化学、同步生化复合处理对玉米秸秆营养物质降解率的影响

Effect of chemical and biochemical synchronization treatment on breakdown rate of corn stalk

玉米Zea mays秸秆经11种化学、同步生化对应处理方法处理后,用尼龙袋法测定了干物质(DM)、粗蛋白(CP)、酸性洗涤纤维(ADF)在滩羊瘤胃内的降解率。结果表明,同步复合生化处理效果总体上优于化学复合处理,DM降解率最高(生化处理9)为74.25%,比化学处理组(化学复合处理7)降解率53.54%提高了22.47%;粗纤维(CF)降解率最高(生化处理11)为76.92%,比化学处理组(化学复合处理9)降解率65.57%提高了17.31%;ADF降解率最高(生化处理9)为75.12%,比化学处理组(化学复合处理3)降解率38.10%提高了1倍。经综合评价,同步生化复合处理9效果最优。同时说明,化学、生物同步处理对提高秸秆营养物质降解率具有明显效果。

Corn stalks were treated with 11 chemical and biochemical synchronization methods; the breakdown rates of DM, CP and ADF in Tan sheep rumen were measured by means of nylon cannula. The result showed that complex biochemical synchronization treatment was more effective than that of complex chemical treatment. The digestion rate （74.25%） of DM in biochemical synchronization trea,tment 9 was 22.47% more than that of chemical synchronization treatment 7 （53.54%）. The breokdown of CF was 76.92% in biochemical synchronization treatment 11, which was 17.31% higher than chemical synchronization treatment 9 （65.57%）. The highest degradation rate of ADF was 75.12% （biochemical synchronization treatment 9）, which doubled the best outcome of chemical synchronization （chemical synchronization treatment 3） by 38.10%. Comprehensive assessment indicated that biochemical synchronization treatment 9 was the most effective, and both chemical and biochemical synchronization treatments were effective in increasing digestion rate of nutrients of corn stalks.