关中地区高产紫花苜蓿产量研究  

Study on the Yield of High-yielding Alfalfa Variety in Guanzhong Region

作　　者：贾红勋[1] 呼天明[1] 景艳[1] 杨培志[1] 郑红梅[1] 

机构地区：[1]西北农林科技大学动物科技学院,陕西杨凌712100

出　　处：《安徽农业科学》2007年第9期2629-2630,共2页Journal of Anhui Agricultural Sciences

基　　金：国家"十五"科技攻关计划奶业重大专项(2002BA518A17);中美抗旱耐盐苜蓿基因定位及其转入的合作研究(2006DFA33630)

摘　　要：自2002年起连续5年对关中地区7个高产紫花苜蓿品种的产量指标进行研究。结果表明,7个高产品种在关中地区生长良好,5年平均干草产量显著高于当地对照品种,其中“放牧者”最高,达27243 kg/hm2,比CK高65.15%。各品种年际间产量差异显著(P<0.05),最高产量出现在第3年,最佳利用年限为4年。累积株高与产量呈现极显著正相关(P<0.01),可以用来估产。7个品种再生性比“关中”好,应加强后茬管理,以获得更高牧草产量。Yield characteristics of 7 high-yielding alfalfa varieties and native variety Guanzhong （CK） were evaluated from 2002 to 2006 in Guanzhong Region, Shaanxi province. The results showed that 7 varieties grew well in Guanzhong Region and had higher yield than native variety. Among them, Haygrazer had the highest average yield （27 243 kg/hm^2） and was 65.15% higher than Guanzhong.The hay yields of each alfalfa variety in different years were significantly different （P 〈 0.05） .The highest yield occurred in the third year and the best utilization years were four years.Total height per year had significantly positive correlation with the hay yield （ P 〈 0.01 ）, which can be used to estimate the yield. 7 alfalfa varieties had better regeneration than Guanzhang.

关 键 词：高产紫花苜蓿 干草产量 株高 关中地区 

分 类 号：S541.9[农业科学—作物学]