研究添加剂对2种含水率稻草青贮品质的影响，在常规水分（MC1）和低水分（MC2）稻草青贮中均设对照组（CON）和分别添加绿汁发酵液（FGJ）、葡萄糖（GLU）、纤维素酶（CEL）、木聚糖酶（XYL）、复合酶（纤维素酶＋木聚糖酶，MIX）共6个处理组，常温下贮存60 d开封，测定青贮发酵品质和化学成分。结果表明：①MC2青贮的pH、干物质回收率（DMR）和可溶性碳水化合物（WSC）含量极显著高于MC1青贮，乳酸（LA）、乙酸（AA）和氨态氮（AN）显著或极显著低于MC1青贮；②在MC1青贮中，较CON组，FGJ组、GLU组和CEL组的pH下降，XYL组之外4组的WSC增加，CEL组之外4组的AN下降，GLU组的气体损失率（GLR）降低。在MC2青贮中，较CON组，其他5组的pH下降，FGJ组和GLU组的DMR升高、WSC增加， FGJ组、GLU组和CEL组的AN下降。由此可见， MC2青贮的品质优于MC1青贮；在MC1青贮和MC2青贮中，5种添加剂均有显著效果，并以葡萄糖的添加效果最佳。%This experiment was conducted to study the effect of additives on quality of rice straw silage with conventional and low moisture ,which would provide theoretical basis for producing high quality of rice straw silage .Six treatment groups which added fermented green juice (FGJ) ,glucose (GLU) ,cellulose (CEL) ,xylanase (XYL) ,compound enzyme (CEL+ XYL ,MIX) respectively and control groups (CON) were set up with conventional moisture (MC1) and low moisture (MC2) of rice straw silage .Each treatment was repeated 3 times .The materials were ensiled at room temperature and opened 60 days later .The fermentation quality and the chemical composition were analyzed .The results showed : ① In the MC2 silages ,pH ,DMR (dry matter reclaim) and WSC (water soluble carbohydrate) extremely significantly increased (P<0.01) ,and LA (lactic acid) ,AA (acetic acid) and AN (ammonia nitrogen) significantly decreased comparing with the MC1 silages (P<0.05 ,P<0.01) .② In the MC1 silages ,pH of FGJ ,GLU and cellsignificantly decreased (P<0.05 ,P<0.01) ,WSC increased among those treatments except the XYL group (P<0.05 ,P<0.01) ,AN significantly decreased among those treatments except the cellgroup (P<0.01) ,GLR (gas loss rate) of GLU significantly decreased comparing with the CON group (P< 0.01) .In the MC2 silages ,pH of all other five additive treatments significantly decreased (P<0.01) ,DMR and WSC of FGJ and GLU increased (P<0.05 , P<0.01) ,AN of FGJ ,GLU and celldecreased comparing with the CON group (P< 0.05 , P<0.01) .The results showed that the MC2 silages had higher quality than the MC1 silages .In the MC1 silages and the MC2 silages ,all five additive treatments had significantly improve the quality of silages ,especially the addition of GLU had the better effect both in conventional and low moisture ensiling .
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