喷施聚天门冬氨酸对不同品种紫花苜蓿产量及品质的影响  

Effect of PASP on yield and quality of alfalfa

作　　者：张小燕[1] 马晖玲[1] 马政生[2] 

机构地区：[1]甘肃农业大学草业学院草业生态系统教育部重点实验室中-美草地畜牧业可持续研究中心,甘肃兰州730070 [2]西北大学化工学院,陕西西安710069

出　　处：《草原与草坪》2010年第6期40-46,共7页Grassland and Turf

基　　金：国家科技支撑计划"奶牛专项"子课题1"优质高产抗逆苜蓿和饲料作物新品种选育"子专题(2006BAD04A04-01-08)资助

摘　　要：采用叶面喷施的方法研究了聚天门冬氨酸(PASP)5个作用浓度20、40、60、801、00 mg/kg对3个紫花苜蓿品种产量及品质的影响。结果表明:喷施PASP对不同品种1年3茬次的产量和品质具有不同影响。3个紫花苜蓿品种年产量均以PASP为20 mg/kg处理最高,且都显著(P<0.05)高于对照;PASP浓度为20 mg/kg可以显著提高阿尔冈金和甘农3号的株高,PASP为40 mg/kg可以显著提高金皇后的株高;喷施PASP对紫花苜蓿营养物质含量的影响不同,PASP 60 mg/kg能显著提高阿尔冈金及甘农3号的粗蛋白、磷含量;PASP 40 mg/kg能显著提高阿尔冈金、甘农3号的粗脂肪及粗灰分含量;PASP 80 mg/kg处理能显著提高甘农3号的钾含量及金皇后的磷含量;对金皇后脂肪及灰分具有显著作用的处理是60 mg/kg。The effect of PASP application by surface spraying on yield and quality of three cultivars of alfalfa was studied. The results indicated that the PASP application could remarkably（P0.05） increase the hay yield of alfalfa at a proper application level.The hay yield of three cultivars reached the highest at the application rate of 20 mg/kg.PASP showed different influence on alfalfa height,Algonquin and Gannong No.3 reached the highest at 20 mg/kg while Golden Empress at 40 mg/kg.The contents of crude protein and P of Algonquin and Gannong No.3 reached the highest at 60 mg/kg.The crude fat and crude ash of Algonquin and Gannong No.3 could be significantly increased under 40 mg/kg of application rate.The K content of Gannong No.3 could be significantly increased at 80 mg/kg.The contents of crude fat and crude ash of Golden Empress reached the highest at 60 mg/kg.

关 键 词：紫花苜蓿 聚天门冬氨酸 干草产量 株高 品质 

分 类 号：S54[农业科学—作物学] S143.8