| 施钾对膜下滴灌马铃薯产量·品质及钾素利用效率的影响 |
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| 引用本文： | 王丽丽,张,胜,蒙美莲等.施钾对膜下滴灌马铃薯产量·品质及钾素利用效率的影响[J].安徽农业科学,2014(3):731-734. |
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| 作者姓名： | 王丽丽 张 胜 蒙美莲等 |
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| 作者单位： | 内蒙古农业大学农学院,内蒙古呼和浩特010019 |
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| 基金项目： | 国家现代农业产业技术体系建设专项（CARS-10-P17）. |
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| 摘 要： | 目的]为了研究膜下滴灌栽培模式下不同施钾量和施钾模式对马铃薯块茎产量、淀粉及粗蛋白质含量、钾素吸收利用效率的影响。方法]以冀张薯8号为试验材料,设105、210、315 kg/hm23种施钾量和2种施钾模式。结果]随着施钾量的增加,块茎淀粉含量呈先增后降趋势,粗蛋白含量呈逐渐增加趋势,而块茎产量、钾素的生理及利用效率呈降低趋势。当施钾量为105 kg/hm2时,块茎产量最高,钾肥的吸收利用率最大。结论]施钾量的1/2用于基施,另1/2用于追施,有利于块茎淀粉含量、粗蛋白含量及钾肥吸收效率的提高,建议生产中将部分钾肥用于追施效果更好。
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| 关 键 词： | 马铃薯 产量 淀粉含量 蛋白质含量 利用效率 |
Effects of Potassium Application on Production,Quality and Potassium Fertilizer Utilization Efficiency of Coated Drip Irrigation Po- tato |
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| Institution: | WANG Li-li et al ( Agricultural College of Agronomy, Inner Mongolia Agricultural University, Huhhot, Inner Mongolia 010019) |
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| Abstract: | Objective ] The research aimed to study the effects on potato yield , tuber starch content, protein content and K utilization efficien- cy by different potassium fertilization, different potassium fertilizer mode and coated drip irrigation. Method ] Jizhangshu eight was used as experimental materials. Three potassium fertilization of 105, 210 and 315 K20 kg/hm2 and two potassium fertilizer modes were set. Result] With the increase of potassium fertilization, tuber starch content was increased. When tuber starch content came up to the hightest , then droped with the fertilizing dosage increasing, the protein content was increased with the increasing application of potassium fertilization, but yield, K NPE and NUTE were decreased. When the application of potassium fertilization was 105 kg/hm2 , tuber yield was the hightest and K utilization efficiency was the biggest. At two potassium fertilizer mode, tuber starch content, crude protein content and tuber yield weren＇ t sig- nificantly different. Conclusion ] 1/2 bottom application and 1/2 dressing application （ tuber initiation stage） could increase tuber starch con- tent. protein content and NUPE. In the production, a Dart ootassium as dressing application would be better. |
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| Keywords: | Potato Yield Starch content Protein content Utilization efficiency |
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