| 不同施钾量对砂质潮土冬小麦产量、钾效率及土壤钾素平衡的影响 |
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| 引用本文： | 王宜伦,苗玉红,谭金芳,韩燕来,汪强.不同施钾量对砂质潮土冬小麦产量、钾效率及土壤钾素平衡的影响[J].土壤通报,2010(1). |
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| 作者姓名： | 王宜伦 苗玉红 谭金芳 韩燕来 汪强 |
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| 作者单位： | 河南农业大学资源与环境学院; |
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| 基金项目： | 中国-加拿大国际合作(IPNI)平衡施肥项目(30200108)资助 |
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| 摘 要： | 在砂质潮土上通过田间试验研究了不同施钾量对冬小麦产量、钾素积累量、钾效率和土壤钾素平衡的影响,结果表明:砂质潮土施用钾肥能明显提高冬小麦产量,增产率为7.9%～27.7%;冬小麦植株钾素积累量随施钾量的增加而增加,拔节到灌浆期植株钾积累量增加较多;钾生理效率、钾素吸收效率、钾肥效率和钾肥当季回收率均随施钾量的增加而减少,钾效率和钾收获指数则呈先增后减趋势,以施K2O150kghm-2最佳;钾肥用量应达到K2O150kghm-2以上才能维持土壤钾素肥力;从钾肥增产增收效应、钾效率、土壤钾素平衡等多方面综合考虑,以施钾量150kghm-2效果最好,与不施钾处理相比可增产1462.2kghm-2,K2O每kg增产8.25kg,增收1069元hm-2,钾肥当季回收率为41.6%,并实现土壤速效钾的平衡。
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| 关 键 词： | 冬小麦 钾肥用量 产量 钾效率 钾肥当季回收率 土壤钾素平衡 |
Effects of Different Potassium Fertilizer Application Rates on Yield,K-efficiency of Winter Wheat and Soil Available K Balance in Sandy Chao Soil |
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| WANG Yi-lun,MIAO Yu-hong,TAN JIN-fang,HAN YAN-lai,WANG Qiang.Effects of Different Potassium Fertilizer Application Rates on Yield,K-efficiency of Winter Wheat and Soil Available K Balance in Sandy Chao Soil[J].Chinese Journal of Soil Science,2010(1). |
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| Authors: | WANG Yi-lun MIAO Yu-hong TAN JIN-fang HAN YAN-lai WANG Qiang |
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| Institution: | WANG Yi-lun,MIAO Yu-hong,TAN JIN-fang,HAN YAN-lai,WANG Qiang (College of Resources , Environment,Henan Agricultural University,Zhengzhou 450002,China) |
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| Abstract: | Field plot experiment was used to study the effect of potassium fertilizer application on the yield,quality of winter wheat and soil K balance in the sandy Chao soil in Henan Province.The results showed that potassium fertilizer increased evidently the yield of winter wheat,the increases rate was 7.9%-27.7%.The plant K accumulation enhanced with the increase of potassium fertilizer rate,and it was larger from Jointing stage to Filling stage.The K plant efficiency,K utilizing plant efficiency,Potassium ferti... |
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| Keywords: | Sandy Chao Soil Winter Wheat Potassium Fertilizer Application Yield K-efficiency Potassium Fertilizer Recovery Rate Soil K Balance |
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