厩肥汁液或尿肥在保存过程中伴随着氨化过程的加剧,液体中铵盐分解,往往有大量的氮素挥发损失。多年来的研究表明:采用土壤、草灰、过磷酸钙、(艹褥)草等物质均有保肥作用,但各有利弊。从保肥效果上看:以土壤、草灰、过磷酸钙较好。但土壤保肥垫土量为尿量的三倍时,每头大牲畜每天要垫土60斤左右。目前在劳力上有一定困难,因之探索节约垫圈土的保肥方式是尿肥保肥中的重要工作。 试验在室内进行。采用冲积型沙壤土。该土全氮力0.116％,硝态氮2—4ppm。铵态氮微量,pH8.0,石灰含量5.3％。各次尿液含氮量在0.45％左右。土 Stable manure juice or urine in the preservation process is accompanied by aggravation of ammoniation process, the liquid ammonium salt decomposition, often have a lot of loss of nitrogen volatilization. Over the years the study shows that: the use of soil, grass ash, superphosphate, (mattress) grass and other substances have fattening effect, but each has its advantages and disadvantages. Effect of fertilizer from the point of view: the soil, straw ash, superphosphate better. However, the amount of paddy soils for soil conservation and manuring three times the volume of urine, each big livestock every day to about 60 kg mat soil. At present there are some difficulties in labor, because of the way to save gas washer soil fertilizer is an important work in fertilizer and fertilizer. Test in the room. Alluvial sandy loam. The soil total nitrogen 0.116%, nitrate nitrogen 2-4ppm. Ammonium nitrogen trace, pH8.0, lime content of 5.3%. Each urine nitrogen content of about 0.45%. earth