不同基因型玉米吸钾特性和耐低钾机理研究  

Study on the Characteristic of Potassium Absorption and Low Potassium Endurance Mechanism for Different Genotypes Maize

作　　者：吕福堂[1] 张秀省[1] 

机构地区：[1]聊城大学农学院,山东聊城252000

出　　处：《玉米科学》2010年第1期61-65,共5页Journal of Maize Sciences

基　　金：山东省自然基金项目(Y2006E02)

摘　　要：通过低钾土壤钾素耗竭实验、盆栽土培实验系统地对12个不同基因型玉米进行了吸钾特性研究。幼苗耗竭实验结果表明:农大86吸钾能力最强,钾积累量最大;甜玉米吸钾能力弱,钾积累量少;吸钾能力强的基因型吸收矿物钾的比例也大。土培试验结果表明:在低钾土壤条件下,农大86吸钾能力强,甜玉米和聊玉18钾素利用效率高;在高钾条件下,登海9号增产率大,钾肥利用率高。钠对钾替代作用的研究表明,不同基因型玉米钾效率虽然不同,但对钠的吸收差异不显著。不同基因型玉米无论高钾还是低钾条件,对钠的吸收没有明显的差异,钾高效、耐低钾基因型玉米不存在钠、钾替代现象。This article studied 12 different genotypes maize systemically by seedling depletion and potted plant,soil culture experiment with low Potassium in soil.The results were that seedling depletion experiment showed Nong-da86 was best in absorbing and accumulating Potassium and sweet corn was the worst.In soil seedling depletion ex-periment,the ratio of absorbing mineral Potassium was highest,the next slow-release.Potassium and the lowest was available Potassium.Soil culture experiment showed that Nongda86 havi...

关 键 词：玉米 基因型 吸钾特性 耐低钾机理 

分 类 号：S51[农业科学—作物学]