杨蕾　邵凌云

摘  要：稻小潜叶蝇在辽宁省各地稻田均见发生。田块低洼，周围为荒地、沼泽，禾本科杂草丰度较大的稻田发生较重；弯穗型品种较直立穗品种受害重。稻小潜叶蝇年发生4～5代，以第2代于水稻返青分蘖期发生为害水稻为主。登记药剂匮乏，以潜叶蝇、斑潜蝇登记药和防治返青分蘖期其他害虫的稻田常用药剂进行田间药效试验，采用育秧播种前拌种、移栽前苗床施药带药移栽和本田返青期全田施药3种处理方式施药，其中，苗床施药带药移栽方式最为经济有效。考虑到兼治其他害虫，农药品种以呋虫胺和氯虫苯甲酰胺为最优，防治效果为87.12%～91.76%，对稻水象甲等害虫的兼治效果较好。

关键词：稻小潜叶蝇；发生特点；化学防控技术

Occurrence Characteristic of Rice Leaf Miner， Hydrellia Sinica and Its Chemical Control Technique in Liaoning Province

YANG Lei ， SHAO Ling-yun

（Institute of Plant Protection， Liaoning Academy of Agricultural Sciences， Shenyang 110161， China）

Abstract： Hydrellia sinica was found in rice fields in Liaoning Province. The field is low， surrounded by wasteland or swamp， and the rice field with higher grass weed abundance is heavier. The bent panicle varieties suffered more than the upright panicle varieties. Rice leaf miner occurs in 4 to 5 generations， and the second generation mainly occurs at the tillering stage of rice. Due to the shortage of registered agents， the field efficacy test was carried out with registered agents of leaf miner and Maculata fly and other common agents used to control other pests at tillering stage. Three treatment methods were applied： seed dressing before seeding， bed with medicine transplanting before transplanting， and the whole field with medicine at replanting stage. Among them， bed with medicine transplanting was the most economical and effective. Considering other pests， the best pesticide varieties were dinotefuran and chlorobenzamide， the control effect was 87.12%～91.76%， and the control effect was better on rice water weevil and other pests.

Key words： Rice leaf miner; Occurrence characteristics; Chemical control technology

稻小潛叶蝇Hydrelliaspp.是水稻常见次要害虫，全国各地稻田均见发生，在辽宁省局部地区的部分稻田一些年份造成较大危害[1，2]。不同稻区稻小潜叶蝇的种类与生物学有见报道[2～8]，以化学防控为主的防控技术亦见报道[2，4，5，7～9]。但查阅中国农药信息网，其登记防控农药匮乏。本研究通过在辽宁多地多年观测，确认了种类，总结了稻小潜叶蝇在本省的发生特点；通过2 a田间试验，规范出较为科学的化学防控技术。

1  材料与方法

1.1  种类确认

2018年～2019年6月上中旬自辽宁多地田间采集带有潜叶蝇的幼虫或蛹的被害稻叶，带回室内，置于大烧杯中，棉球浸水挤水部分保湿，羽化出成虫后镜检鉴定种类。

1.2  发生特点调查

2018年～2021年5月下旬～6月下旬在辽宁多地调查。……