我订阅贵刊2年。1992年承包1亩地，投资3万多元建起了本地青蛙养殖场，但亩产只有1000公斤，产值仅3万多元。去年我参考《农村新技术》总第141期的《青蛙高密度养殖法》．亩产达2100公斤，以每公斤44无销给蛙贩，还销售了3万多元的蛙儿今年总收入12万元以上。高密度养蛙收入12 I subscribe your edition for 2 years. In 1992 contracted 1 mu, invested more than 30,000 yuan to set up a local frog farms, but only 1000 kg per mu, output value is only 30,000 yuan. Last year, I referred to the “Frog High-density Breeding Law” of the 141st issue of “New Rural Technologies”. Mu yield of 2100 kg, 44 sales per kg to the frogs, but also sold more than 30,000 frogs this year, the total income of 120,000 yuan or more. High-density frog income 12