不同刈割时期对紫花苜蓿和红豆草产量及营养价值的影响

发布时间：2019-04-27 09:48

【摘要】：不同生育期(营养期、现蕾期、开花期、盛花期、结荚期)选用品种(新牧1号、新牧2号、当地苜蓿、红豆草、高辉苜蓿)进行刈割,研究刈割时期对紫花苜蓿和红豆草产量及营养价值的影响。结果表明,新牧2号苜蓿开花期的鲜草产量和干草产量显著高于其他品种其他几个时期鲜草产量和干草产量(P0.05);牧草在营养期的粗蛋白质和粗灰分含量显著高于其他几个刈割时期(P0.05);牧草在盛花期的NFE含量显著高于其他几个刈割时期(P0.05);随着生育期由营养期延迟至结荚期,牧草的中性洗涤纤维、酸性洗涤纤维含量显著增加(P0.05),而牧草的相对饲用价值含量显著降低(P0.05);新牧1号、新牧2号、当地苜蓿、红豆草、高辉苜蓿5个品种的干物质、粗蛋白质、粗脂肪、粗纤维、粗灰分、中性洗涤纤维、酸性洗涤纤维、酸性洗涤木质素、酸不溶灰分、相对饲用价值无显著差异(P0.05)。牧草现蕾期的产量和营养价值优于其他几个时期,新牧2号的产量和营养价值优于其他几个品种。
[Abstract]:Varieties (Xinmu No. 1, Xinmu No. 2, local alfalfa, red bean grass, Gaohui alfalfa) were selected for cutting at different growth stages (vegetative stage, bud stage, flowering stage, full flowering stage, pod setting stage). The effects of cutting time on the yield and nutritional value of alfalfa and sage were studied. The results showed that the fresh grass yield and hay yield of Xinmu 2 alfalfa at flowering stage were significantly higher than those of other varieties at other stages (P0.05). The content of crude protein and crude ash in vegetative stage was significantly higher than that in other cutting stages (P0.05), and the content of NFE in full flowering stage was significantly higher than that in other cutting stages (P0.05), and the content of crude protein and ash in forage was significantly higher than that in other cutting stages (P0.05). The content of neutral detergent fiber (NDF) and acid detergent fiber (ACF) of forage increased significantly (P0.05), while the relative feed value of forage decreased significantly (P0.05) as the growth period was delayed from vegetative stage to pod setting stage. Xinmu 1, Xinmu 2, dry matter, crude protein, crude fat, crude fiber, crude ash, neutral detergent fiber, acid washing lignin, acid insoluble ash of 5 varieties of alfalfa, including local alfalfa, red bean grass, high-glow alfalfa, crude protein, crude fat, crude fiber, crude ash, neutral detergent fiber, acid washing lignin, acid insoluble ash. There was no significant difference in relative feeding value (P0.05). The yield and nutritional value of herbage in bud stage were better than those in other periods, and the yield and nutritional value of Xinmu No. 2 were better than those of other varieties.
【作者单位】：西北农林科技大学动物科技学院;
【基金】：基金项目国家牧草产业技术体系(CASR-35-01A) 国家燕麦产业技术体系(CARS-08-D1)
【分类号】：S541;S816

【相似文献】