【摘要】 以通草1号虉草为供试材料,采用施氮量(含N为0 kg/hm~2,46 kg/hm~2,92 kg/hm~2)和行距(30 cm,50cm,70 cm)二因素裂区试验设计,研究了施氮量与行距对抽穗期虉草产量和叶、茎、穗和植株中营养成分含量的影响.结果表明:随着施氮量和行距增加草产量呈增长趋势.叶、茎、穗中粗蛋白质、粗纤维、钙和磷含量呈随施氮量和行距的增加而升高趋势,无氮浸出物含量降低.A1B3组合虉草产量最高,A3B3组合各器官粗蛋白质含量最高.更多还原

【Abstract】 Reed canarygrass Tongcao No.1(Phalaris arundinacea.Tongcao No.1)was used as test material,two factors of Nitrogen application rate(containing N 0,46 and 92 kg/hm~2)and row spacing(30,50 and 70 cm)were designed,a feild complete split-plot experiment was conducted to study the effect of row spacing and nitrogen amounts on nutrient contents of yield and leaves,stems,ears and plant in reed canarygrass at heading stage. The results showed that yield of reed canarygrass increased with an increase of nitrogen amounts and row spacing. The contents of crude protein,crude fiber,calcium and phosphorus was increased with the increase of row spacing and nitrogen amounts in leaf,stems and ears and the content of nitrogen free extract decreased. There was the highest yield in A1B3(row spacing 30 cm,nitrogen fertilizer 92 kg/hm~2)combination of reed canarygrass and was the highest contents of crude protein in A3B3(row spacing 70 cm,nitrogen fertilizer 92 kg/hm~2).更多还原