| 基于SUGIHARA模型的树脂包衣控释肥在土壤中释放规律的研究 |
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| 引用本文： | 陈延华,孙焱鑫,薛高峰,肖强,赵汝东,见翠芬.基于SUGIHARA模型的树脂包衣控释肥在土壤中释放规律的研究[J].土壤通报,2011(3):637-641. |
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| 作者姓名： | 陈延华 孙焱鑫 薛高峰 肖强 赵汝东 见翠芬 |
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| 作者单位： | 北京市农林科学院植物营养与资源研究所;北京市平谷农科所; |
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| 基金项目： | 北京市科委重大项目(d0706004040331)资助 |
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| 摘 要： | 包衣控释肥在土壤中释放规律的评价及预测对其推荐施肥有重要作用。通过室内恒温、不同含水量的土培和田间裸地试验,研究了土壤温度和含水量对控释肥(树脂包衣尿素,简称L1)氮素释放的影响,并用SUGIHARA模型预测L1在不同施肥时期的氮素释放规律。结果表明:温度是影响L1释放的主要因素;土壤含水量高于田间持水量的35%后,L1的释放不受含水量变化的影响;SUGIHARA模型适合对L1的氮素释放进行拟合,其中溶出速率常数K由温度决定,不同施肥期对应的K值不同,二者有很好的相关性。经检验,SUGIHARA模型可用于预测不同施肥时期的树脂包衣控释肥在土壤中氮素释放。
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| 关 键 词： | 温度 控释肥 SUGIHARA模型 溶出速率常数 |
Study on Releasing Mechanics of Resin -Coated Controlled-release Fertilizer in Soil Based on SUGIHARA Model |
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| CHEN Yan-hua ,SUN Yan-xin ,XUE Gao-feng ,XIAO Qiang ,ZHAO Ru-dong ,JIAN Cui-fen.Study on Releasing Mechanics of Resin -Coated Controlled-release Fertilizer in Soil Based on SUGIHARA Model[J].Chinese Journal of Soil Science,2011(3):637-641. |
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| Authors: | CHEN Yan-hua SUN Yan-xin XUE Gao-feng XIAO Qiang ZHAO Ru-dong JIAN Cui-fen |
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| Institution: | CHEN Yan-hua 1,SUN Yan-xin 1,XUE Gao-feng 1,XIAO Qiang 1,ZHAO Ru-dong 1,JIAN Cui-fen 2(1.Institute of Plant Nutrition and Resource,Beijing Academy of Agricultural and Forestry Sciences,Beijing 100097,China,2.Institute of Agricultural sciences of Ping gu,Beijing 101205,China) |
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| Abstract: | To estimate and forecast the nitrogen dissolving rate of resin-coated controlled-release fertilizer in soil plays an important role in recommending fertilization.Laboratory and field trials were carried out to study effects of tempera-ture and water content on nitrogen dissolving rate of controlled-release fertilizer(resin coated,L1),based on SUGI-HARA model.We forecasted L1's nitrogen release on different fertilization dates.Results showed the water content would not be restrictive factor when soil water c... |
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| Keywords: | Temperature Controlled-release fertilizer SUGIHARA model Dissolution rate constant |
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