琯溪蜜柚蓟马发生为害规律及药剂防效研究

Study on the occurrence and control of thrips in Guanxi pomelo in southern Fujian

对福建南部地区琯溪蜜柚果园蓟马发生情况开展调查,并进行了药剂防治试验。结果表明,福建南部地区琯溪蜜柚上的蓟马有黄胸蓟马、茶黄蓟马、稻管蓟马、西花蓟马4个种类,其中黄胸蓟马为优势种群,占96.7%。蓟马主要活动高峰期在3月中旬到5月中旬,不同品种琯溪蜜柚树上蓟马的种群动态变化情况没有明显差异。吡虫啉和阿维·氯苯酰喷涂树干的防治持效期较长,15 d后的校正防效为71.4%和60.4%;5种复配药剂对蓟马都有较好的防效。

The occurrence of thrips in Guanxi pomelo orchards in southern Fujian was investigated,and chemical control experiments were conducted.The results showed that four species of thrips,including Thrips hawaiiensis(Morgan),Scirtothrips dorsalis(Hood),Haplothrips aculeatus(Fabrieicus),and Frankliniella occidentalis(Pergande),were found on Guanxi pomelo in southern Fujian.Thrips hawaiiensis(Morgan)was the dominant population,accounting for 96.7%.Thrips activity peaked from mid-March to mid-May,and there was no significant difference in population dynamics of thrips among different varieties of Guanxi pomelo plants.Imidacloprid and abamectin and chlorantraniliprole complex applied on trunks had longer control durations than other chemicals,with a corrected control effect of 71.4%and 60.4%after 15 days of the application,respectively.The preventive effects of all five compounding agents on thrips were evident.