the T.palmi,accounted for 37.93% of the total.The damage degree in different orchards was organic demonstration orchard routine management orchard chemical control orchard.In terms of the occurrence period,T.palmi had only 1 peak during late April to mid May;F.occidentalis had 2 peaks,one during late April to mid May and the other in the first half of July.The main damage period of thrips was from April to July.In August,with the temperature dropping,the thrips population was getting reduced significantly.