Studies on production of organic-inorganic compound fertilizer by utilizing the lees of grape wine

This paper reports a method for the production of organic-inorganic compound fertilizer by using the lees of grape wine，such as skin and pips of grape，as raw materia1．It includes the chemical disposal，aerobic compost and compound inorganic fertilizers N，P and K．In this fertilizer organic matter content is over 300g/kg and total content of N，P，K is over 250g／kg．Compared with other chemical compound fertilizer containing the same contents of N，P，K，the fertilizer can increase crop yield by 10％ ．improve crop quality significantly and ameliorate the fertilizer availability of soil．