氮磷钾配施对金钗石斛幼苗生长的影响  

Effect of Different N,P and K Combination on Growth of DendrobiumnobileSeedlings

作　　者：薛敏[1,2] 杨继勇 但仕勇 张崇玉[1] 廖晓康 廖方华 邓贤芬 

机构地区：[1]贵州大学农学院,贵州贵阳550025 [2]铜仁市土肥站,贵州铜仁554300 [3]赤水市信天中药产业开发有限公司,贵州赤水564700

出　　处：《贵州农业科学》2014年第11期166-169,175,共5页Guizhou Agricultural Sciences

基　　金：赤水石斛产业科技合作项目"金钗石斛专用肥的研制与施肥技术研究"[赤中药科合(2011)3]

摘　　要：为探明金钗石斛高产栽培的氮磷钾最佳配方,以金钗石斛幼苗为材料,采用田间试验研究不同氮磷钾配比施肥对金钗石斛幼苗生长的影响。结果表明:不同处理对金钗石斛幼苗生长效果不同,其中,以施用尿素10.87kg/667m2+过磷酸钙31.25kg/667m2+硫酸钾10.00kg/667m2效果最好,其药用部位(茎)的生长量为1.74g/株,较CK增加5.45%,微量元素铜、锌、铁和锰含量分别较CK增加46.24%、50.80%、69.35%和25.70%,药用成分茎多糖和石斛碱分别较CK增加42.36%和46.67%。合适的氮磷钾配比能够明显促进金钗石斛幼苗产量和品质的提高。The effect of different N, P and K combination on growth of D. nobile seedlings was studied by a field test to find out the optimum N, P and K combination for high-yield cultivation of D. nobile. The results showed that the stem growth, Cu content, Zn content, Fe content, Mn content, polysaccharide content and dendrobine content in stems of D. nobile seedlings applied by the optimum N, P and K combination of 10. 87 kg/667m^2 urea ＋31. 25 kg/667m^2 calcium superphosphate ＋10. 00 kg/667m^2 potassium chlorate are 5.45%, 46.24%, 50.80%, 69.35%, 25.70%, 42.36% and 46.67% higher than CK respectively. In conclusion, the rational N, P and K ratio can increase yield and quality of D. nobile seedlings significantly.

关 键 词：金钗石斛 氮 磷 钾 幼苗生长 

分 类 号：S567.943.5[农业科学—中草药栽培]