甘薯‘桂粉3号’氮磷钾肥料效应研究  

Effect of N, P and K Fertilizer on Sweet Potato Cultivar ‘Guifen No.3'

作　　者：李慧峰[1] 陈天渊[1] 黄咏梅[1] 滑金锋[1] 吴翠荣[1] 李彦青[1] 

机构地区：[1]广西农业科学院玉米研究所,广西南宁530007

出　　处：《热带农业科学》2016年第7期13-16,21,共5页Chinese Journal of Tropical Agriculture

基　　金：广西科学研究与技术开发计划项目(No.桂科转14125004-12);国家甘薯产业技术体系南宁综合试验站项目(No.CARS-11-C-19);广西现代农业产业技术体系薯类创新团队项目(No.nycytxgxcxtd-03-11-3)

摘　　要：对甘薯‘桂粉3号’开展"3414"肥料效应试验,研究不同氮、磷、钾肥配比对甘薯农艺性状以及鲜薯产量的影响,探索出最佳施肥量。结果表明,不同氮磷钾配比对甘薯最长蔓长、单株结薯数和单株大中薯鲜重影响较大,对分枝数、干物率和淀粉率影响较小。在各施肥处理中,处理6的产量最高,增产率达52.44%,处理8的产投比最高,为127.48。在试验地力条件下,推荐的最佳施肥量:为N 101.21 kg/hm^2、P(P2O5)67.22kg/hm^2、K(K2O)213.09 kg/hm^2,可获35 104 kg/hm^2的鲜薯产量。A ＂3414＂ fertilization experiment was conducted to study the effect of N, P, K on agronomic characters and fresh root yield of sweet potato to obtain the optimized fertilization amount. The result showed that the different NPK ratio fertilizers have huge effect on the max vine length, the root tuber number of single plant and the weight of big-sized and middle-sized tubers of single plant, has poor effect on proximal branch, the dry matter content, and the starch content. Among al the treatments,treatment 6 has highest yield, which increased by 52.44% than control. The highest ratio of output to input is treatment 8 with127.48. Under the condition of the soil, the optimal fertilization recommendation is N 101.21 kg/hm^2, P（P_2O_5） 67.22 kg/hm^2, K（K_2O）213.09 kg/hm^2, under this condition could harvest sweet potato fresh root yield of 35.1 t/hm2.

关 键 词：甘薯 氮磷钾 肥料效应 农艺性状 产量 

分 类 号：S531[农业科学—作物学]