Composting of organic fertilizer equipment Henan Viet organic fertilizer equipment companies compost maturity is good or bad, is to identify a comprehensive index of quality compost. According to their color, odor, hardness straw, compost leachate, compost volume, N ratio and to determine the coefficient of detritus. (1) the smell from the color, the maturity of compost straw brown or dark brown, with black juice, with ammonia odor, fast testing with ammonium reagent, a significant increase in its ammonium content; (2) the hardness of straw by hand grip compost, warm and soft and flexible; dry very brittle, easily broken, organic matter loss of elasticity; (3) compost leachate, take maturity compost, add water stirring (fertilizer ratio of 1: 5-10), place 3-5 minutes , pale yellow leaching solution; (4) compost volume, than just stack shrink 1 / 2-2 / 3; (5) N ratio, is generally 20-30: 1; (6) humification coefficient of 30 about%. Have a good market feedback. . . 

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