| 药雾浓度沉降曲线拟合方法的试验)(简报) |
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| 引用本文： | 吴 昊,邱白晶,汤伯敏.药雾浓度沉降曲线拟合方法的试验)(简报)[J].农业工程学报,2008,24(10):118-121. |
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| 作者姓名： | 吴 昊 邱白晶 汤伯敏 |
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| 作者单位： | 1. 汀苏大学,江苏省现代农业装备与技术重点实验室,镇江,212013
2. 农业部南京农业机械化研究所,农业部植保机械重点开放实验室,南京,210014 |
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| 基金项目： | 国家自然科学基金，国家科技支撑计划 |
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| 摘 要： | 为了解温室大棚等密闭空间喷雾后的药雾浓度衰减规律,该文以常温烟雾机在棚室中喷雾后的药雾浓度为研究对象,针对D.K.Giles的药雾浓度沉降曲线拟合方法进行了改进,相对于老方法将采样时间段内获得的药雾浓度值置于中间时刻点进行拟合,新方法将该值分别对应于该时间段内3个不同时刻点进行拟合分析。新方法同时还建立了比较曲线拟合优劣的一种工程判据,据此判据得出在5 min的采样时间段条件下,将采样数据作为该采样时间段内第2 min时刻点的药雾浓度值,然后进行拟合,所得药物总质量和实际施用药物总质量相对误差最小,仅为1.6%。研究还表明,在浓度沉降过程中,某一采样周期内的浓度值主要由这一时间段的前段采样所贡献。
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| 关 键 词： | 拟合方法 试验 药雾浓度 沉降曲线 大气采样器 |
| 收稿时间： | 2007/12/26 0:00:00 |
| 修稿时间： | 9/5/2008 12:00:00 AM |
Fitting method of pesticide deposition curves |
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| Wu Hao,Qiu Baijing and Tang Bomin.Fitting method of pesticide deposition curves[J].Transactions of the Chinese Society of Agricultural Engineering,2008,24(10):118-121. |
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| Authors: | Wu Hao Qiu Baijing and Tang Bomin |
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| Institution: | Jiangsu Provincial Key Laboratory of Modern Agricultural Equipment and Technology,Jiangsu University,Zhenjiang 212013,China,Jiangsu Provincial Key Laboratory of Modern Agricultural Equipment and Technology,Jiangsu University,Zhenjiang 212013,China and Ministry of Agriculture Key lab of Crop Protection Machinery,Nanjing Research Institute for Agricultural Mechanization,Nanjing 210014,China |
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| Abstract: | In order to investigate the attenuation law of pesticide concentration in the greenhouse after spraying,studies are made on the pesticide concentrations of the smoking machine within normal temperature after being sprinkled in the greenhouse,and then the improvements are made for the fitness methods of pesticide concentrations presented by D.K.Giles.Comparing with the former method which set the concentration values of the pesticides at the middle of sampling time field to do fitness analysis,the new method is that the concentration values of the pesticides obtained within the sampling stages are correspondent to those of the fitness analyses at three different moments within the sampling stage.At the same time,the engineering criteria is established for the comparison of the curve fitness functions,and it is obtained from this result that in the condition with the sampling stage of 5 min,the sampled data are taken fit for the value of the pesticide concentrations of the second minute within the sampling stages,thus the relative error is minimum between the total amount of the chemicals and the actually-using amount,only with 1.6%.Moreover,it is shown that during the process of pesticide concentration decomposition,any value of the concentrations within the sampling stage is contributed from that of the previous sampling before the sampling stage. |
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| Keywords: | fitting method experiments concentration of pesticide fog deposition curve atmosphere sampler |
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