稻巢螟是水稻害虫之一,近几年来发生量有明显的增加。一九七三年至一九七五年,我们做了田间调查与观察,又在室内进行饲养观察。稻巢螟在我省从南到北的稻区均有分布。以福州市郊本院稻田观察,每年发生3～4代,各代螟蛾灯下出现高峰期是:第一代五月下旬至六月上旬,第二代七月中旬至八月上旬,第三代九月下旬。各种虫态历期参见下表. Rice borers is one of the pests of rice, the occurrence of significant increase in recent years. From 1973 to 1975, we conducted field surveys and observations and conducted indoor rearing observations. Rice nest borer in our province from south to north of rice are distributed. Fuzhou suburb of the hospital paddy field observation, occurs 3 to 4 generations a year, the generation of the moth lamp appears under the peak: the first generation of late May to early June, the second generation of mid July to early August, the third In late September. See the table below for the various worm stages.