2Groenestein C M, Van Faassen H G. VolatiliZation of Ammonia,Nitrous Oxideand Nitrie Oxidein deep-litter Systems for Fattening Pigs [J].agric Engng Res,1996,65:269- 274.
6Groenestein eM, van Faassen HG. 1996. Volatilization of ammonia, nitrous oxide and nitric oxide in deep-letter systems for fattening pigs. Journal of Agricultural Engineering Research, 65: 269-274.
7Gruda N. 2008. The effect of wood fiber mulch on water retention, soil temperature and growth of vegetable plants. Journal of Sustainable Agriculture, 32: 629-643.
8Sommer SG, Danl P. 1999. Nutrient and carbon balance during the composting of deep litter. Journal of Agricultural Engineering Research, 74: 145-153.
