收刈时间对不同品种玉米秸秆营养成分和干物质降解率的影响  

Effects of the Harvesting Time on Nutrients and Degradabilities of Organic Matter in Corn Stalk

作　　者：赵丽华[1] 莫放[1] 余汝华[1] 张晓明[1] 陈瑶[1] 黄木家[1] 

机构地区：[1]中国农业大学动物营养国家重点实验室,北京100094

出　　处：《中国牛业科学》2007年第4期33-35,共3页China Cattle Science

基　　金："十五"国家科技攻关计划项目"饲料资源开发与产业化利用关键技术研究"。(项目编号:2004BA514A11-04)

摘　　要：大田试验种植4个早中熟玉米品种,包括农大108、高油298、冀丰58、郑单958,在生长期的92 d、96 d、100 d和104 d收刈秸秆,研究收刈时间对秸秆营养物质含量和干物质降解率的影响,试验结果表明,收刈时间明显影响玉米秸秆的粗蛋白质、纤维性物质含量,所选种的玉米品种秸秆蛋白质含量和干物质降解率在100 d达到峰值。Four different maize cultivars, Nongdal08, Gaoyoull5, Jifeng58, Zhengdan958, were chosen to study the effects of different harvested time （at 92 d, 96 d, 100 d, and 104 d of the growth period） on the nutrient content and the degradabilities of organic matter in corn stalk. The results indicated that there were significant effects on the content of crude protein, NDF and ADF, by different harvested time and different maize cultivars. The crude protein content and the degradabilities of organic matter in corn stalk of selected cultivars reached the peak value at 100 d of growth period.

关 键 词：玉米秸秆 收刈时间 粗蛋白质 有机物降解率 NDF 

分 类 号：S816.35[农业科学—饲料科学]