关键词: 演变, 演变

Abstract:

In order to study the safety of beta-cypermethrin, avermectin, emamectin benzoate, et al, 9 single or mixed micro-emulsion, the authors tested their environmental toxicity. Using semi-hydrostatic-type, oral exposure method, food intake method, contact exposure method to test the toxicity to fish, bird, honeybees, silkworm, respectivitly according to ‘The guidelines of chemical pesticides environmental safety evaluation’. On the toxicity to fish, 0.2% hypertonic emamectin benzoate, 3% acetamiprid and 20% avermectin. monosultap were evaluated as ‘low toxic class’ or ‘moderate toxic class’, others were ‘high toxic class’ or ‘hypertoxic class’; on the bird toxicity, 4.5% beta-cypermethrin was evaluated as ‘high toxic class’, others were ‘low toxic class’ or ‘moderate toxic class’; on the toxicity to honeybees, 0.2% hypertonic emamectin benzoate and 3% acetamiprid were evaluated as ‘low toxic class’ or ‘moderate toxic class’, others were ‘high toxic class’; on the toxicity to silkworm, all the pesticides were evaluated as ‘high toxic class’ or ‘hypertoxic class’. Shows that acetamiprid and low content emamectin benzoate behaved low toxicity to fish, bird, honeybees, silkworm, but pyrethroid insecticides, vavermectin and high content emamectin benzoate behaved high toxicity, so these insecticides should be far away from fish pond, bee yard and mulberry while applying.