氮磷钾配施对桔梗产量的影响  

Effect of N,P and K Combined Fertilization on Yield of Platycodon grandiflorus

作　　者：王小仲 马艳 

机构地区：[1]贵州省关岭县农业局质检站,贵州关岭561300 [2]贵州省关岭县农业局土肥站,贵州关岭561300

出　　处：《贵州农业科学》2017年第3期94-96,共3页Guizhou Agricultural Sciences

基　　金：2013年农业部测土配方施肥补贴项目[黔财农(2012)474];贵州省科技厅创新能力建设项目"农作物系统模拟研究"[黔科合农G字(2009)4010];贵州省科技厅农业攻关项目"用于水肥一体化的液体肥研制与示范研究"[黔科合NY(2013)3076];贵州省农业科学院专项"沼肥在有机农业中的应用研究与示范"[黔农科院院专项(2009)025];贵州省社会发展攻关项目"畜禽养殖废弃物综合利用研究及应用"[黔科合SZ字(2009)3005];2012年省级财政现代农业特色优势产业发展资金中药材(桔梗)产业项目"施肥措施对桔梗生长;产量及品质的影响"[安市财农(2012)134]

摘　　要：为贵州省关岭县大面积实施桔梗苗种植施肥提供参考,在关岭自治县沙营乡红岔村中药材种植试验示范基地,采用3414试验方案,设氮、磷和钾肥3个因数、4个水平,共14个处理,进行桔梗1年生小苗栽培肥效试验。结果表明:在当地土壤肥力条件下,不同肥料种类对桔梗1年生小苗生长有明显促进作用,从而提高桔梗产量,其中以施肥配比(kg/667m^2)N∶P_2O_5∶K_2O=11.2∶10.95∶17.2的产量最高,达1 504.46kg/667m^2。经回归分析,最佳施肥配比(kg/667m2)为N∶P_2O_5∶K_20=10.32∶9.26∶12.96,产量为1 476.31kg/667m2。The fertilizer effect experiment of P. grandiflorus seedlings with one year old was conducted by the 3414 test design with three factors and four levels at the cultivation demonstration base of traditional Chinese medicinal materials in Hongcha Village, Guanling County to discuss the effect of N, P and K combined fertilization on yield of P. grandiflorus and to provide a reference for rational fertilization in large-area cultivation of P. grandiflorus seedlings in Guanling County, Guizhou. Results：Different N, P and K combinations with different ratios all have the significant promoting effect on growth of P. grandiflorus seedlings with one year old under the local soil fertility, which results in yield increase of P. grandiflorus. The yield of P. grandiflorus seedlings with one year old applied with the combination ratio of N：P2O5：K20= 11.2： 10.95：17.2 can reach 1 504.46 kg/667m^2 （the highest）. The regression analysis shows that the optimum N：P2O5 ： K2O ratio is 10. 32 ： 9. 26：12. 96 and the yield of P. grandiflorus seedlings can reach 1 476.31 kg/667m^2.

关 键 词：桔梗 氮磷钾配施 产量 关岭 贵州 

分 类 号：S567.239[农业科学—中草药栽培]