Abstract: The experiment was one of the systematincally studied at Shennei alfalfa TrialArea, Wudi County, Shandong province.The first-cut alfalfa was harvested at full blcom period.Itwas baled at various moisture contents (from 30 to 8%).The influence of rainfall on alfalfawholoplant, stem and leaf .was studied and the differences between traditional baling and highmoisture baling on CP, yield and DM yield were compared.The results are shown as followed: 1.With the reduced moisture content, the ratio of stem to leaf increased significantly(P<0.01), aswell as the loss rate of leaf.CP dropped and NDF and ADF rose dramatically (P< 0.01).There isno difference in ash content.2.Rainfall had a great influence on hay making.CP of raindrenchedhay was lower significantly than that of nonrain-drenched hay while NDF and ADF of the formerwas much higher than the latter one at the almost same moisture level.However, CP, NDF andADF of the rain-drenched leaf had no significant difference with those of nonrain-drenched leaf (P>0.05).Neither did the composition of the both stems(P > 0.05).3.The yield of hay baled athigh moisture was 1O7kg/mu more than that of traditional baled hay, dry matter was 44- 9kg/muhigher and crude protein was 12.7kg/mu higher.

Key words: Alfalfa hay, Baling at high moisture, Hay quality, Yield

摘要： 该试验于1996年5～6月在山东省无棣县神内农牧结合示范中心苜蓿试验区进行。头茬苜蓿于盛花期收割,研究高、低含水量(从30%降到8%左右)条件下打捆对产草量和粗蛋白质(CP)产量的影响。研究雨淋对苜蓿干草整株和茎、叶的影响。结果表明。①随着打捆前含水量的逐渐下降,茎叶比显著增加(P<0.01),叶片损失率增大,其茎叶比与打扫前干物质的含量呈一元非线性相关,相关方程Y＝3.5102X^4.963+1.05。干草的CP含量显著降低(P<0.01),NDF、ADF含量显著上升(P<0.01),灰分含量变化不显著。②雨淋对苜蓿干草营养成分的影响很大,在相同含水量的情况下,雨淋干草整株的CP含量低于未淋干草(P<0.01),而前者的NDF、ADF含量又显著高于后者(P<0.01)。但雨淋干草茎、叶的CP、NDF、ADF含量与未淋者相近似,其间的差异均不显著(P>0.05)。③高水分打捆比传统的低水分打捆每亩产草量高107kg,于物质产量高44.9kg,粗蛋白产量高12.7kg

关键词: 苜蓿干草, 高水分打捆, 干草质量, 产草量