Abstract: In rice-frog symbiosis system, the anti-insect effect of frog can not only improve the rice quality but also increase the profit of frog raising. Most frog released in this system is usually small with single weight less than 100 g. Experiments were conducted to explore the influences of frog weight on anti-insect effect and raising profit. The results showed that released with single frog weight of 75 g can reach the profit level as that of the single frog weight of 100 g.

Key words: rice-frog symbiosis, anti-insect , effect, economic , benefit

摘要： 稻蛙共育是一种新的生态稻作模式，高产高效，但在青蛙繁育过程中，由于个体差异，造成稻田可套养时单体质量低于100 g的青蛙数量较多。针对这一情况，笔者对稻田放养单体质量低于100 g青蛙对治虫、养殖效益的影响开展了对比试验。结果表明，稻蛙共育中采用单体质量75g的青蛙放养是可行的，能基本达到100 g单体质量青蛙的放养效果。

关键词: 稻蛙共育, 治虫效果, 经济效益