不同干燥方法对新疆小芦苇不同生育期失重率及营养成分的影响  

Effects of Different Drying Ways on Weightlessness Rate and Nutrient Levels of Phragmites australis in Different Growth Stages

作　　者：赵光伟[1] 艾尼瓦尔.艾山[1] 于山江[1] 

机构地区：[1]新疆农业大学动物营养实验室,乌鲁木齐830052

出　　处：《新疆农业大学学报》2008年第2期33-38,共6页Journal of Xinjiang Agricultural University

摘　　要：以新疆小芦苇为实验对象，系统探索了不同干燥方法（自然荫干、压裂茎杆荫千、自然晒干、压裂茎杆晒干和压裂茎杆翻晒）对其不同生育期（抽穗期、开花期、结实期、枯黄期）失重率和营养成分的影响。结果表明：①在各个时期采用不同干燥方法，其失重率均以第1天最高，达到全干燥期的50％～90％，以后几天呈现缓慢下降的趋势。5种干燥方法在4个时期里第1天的平均失重率分别为23．91％，28．28％，32．72％，37．87％和39．72％。②从4个生育期里5种干燥方法的平均营养价值来看，粗蛋白质的含量以压裂茎杆晒干最高，达到了8．32％；中性洗涤纤维（NDF）以压裂茎杆晒干的最低为77．57％；酸性洗涤纤维（ADF）的含量相差不大，都在53．0％左右。由此得出：采用5种干燥方法，每个生育期的第1天都以压裂茎杆翻晒的失重率最高，自然荫干的失重率最低，二者间相差13％～22％。结合营养成分来看，以压裂茎杆晒干的干燥方法为最佳。This study was conducted to investigate the effects of different drying ways （natural shade dry, natural shade dry of fracturing stem, natural seasoning, natural seasoning of fracturing stem, turned dry of fracturing stem. ）on the weightlessness rate and nutrient levels of Xinjiang Small Reed in different growth stages（heading stage,anthesis stage,fruition stage,scorch stage）. The results showed that： （1） In each period, the first day＇s weightlessness rate was fairly maximum regardless of using different drying ways, which reached 50%-90% of the whole dry period,from the following day it had a slow downward trend. The average weightlessness rate of five-drying methods in the first day of four stages were 23. 91%, 28.28%, 32.72%, 37.87%, 39.72% respectively. （2）Therefore based on average nutrition value of five drying methods in four growth periods, the crude protein content of the natural shade dry of fracturing stem was the hightest,it reached 8.32% ,the neutral cleaning fiber of natural shade dry of fracturing stem was the lowest （77.5%）,it had no great difference （about 53.0%）,compared with the content of acidic cleaning fiber. The conclusion was drawn that the weightlessness rate of fracturing stem of natural seasoning was the highest in the 1st day of each growth period. The weightlessness rate of natural shade dry was the lowest,their difference was 13% and 22%. Based on nutrition content,the drying method of fracturing stem of natural seasoning was the best.

关 键 词：新疆小芦苇 失重率 干燥方法 营养成分 生育期 

分 类 号：S816.9[农业科学—饲料科学]