Effects of Potassium Levels on Storage Root Yield and Nutrient Utilization of Purple Sweet Potato

doi:10.7668/hbnxb.2018.05.031

Abstract

Abstract: In order to find out the effect of different potassium doses on the yield and nutrient utilization of purple sweet potato,it provides theoretical and practical basis for the rational application of potash fertilizer. Using design of randomized block experiment,field experiment and chemical analysis method,the different amount of potassium application on low fertility soil accumulation of dry matter,yield and its components purple sweet potato factor,NPK factor accumulation,the effects of potassium use efficiency were studied. The results showed that dry matter accumulation in roots of purple sweet potato was higher than that of K₀ treatment during the growth of sweet potato,when the amount of potassium was 180 kg/ha,the accumulation of root dry matter reached the maximum. Potassium had effect on the accumulation and distribution of dry matter,increased the number of potatoes and single potato weight,and could increase the yield of sweet potato and obtain the largest yield increase when the rate of potassium application was 180 kg/ha. Compared with the K₀,the yield increased by 20.78% and 26.19%,respectively,in 2016 and 2017,and the difference was significant(P <0.05).Compared with K₀ treatment,potassium could promote the absorption of nitrogen and phosphorus in purple sweet potato,significantly increased the accumulation of whole plant nitrogen and phosphorus,and increased the maximum growth rate of K₃. The accumulation amount of the root and the whole plant nitrogen increased by 75.38% and 65.75% respectively,and the cumulative phosphorus accumulation increased by 45.24% and 60.28%,respectively,and difference was significant(P <0.05). Besides,potassium fertilizer treatments could also increase the utilization ratio of potash fertilizer and agronomic efficiency. Compared with K₀,apparent utilization and agriculture utilization increased by 47.82 percentage points and 158.11%,respectively,and the difference was significant(P <0.05). Therefore,the optimum application dosage of potassium fertilizer was confirmed to be 180 kg/ha.

Key words: Purple sweet potato, Potassium, Yield, Nutrient utilization

CLC Number:

S531
S143.3

ZHAO Fengqin, LIU Qing, DU Zhiyong, SHI Yanxi. Effects of Potassium Levels on Storage Root Yield and Nutrient Utilization of Purple Sweet Potato[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2018, 33(5): 226-231. doi: 10.7668/hbnxb.2018.05.031.

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References

[1] 汪顺义,李欢,史衍玺,等. 甘薯钾素营养研究进展[J]. 青岛农业大学学报:自然科学版,2014(4):272-276.
[2] 柳洪鹃,姚海兰,史春余,等. 施钾时期对甘薯济徐23块根淀粉积累与品质的影响及酶学生理机制[J]. 中国农业科学,2014,47(1):43-52.
[3] 刘倩. 施钾对甘薯产量品质及营养元素吸收的影响[D]. 泰安:山东农业大学,2014.
[4] 齐鹤鹏,安霞,刘源,等. 施钾量对甘薯产量及钾素吸收利用的影响[J]. 江苏农业学报,2016,32(1):84-89.
[5] 宁运旺,马洪波,许仙菊,等. 氮磷钾缺乏对甘薯前期生长和养分吸收的影响[J]. 中国农业科学,2013,46(3):486-495.
[6] 赵庆鑫,江燕,史春余,等. 氮钾互作对甘薯氮钾元素吸收、分配和利用的影响及与块根产量的关系[J]. 植物生理学报,2017,53(5):889-895.
[7] 武维华. 植物响应低钾胁迫及钾营养高效的分子调控网络机制研究[J]. 中国基础科学,2007,9(2):18.
[8] 陈根辉,郭其茂,林子龙,等. 不同施钾量对龙薯28号产量和农艺性状的影响[J]. 作物杂志,2017(3):91-95.
[9] 宁运旺,曹炳阁,朱绿丹,等. 施钾水平对甘薯干物质积累与分配和钾效率的影响[J]. 江苏农业学报,2012,28(2):320-325.
[10] 曹月阳. 不同品种甘著钾素吸收积累特征及钾效率的研究[D]. 南京:南京农业大学,2014.
[11] 林琪,石岩,位东斌,等. 不同氮、钾配比对夏甘薯生长发育及产量形成的影响[J]. 土壤肥料,1996(5):43-45.
[12] 邓日烈,温玉辉. 钾肥对甘薯产量影响的初探[J]. 佛山科学技术学院学报:自然科学版,2002,20(1):74-77.
[13] 杨新笋,周宏,程航,等. 不同钾肥施用量对鄂薯5号产量和品质的影响[J]. 湖北农业科学,2007,46(2):208-209.
[14] 张定一,张永清. 施钾量对强筋小麦产量和品质的影响[J]. 中国生态农业学报,2007,15(3):32-37.
[15] 王秋媛,田江梅,韩叙,等. 磷对淀粉型甘薯产量及养分吸收利用的影响[J]. 植物营养与肥料学报,2015,21(5):1252-1260.
[16] 于振文,梁晓芳,李延奇,等. 施钾量和施钾时期对小麦氮素和钾素吸收利用的影响[J]. 应用生态学报,2007,18(1):69-74.
[17] 吕长文,赵勇,唐道彬,等. 不同类型甘薯品种氮、钾积累分配及其与产量性状的关系[J]. 植物营养与肥料学报,2012,18(2):475-482.
[18] Osaki M,Ueda H,Shinano T,et al. Accumulation of carbon and nitrogen compounds in sweet potato plants grown under different nitrogen application rates[J]. Soil Sci Plant Nutr,1995,41(3):547-555.
[19] 姜存仓. 不同基因型棉花对钾的反应差异及其机理研究[D]. 武汉:华中农业大学,2006.
[20] 蔡艺艺,陈国防,盛锦寿,等. 氮磷钾肥对甘薯养分积累的影响[J]. 农技服务,2007,24(11):21-23.
[21] 田江梅. 氮磷钾肥对甘薯产量品质影响及光合和养分积累的调控[D]. 重庆:西南大学,2016.
[22] 王晓光,曹敏建,于海秋,等. 不同基因型大豆吸收利用钾素的差异分析[J]. 沈阳农业大学学报,2008,39(5):520-524.
[23] 任国博,史春余,姚海兰,等. 施钾时期对甘薯产量及钾肥利用率的影响[J]. 中国土壤与肥料,2015(5):33-36.
[24] Wang J D,Wang H Y,Zhang Y C,et al. Intraspecific variation in potassium uptake and utilization among sweet potato(Ipomoea batatas L.)genotypes[J]. Field Crops Research,2015,170:76-82.
[25] 胡承孝,王运华. 不同小麦品种钾吸收、分配特性及其钾营养效率的差异(英文)[J]. 华中农业大学学报,2000,19(3):233-239.
[26] 王凌云,贾峥嵘,李江辉,等. 不同氮磷钾肥施用量对甘薯产量及养分利用率的影响[J]. 山西农业科学,2016,44(6):790-793.

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