不同K肥水平对各紫花苜蓿品种生物性状的影响  

Effect of K Fertilizer Application on the Biological Characters of Purple Flower Alfalfa

作　　者：王俊侠[1] 范惠菊[1] 

机构地区：[1]河北沧州职业技术学院,河北沧州061001

出　　处：《安徽农业科学》2008年第32期14195-14196,共2页Journal of Anhui Agricultural Sciences

基　　金：河北省博士基金(05547006D-2)

摘　　要：[目的]找出适合在沧州推广的紫花苜蓿品种和当地苜蓿种植中合适的钾肥用量,为钾肥的合理施用和紫花苜蓿品种的推广提供合理依据。[方法]采用钾肥施用量为0、100、200、300 kg/hm24个水平,14个紫花苜蓿品种作二因素随机区组设计,3次重复,测定鲜草重和茎叶比。[结果]阿尔岗金、中苜一号、王冠、劳博在该地表现较好,其产量均较高,茎叶比均较低,产量高草质好;钾肥施用量为200kg/hm2时综合效益最好。[结论]钾肥施用量的多少对苜蓿产草量有重要影响,一定范围内,随着钾肥施用量的增加,苜蓿产量逐渐增加。[Objective ] The theoretical foundation for the reasonable application of K fertilizer and the popularization of new purple flower alfalfa variety was supplied through the experiment. [ Method] Randomized complete block design was used with 4 levels （0, 100,200 and 300 kg/hm^2） K application amount and 14varieties with 3 repetitions. [ Result] Algonguin, Crown, Laobo and Chinese alfalfa No. 1 performed well on the high yield and low stem leaf ratio. The best efficiency was comr from the K application of 200 kg/hm^2. [Conclusion] The application amount of K-fertilizer greatly impacted on the alfalfa yield and in certain range, the increment of application amount of K-fertilizer promoted the alfalfa yield.

关 键 词：苜蓿 钾肥 品种 茎叶比 鲜草产量 

分 类 号：S542.4[农业科学—作物学]