The Experimental Study Of Straw Bale Compressing Characteristics And Fermentation Mechanism

Recently,with the fast development of livestock,silage has been paid great importance by all the countries all over the world and almost every country are in great demand of high-quality feed.Due to its advantage of convenience and cheapness,silage made of corn stalks attracts people's attention.Most of the countries,especially countries with high-developed animal husbandry have made it the most significant method to develop livestock, then, research and promote it.In this experiment,taking traditional cellar-storage and whole plant corn compression bundling silage as the main objects of study.And study the bale-wrapped straw's quality to get the compaction range of the fresh corn stover silage.Through comparative analysis the process of silage to get the optimal importing the compression ratio.In the observation of the microbial activity,to find the features of microbial in compress bundling silage fermentation process.Providing a theoretical basis for the future experiment.As the experiment shows:1.Compared with traditional cellaring,standardized circular bundle with diameter 400～600mm,length 700～900mm,apart from letting out the majority of air in the stem,the compressed sap flows to and fills in the crack,forming a relatively ideal oxygen-free environment in general. and through this way the aerobic bacterial like mould and putrefying bacteria is controlled effectively.The comparison of two silage modes in silage prosesses and fermentation results shows that the compression of whole plant corn compression bundling silage can achieve satisfactory kept the original purpose of nutrition straw.2.The process of ensiling can be categorized into three stages generally,namely the pre-fermentation stage,acidification stage and shelf stage.The temperature should be adjusted to around 20℃.The temperature variation is mainly affected by external temperature and fermentation temperature stage,the initial temperature of severe importing silage is 28.13℃,with the fermentation going ahead,the temperature rises rapidly to 33.89℃in the pre-fermentation stage,the temperature in the first few days of acidification stage is around 33.89℃,then descends slowly,the temperature in shelf stage keeps stablely in 27.32±0.35℃, and established the relationship between silage time and fermentation temperature,compared with traditional caches,the fermentation temperature is lower,which is esay to silage long-term storage.3.The silage fermentation mainly based on lactobacillus activities,the experiment shows that proper compression bundling ratio can form a microbial activity environment taking lactobacillus as advantage bacterium group, making good silage fermentation.