發(fā)布時間：2019-02-22 14:15

【摘要】：借鑒青貯原理,將干玉米秸稈與水分含量較高的廢棄萵筍葉進行混貯,分析不同添加劑對二者混貯品質的影響。設置了對照組(CK)、德氏乳桿菌組(LD)、甲酸組(FA)、復合添加劑組(LD+FA)4個處理,每個處理3次重復,連續(xù)貯存50d,每間隔10d對干物質和木質纖維組分含量、發(fā)酵品質及微生物數量進行分析,比較篩選適宜的添加劑。結果表明,50d貯存期內,與CK組相比,FA組的干物質損失最小,且添加甲酸青貯后顯著降低了纖維素、半纖維素和酸性洗滌木質素、氨態(tài)氮/總氮含量和青貯pH(P0.05),乳酸含量顯著增加(P0.05),V-score評分表現(xiàn)良好;LD組的干物質損失、氨態(tài)氮/總氮含量顯著高于CK組(P0.05),青貯pH均高于4.2,V-score評分表現(xiàn)最差;LD+FA組在前30d的貯存品質較好,之后氨態(tài)氮/總氮含量顯著增加(P0.05),貯存品質變差。從延長貯存時間和提高貯存品質等角度考慮,甲酸可以作為干玉米秸稈與萵筍葉混合貯存的添加劑,但應用過程中需要注意成本問題。
[Abstract]:Using the principle of ensilage, the dry corn straw and the waste bamboo shoot leaf with higher water content were mixed and stored, and the effect of different additives on the quality of the mixture was analyzed. A control group (CK), a D-lactobacillus group (LD), a formic acid group (FA) and a compound additive group (LD + FA) were arranged for 4 treatment, each treatment was repeated for 3 times, the content of the dry matter and the wood fiber component, the fermentation quality and the number of microorganisms were analyzed for 10days per interval, and the appropriate additives are compared and screened. The results showed that in the storage period of 50d, the loss of dry matter in FA group was the least when compared with CK group, and the content of cellulose, hemicellulose and acid washing lignin, ammonia nitrogen/ total nitrogen content and ensilage pH (P0.05) were significantly reduced after addition of formic acid, and the lactic acid content was significantly increased (P0.05). The results showed that the content of dry matter in LD group was higher than that of CK (P0.05), and the pH of ensilage was higher than that of the control group (P <0.05). The storage quality of LD + FA group was better in the first 30d, and the content of N/ N in the ammonia was significantly increased (P0.05), and the storage quality was poor. Formic acid can be used as an additive for mixed storage of dry corn straw and lettuce leaf from the viewpoint of prolonging the storage time and improving the storage quality, but the application process needs to pay attention to the cost problem.
【作者單位】： 蘭州理工大學西部能源與環(huán)境研究中心;甘肅省生物質能與太陽能互補供能系統(tǒng)重點實驗室;蘭州理工大學生命科學與工程學院;
【基金】：國家自然科學基金(51366009,51666010) 國家高技術研究發(fā)展計劃(863)(2014AA052801) 甘肅省自然科學基金(1506RJYA106,1508RJYA097) 蘭州市科技計劃項目(2014-2-20)資助
【分類號】：S816.53

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