滴施不同比例的K_2SO_4/KCl对马铃薯生长的影响  

Effect of Different Rate of K_2SO_4/KCl on Growth of Potato under Fertigation

作　　者：邓兰生[1] 涂攀峰[1] 齐庆振[1] 张承林[1] 龚林[1] 胡克纬[1] 

机构地区：[1]华南农业大学资源环境学院,广东广州510642

出　　处：《安徽农业科学》2011年第1期166-168,共3页Journal of Anhui Agricultural Sciences

基　　金：广东省教育部产学研结合项目(2009B090300332);广东省科技计划项目(2009B020302003)

摘　　要：[目的]为马铃薯生产中高效合理利用钾肥提供理论依据。[方法]在盆栽试验条件下,通过滴灌施肥系统滴施钾肥,探讨不同比例的K2SO4/KCl对马铃薯生长、产量和品质的影响。[结果]在试验条件下,滴施K2SO4和滴施K2SO4/KCl比例为1∶1处理有利于马铃薯植株生物量的积累;滴施KCl处理和滴施K2SO4/KCl比例为1∶1处理马铃薯块茎产量显著高于其他3个处理马铃薯块茎产量,比滴施K2SO4处理增产10.1%～13.6%;滴施KCl有利于马铃薯块茎对钾的累积,而滴施K2SO4更有利于提高马铃薯的淀粉含量。[结论]在马铃薯生产中,滴施KCl或在滴施KCl时配施一定比例的K2SO4有较好的增产作用。[Objective]The study aimed to provide the theoretical basis for high efficiency and reasonable using potassium fertilizers on potato. [Method]Pot experiments were carried out to evaluate the effects of supplying different rate of K2SO4/KCl fertilizers under fertigation on the growth,tubers yield and quality of potato. [Result]Under these experiments conditions,fertigation of K2SO4 fertilizer and the rate of K2SO4/KCl fertilizer was 1∶1 could significantly increase the biomasses of potato.Tuber yield of KCl fertilizer and the rate of K2SO4/KCl fertilizer was 1∶1 were higher than the other three treatments,increased 10.1%-13.6% comparing to K2SO4 fertilizer treatment;KCl fertilizer treatment could improve K concentration in potato tuber,however K2SO4 fertilizer application could enhance the starch content of potato. [Conclusion]The yield increasing effect was better when the potassium fertilizer was KCl or some rate of K2SO4/KCl fertilizer.

关 键 词：马铃薯 滴灌施肥 K2SO4/KCl比例 产量 品质 

分 类 号：S532[农业科学—作物学] S275.6