高温高湿条件下意大利黑麦草青贮技术研究

Research on ensiling technology of Italian ryegrass in conditions of high temperature and humidity

研究以水田冬闲期栽培的意大利黑麦草(Lolium multiflorum)为材料,结合常规的青贮方法进行了小规模控制实验,试验设计了隔水(将青贮过程中产生的渗出液排出)和不隔水,以及不同添加物的青贮处理。青贮结束后,对青贮黑麦草的品质和营养价值进行评定,探讨不同处理对黑麦草青贮的作用效果,以及南方高温高湿条件下青贮黑麦草的合理方法和最佳条件。结果发现,对黑麦草进行隔水添加乳酸的青贮处理从感观评定、pH值和营养成分的分析结果来看,都在一定程度上优于其他处理,由此可以认为隔水添加乳酸的处理相对实现了较稳定和较优质的青贮。

We carried out a small scale control experiment by using the Italian ryegrass （Lolium multiflorum L.） planted in winterpaddy-field as research material, and combining conventional ensiling methods. We designed the treatments of separating water （eliminating the leachate produced in ensiling process） or non-separating water, and adding different kinds of additives in the process of ensiling. After ensiling, we evaluated the quality and nutritive value of ensiled Italian ryegrass, investigated the effects of different treatments on the ensiling of Italian ryegrass, and discussed the reasonable methods and optimum conditions for ensiling Italian ryegrass under conditions of high temperature and humidity climate in southern China. The results of sense organ, pH value and nutritional ingredient showed that the treatment of separating water and adding lactic acid, to some extend, was preferable, as compared to other treatments, therefore it can make stable and high quality silage.