6GERALD K. Quality control and use of composed organic wasters as components of growing media in the Federal Republic of Germany [ J ]. Acta Harticultume, 1991,294:89 - 99.
7LOUIS R,JEAN C. Research on substrates:State of the art and need for the coming 10 years[J]. Acta Harticulturae, 2001,548:29 -42.