| 施钾时期对甘薯植株性状及产量的影响 |
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| 引用本文： | 姚海兰,张立明,史春余,张 超,柳洪鹃,张海峰. 施钾时期对甘薯植株性状及产量的影响[J]. 西北农业学报, 2010, 19(4): 82-85 |
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| 作者姓名： | 姚海兰 张立明 史春余 张 超 柳洪鹃 张海峰 |
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| 作者单位： | 1. 山东农业大学,农学院,作物生物学国家重点实验室,山东泰安,271018
2. 山东省农业科学院,济南,250100 |
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| 基金项目： | 山东省自然科学基金，国家甘薯产业技术体系资助 |
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| 摘 要： | 以鲁薯8号为材料,在相同施钾量的基础上,研究不同生育时期施钾对甘薯植株性状及产量的影响。结果表明,基施或封垄期追施钾肥有利于甘薯基部茎节发育和分枝、提高单薯质量和大薯比例,显著提高块根产量;其中,全部钾肥基施增产11.93%,1/2基施+1/2封垄期追施增产10.53%,全部钾肥在封垄期追施增产9.07%。高峰期追施钾肥可以提高后期叶绿素含量和中薯比例,但是产量增幅变小、干率下降。综合考虑钾肥产块根的效率、以及施肥的方便性,以全部钾肥基施为宜。
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| 关 键 词： | 甘薯 施钾时期 产量 |
Effects of Potassium Application Period on the Plant Traits and Yield of Sweet Potato |
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| YAO Hailan,ZHANG Liming,SHI Chunyu,ZHANG Chao,LIU Hongjuan and ZHANG Haifeng. Effects of Potassium Application Period on the Plant Traits and Yield of Sweet Potato[J]. Acta Agriculturae Boreali-occidentalis Sinica, 2010, 19(4): 82-85 |
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| Authors: | YAO Hailan ZHANG Liming SHI Chunyu ZHANG Chao LIU Hongjuan ZHANG Haifeng |
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| Affiliation: | YAO Hailan1,ZHANG Liming2,SHI Chunyu1,ZHANG Chao1,LIU Hongjuan1 , ZHANG Haifeng1(1.Agronomy College,Sh,ong Agricultural University,State Key Laboratory of Crop Biology,Tai'an Sh,ong271018,China,2.Sh,ong Academy of Agricultural Sciences,Jinan 250100,China) |
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| Abstract: | Lushu No.8 was used to study the effects of potassium application period on the plant traits and yield of sweet potatoes.The results showed that applying potassium as basal dressing or top cover fertilizer promoted the basal stem growth and increased branch number,fresh weight,the percentage of big storage root,and storage root yield.Compared with the control,applying all potassium once as basal dressing increased the yield by 11.93%,half potassium as basal dressing and top cover fertilizer respectively,yie... |
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| Keywords: | Sweet potato Potassium application period Yield |
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