| 钾肥不同基追比对冬小麦产量、养分积累及钾肥利用效率的影响 |
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| 引用本文： | 王宜伦,苗玉红,张许,韩燕来,谭金芳.钾肥不同基追比对冬小麦产量、养分积累及钾肥利用效率的影响[J].江西农业学报,2009,21(12):46-48. |
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| 作者姓名： | 王宜伦 苗玉红 张许 韩燕来 谭金芳 |
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| 作者单位： | 河南农业大学,资源与环境学院,河南,郑州,450002 |
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| 基金项目： | 中国-国际植物营养研究所(IPNI)合作项目 |
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| 摘 要： | 采用大田试验研究了钾肥不同基追比对冬小麦产量、植株养分积累量及钾肥利用效率的影响,研究结果表明:施用钾肥能够增加冬小麦产量、提高植株养分积累量;钾肥分次施用增产效果好于钾肥全部基施,亦能增加冬小麦后期植株养分积累量,提高钾肥利用效率。钾肥增产率为1.59%~7.55%、钾肥农学效率为1.21~5.75 kg/kg、钾肥利用率为36.37%~57.63%、钾肥偏生产力为77.37~81.91 kg/kg,各施钾处理中均以钾肥50%基肥+50%拔节期追肥效应最佳。
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| 关 键 词： | 冬小麦 产量 钾肥 基追比 养分积累 钾肥利用效率 |
Effects of Ratio of Basal to Dressing Application of Potassium Fertilizer on Yield, Nutrient Accumulation of Winter Wheat and Use Efficiency of Potassium Fertilizer |
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| WANG Yi-lun,MIAO Yu-hong,ZHANG Xu,HAN Yan-lai,TAN Jin-fang.Effects of Ratio of Basal to Dressing Application of Potassium Fertilizer on Yield, Nutrient Accumulation of Winter Wheat and Use Efficiency of Potassium Fertilizer[J].Acta Agriculturae Jiangxi,2009,21(12):46-48. |
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| Authors: | WANG Yi-lun MIAO Yu-hong ZHANG Xu HAN Yan-lai TAN Jin-fang |
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| Abstract: | Field experiment was conducted to study the effects of different ratios of basal to dressing application of potassium fertilizer on the yield,nutrient accumulation of winter wheat and the use efficiency of potassium fertilizer.The results showed that potassium fertilizer application could increase the yield and plant nutrient accumulation of winter wheat.Potassium fertilizer application in two dressings had better yield-increasing effect than its application as whole basal fertilizer,it could also increase the later plant nutrient accumulation of winter wheat and enhance the use efficiency of potassium fertilizer.After potassium fertilizer application,the yield-increasing rate was 1.59%~7.55%,agronomic efficiency was 1.21~5.75 kg/kg,apparent use efficiency of potassium fertilizer was 36.37%~57.63%,partial factor productivity was 77.37~81.91 kg/kg.Among different treatments of potassium fertilizer application,the application of basal fertilizer 50% + top dressing 50% at jointing stage was the best. |
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| Keywords: | Winter wheat Yield Potassium fertilizer Ratio of basal manure to top dressing Nutrient accumulation Use efficiency |
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