Japanese investigators have noted that methamidophos is banned in their country, making it unlikely that the contamination took place there. 日方指出日本禁用甲胺磷，因此污染不大可能在日本发生。
The effects of Methamidophos and Shachongshuang on the predation function of natural enemygroup were evaluated with function method. 将稻田各类捕食性天敌作为一集团，运用功能法评价了甲胺磷和杀虫双对该集团捕食功能的影响。
