| 高海拔地区钾素营养对马铃薯品质及增产效应的研究 |
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| 引用本文： | 郭振升,崔保伟.高海拔地区钾素营养对马铃薯品质及增产效应的研究[J].吉林农业科学,2013(1):15-18. |
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| 作者姓名： | 郭振升 崔保伟 |
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| 作者单位： | 商丘职业技术学院 |
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| 基金项目： | 贵州大学人才基金项目(X060034) |
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| 摘 要： | 采用大田试验,研究了高海拔地区钾素营养对马铃薯品质的影响及增产效应。结果表明,适量的钾肥施用量既可以增加马铃薯单株结薯块数及大中薯块的比例,减少小薯块的数量,同时还能提高马铃薯的淀粉、维生素和蛋白质含量。随着钾肥施用量的增加,马铃薯块茎产量、大薯率、净增产值、产投比均呈现先上升后下降的趋势,钾肥(K2O)施用量在180 kg/hm2时虽能获得较好的块茎产量和大薯率,但不能获得较高的经济效益,综合产量和经济效益分析,最佳的钾肥(K2O)施用量135 kg/hm2左右为宜。
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| 关 键 词： | 高海拔地区 马铃薯 钾素营养 品质 增产效应 |
Studies on Effect of Potassium Nutrition on the Quality and Yield Increasing of Potato in High Altitude Area |
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| GUO Zhen-sheng,CUI Bao-wei.Studies on Effect of Potassium Nutrition on the Quality and Yield Increasing of Potato in High Altitude Area[J].Jilin Agricultural Sciences,2013(1):15-18. |
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| Authors: | GUO Zhen-sheng CUI Bao-wei |
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| Institution: | (Shangqiu Professional Technology College,Shangqiu 476005,China) |
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| Abstract: | Effect of potassium nutrition on the quality and yield increasing of potato in high altitude area was studied by the field trial.The results showed that appropriate K application could increase the number of potatoes per plant and proportion of large and medium-sized tubers and decrease the number of the little ones.Meanwhile the starch,vitamin and protein content of potato were increased.With the increase of K application rate,the tube yield,the percentage of big tubers,net value,the ratio of output to input presented the trend of increases firstly and then decrease.The tube yield and the percentage of big tubers were got when K2O application rate was 180 kg/hm2 but the economic efficiency was not higher.Comprehensive analyzing the yield and economic efficiency,135 kg/hm2 was the appropriate of K2O application. |
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| Keywords: | High altitude areas Potato Potassium nutrition Quality Yield increase effect |
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