磷化铝缓释熏蒸防治小麦中的螨类

STUDY ON PHOSPHINE SLOW RELEASING FUMIGATION AGAINST MITES ON STORED WHEAT

用３．３ｇ／ｍ~３的磷化铝剂量，塑料薄膜５面密闭缓释熏蒸包装小麦，保持有效 杀螨浓度时间长，ＣＴ值大，完全消灭了小麦中的跗蠊螨Ｂ．ｔａｒｓａｌｉ ｓ （Ｂｅｒｌｅｓｅ）、马六甲肉 食螨 Ｃ，ｍａｌａｃｃｅｎｓｉｓ Ｏｕｄｅｍａｎｓ、特氏肉食螨 Ｃ．ｔｒｏｕｅｓｓａｒｔｉ Ｏｕｄ，以及人为埋入粮堆供试 的热带食酪螨 Ｔ． ｔｒｏｐｉｃｕｓ Ｒｏｂｅｒｓｔｏｍ、害嗜鳞螨 Ｌ．ｄｅｓｔｒｕｃｔｏｒ（Ｓｃｈｒａｎｋ）、棉兰皱皮螨 Ｓ，ｍｅａｎｅｎｓｉｓ Ｏｕｄｅｍａｎｓ、棕脊足螨Ｇ．ｆｕｓｃａ（Ｏｕｄｅｍａｎｓ）、普通肉食螨 Ｃ．ｅｒｕｄｉｔｕｓ（Ｓ．）、 马六甲肉食螨、特氏肉食螨等８种螨。在同一条件下，用常规埋藏施药法，达不到这样 好的效果。证明磷化铝缓释熏蒸是行之有效的防治仓储小麦中螨类的好方法。

Phosphine slow releasing fumigation was conducted by means of wrapping aluminium phosphide tablets with polyethylene film at the application rate of 3.39/m^3 in a plastic sheeted wheat stack for long term exposure. The infest B. tarsalis (Berlese), C. malaccensis Oudemans, C. trouessarti Oud. and tested species of T. tropicus Roberstom,,L destructor (Schrank), S. medanensis Oudemans, G. fusca (Oudemans ), C. eruditus (S. ), C. malaccensis, C. trouessarti were completely killed. But at the same conditions the effectiveness of conventional fumigation was not as high as slow releasing fumigation. The effective or product of Phosphine against common stored grain mites should be amounted to 264g·hr,m^3.