鷄糞을 加工할 때 생기는 窒素의 損失을 줄이는 方法을 講究하기 爲하여 生鷄糞을 燐酸, 重過石, 過石으로 處理하여 3日間 35℃에서 腐熟乾燥하는 室內試驗을 實施하여 다음 結果를 얻었다. 1) 生鷄糞에 燐酸이나 重過石, 過石을 處理 腐熟시키므로서 암모니아의 揮散을 줄여서 無處理에서는 40∼60%만 保全할 수 있었던 鷄糞室素를 80∼90%까지 保全할 수 있었다. 2) 室素의 損失을 줄일 目的으로 施用하는 添加物은 鷄糞과 充分히 混合되어야 한다. 3) 腐熟鷄糞을 乾燥할 때 室素의 損失이 많다. 45∼65℃로 乾燥할 때 無處理에서는 70∼90%가 損失되고 燐酸, 重過石, 過石處理에서는 60∼80%가 消失되었다. 4) 미리 65℃로 높여 놓은 乾燥器에 腐熟鷄糞 試料를 넣어 말렸을 때는 漸次的으로 溫渡를 높였을(45∼65℃) 때 보다 窒素의 損失이 적었다.

Laboratory experiments of poultry manure incubated for three days at 35℃ were conducted to learn some informations on the relief of nitrogen loss during processing. Results obtained are as follows: 1) Blending phosphoric acid, triplesuperphosphate or superphosphate to poultry manure could reduce the volatilization of ammonia and saved nitrogen in the manure by 80 to 90 percent, though nonblending saved the nitrogen only by 40 to 60 percent during three days incubation. 2) The additives must be blended thoroughly to the manure to obtain the least loss of nitrogen during the incubation. 3) The severe loss of nitrogen was occurred from the drying process of fermented manure of both treatment, that is 60∼80 percent loss at the blended treatment with phosphoric acid, triplesuperphosphate or superphosphate, and 70∼90 percent loss at non-blended. 4) Drying the fermented manure under the fixed temperature of about 65℃ for three days saved more nitrogen than dried manure under the temperature gradually raised from the room temperature to about 45∼65℃ for three days.