中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 旱地土壤条件下包膜控释肥料养分释放的试验与数学模拟 磷肥与复肥 2006,21 (2) 16-21
Position: Home > Articles > Experimental study on nutrient release from coated controlled release fertilizer in the upland soil condition and its mathematic simulation Phosphate & Compound Fertilizer 2006,21 (2) 16-21

旱地土壤条件下包膜控释肥料养分释放的试验与数学模拟

作  者：
郑圣先;肖剑;易国英
单  位：
湖南省土壤肥料研究所
关键词：
旱土;包膜控释肥料;养分释放;数学模拟
摘  要：
采用室内培养方法,测定了不同土壤水分含量条件下指数线性和S线性包膜控释肥料养分释放速率。计算出不同土壤含水量条件下养分释放速率常数(k)。该k值与土壤在最大持水量30%时的k值的比值定义为释放速率系数a,并用土水势(Ψ)的函数表示。分别建立不同旱土水分含量条件下指数线性和S线性包膜控释肥料养分释放数学模型。结果表明,这两个数学模型能够较好地模拟指数线性和S线性包膜控释肥料在自然旱地条件下,任一日变化土温和任一日变化土壤含水量下的氮素释放率,模拟值与实测值基本一致,表明这两个数学模型具有实用性。
译  名：
Experimental study on nutrient release from coated controlled release fertilizer in the upland soil condition and its mathematic simulation
作  者：
ZHENG Shengxian,XIAO Jian,YI Guoying(Hunan Province Research Institute of Soil and Fertilizer,Changsha,Hunan 410125,China)
关键词：
upland soil;filmcoated controlled release fertilizer;nutrient release;simulation
摘  要：
Incubation method in the laboratory is used to determine the nutrient release rate for linear and sigmoidal filmcoated controlled release fertilizers,and the release constant(k)is calculated from the nutrient release data with different soil moistures.The release rate coefficient(a)is defined as the ratio both k values under the each soil moistures and 30% moisture,and expressed as a function of soil moisture potential(Ψ).Mathematic models of linear and sigmoidal filmcoated controlled release fertilizer in different soil moisture conditions are developed respectively.Results show that release values simulated with some daily changed soil moisture content and some daily changed soil temperature in the natural upland field,agree well with the measured release values.The two mathematic models are useful in practice.

相似文章

导出引用
计量
文章访问数: 8
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46