论文部分内容阅读
１９９８年４～９月在华北农牧交错带的承德地区鱼儿山牧场进行了不同播量、施氮量和不同刈割期对燕麦＋箭豌豆混播人工草地牧草产量和品质影响的研究。结果表明，不同播种比例间的牧草产量除第三刈割期外差异显著（Ｐ＜０．０５）；不同播种比例间粗蛋白质、ＮＤＦ含量差异显著（Ｐ＜０．０５），ＡＤＦ含量差异不显著（Ｐ＞０．０５）。粗蛋白质含量与箭豌豆播种比例呈正相关（ｒ＝０．８９）。在土壤不缺乏氮素的情况下，施氮肥对牧草产量、品质影响不明显，但高施氮水平较低施氮水平牧草产量、粗蛋白质含量增加，而ＮＤＦ、ＡＤＦ含量下降。燕麦与箭豌豆混播最佳刈割期为燕麦乳熟末期至蜡熟期，箭豌豆下部豆荚全部充满时期；播种比例以燕麦５０％＋箭豌豆５０％最好，产草量、粗蛋白质含量及其产量都较高，而ＮＤＦ、ＡＤＦ含量较低，便于调制优质干草。
From April to September 1998, the effects of different sowing rates, nitrogen rates and different cutting stages on the yield and quality of forage grass mixed with oat and arrowhead pea mixed artificial grassland were studied in Yuer Shan Mountain pasture in the ecotone between agriculture and animal husbandry in North China. The results showed that there was significant difference (P <0.05) in forage yield between different sowing rates except for the third mowing period (P <0.05). The contents of crude protein and NDF were significantly different among different seeding rates (P <0.05) Significant (P> 0.05). The crude protein content was positively correlated with the sowing percentage of arrowhead pea (r = 0.89). In the case of no nitrogen deficiency in the soil, the effect of nitrogen fertilizer on forage yield and quality was insignificant, but the yield of forage grass with high nitrogen application rate and crude protein content increased while the content of NDF and ADF decreased. Oats and arrowhead peas mixed sowing the best cutting period for the oat milky ripening to wax maturity, the arrow pod peas lower part of the pods full period; sowing ratio of 50% + arrowhead pea 50% is best, the amount of grass, coarse Protein content and yield are higher, while NDF, ADF content is lower, easy to prepare high-quality hay.