CAJ | 학술논문

本研究的目的是对“中苎1号”和“中苎2号”苎麻的营养价值进行初步评价，为苎麻作牧草利用提供参考。试验结果表明，苎麻的营养品质优于黑麦草和象草，和苜蓿相近；80 cm收割高度下苎麻的叶、茎粗蛋白含量和叶茎比均显著高于100 cm和120 cm （ P＜0.05）的收割高度，叶、茎粗纤维含量则显著低于100 cm和120 cm （ P＜0.05），同时干物质产量和粗蛋白产量均显著高于60 cm （ P＜0.05），生长时间相对100 cm和120 cm分别缩短了8 d和13 d。此外，“中苎1号”在80 cm收割高度下的粗蛋白日增产速率显著高于其他收割高度（ P＜0.05）。综上可知，“中苎1号”和“中苎2号”可以做牧草开发利用。综合考虑干物质产量、营养品质、生产时间及成本，“中苎1号”和“中苎2号”在“二麻”高温期间整株收获作为反刍动物的饲草开发利用时，80 cm左右是最佳的收割高度。
본연구적목적시대“중저1호”화“중저2호”저마적영양개치진행초보평개，위저마작목초이용제공삼고。시험결과표명，저마적영양품질우우흑맥초화상초，화목숙상근；80 cm수할고도하저마적협、경조단백함량화협경비균현저고우100 cm화120 cm （ P＜0.05）적수할고도，협、경조섬유함량칙현저저우100 cm화120 cm （ P＜0.05），동시간물질산량화조단백산량균현저고우60 cm （ P＜0.05），생장시간상대100 cm화120 cm분별축단료8 d화13 d。차외，“중저1호”재80 cm수할고도하적조단백일증산속솔현저고우기타수할고도（ P＜0.05）。종상가지，“중저1호”화“중저2호”가이주목초개발이용。종합고필간물질산량、영양품질、생산시간급성본，“중저1호”화“중저2호”재“이마”고온기간정주수획작위반추동물적사초개발이용시，80 cm좌우시최가적수할고도。
The main purpose of this paper was to evaluate the nutritional value of two ramie varieties Zhongzhu No.1 and Zhongzhu No.2 and provide a reference for ramie as a forage crop.The results showed that the nutritional quality of ramie [ Boehmeria nivea ( L.) Gaud.] was better than that of pe-rennial ryegrass ( Lolium perenne L.) and Pennisetum purpureum Schum.Besides, the nutritional quality of ramie was comparable to that found in alfalfa ( Medicago sativa L.) .The crude protein content and leaf-stem ratio of ramie at 80 cm reaping height were significantly higher ( P<0.05 ) than 100 cm and 120 cm.The crude fiber content at 80 cm reaping height was significantly lower ( P<0.05 ) than 100 cm and 120 cm.DM yield and gross protein yield at 80 cm were obviously higher than 60 cm ( P<0.05 ) .The growth period at 80 cm height was 8 and 13 days less than 100 cm and 120 cm respectively , In addi-tion, the daily growth rate of crude protein of Zhongzhu No.1 at 80cm reaping height was significantly higher ( P<0.05 ) than other reaping heights.Based on the results , Zhongzhu No.1 and Zhongzhu No.2 could be used as forage crop , and in their second growth season , ramie should be reaped at about 80 cm height as ruminant feed.