Effect of comminution size on lignocellulose degradation characteristics of tomato and pepper straw compost
In order to explore the technological parameters of aerobic composting of eggplant vegetable straw in nearby vegetable fields,the effects of two comminution size(2-5 cm by grinding and 1-2 cm by cutting)on the lignocellulose degradation and ripening quality of tomato,pepper and their mixed straw compost were studied.The results showed that the degradation rate of lignocellulose components in the composting process of tomato,pepper and their mixed straw was in the order of hemicellulose＞cellulose＞lignin.The big particle size treatment A reduced the initial lignocellulose mass fraction of compost,and accelerated the degradation of cellulose and hemicellulose in the later stage of composting.The small particle size treatment B increased the compost temperature and promoted the degradation of lignin.Redundancy analysis showed that the degradation of cellulose and hemicellulose was the key factor to promote the degradation of total carbon.The initial total nitrogen,total phosphorus,total potassium,and humic acid contents of the three kinds of straws in treatment A were significantly higher than those in treatment B,and the total nutrient content(8.03％)and humic acid content(12.15％)in treatment A were still significantly higher than those in treatment B(6.88％and 9.44％)at the end of composting.In production,the eggplant vegetable straw with a particle size of 2-5 cm or unit weight of 0.3 g/cm3 could be chosen to compost in vegetable producing areas,which helped to degrade lignocellulose and improve the quality of composting.
comminution sizetomato and pepper strawcompostlignocellulose
万方数据
维普
