摘要
配方施肥是广大农作物生产者迫切希望实现的愿望,配方施肥的前提是准确测量土壤成分及植株养分。本文简要介绍了基于单片机控制的土壤成分快速分析仪的组成结构及功能,阐述了土壤成分和植株养分的测量原理及测量精度对光源强度的两个要求,在此基础上着重分析了影响测量精度的主要因素,根据分析研究的结果,采取相应措施,针对不同测量项目控制光强大小,并保持光强动态稳定性,为土壤成分等项目的高精度测量奠定了基础。事实证明,这是一种切实可行的提高土壤成分测量精度的有效方法。
Most croppers have a desire to apply a fertilizable prescription to soil, the precondition of which is to measure accurately soil composition and the nutrients in individual plants. This paper introduces simply the organization and the functions of an instrument for analyzing rapidly soil composition based on microcontroller,and describes measuring principles on soil composition and the nutrients in individual plants, and two demands on light intensity.Then,the paper mainly analyzes important factors which influence measuring precision. According to the results of analysis and research,the authors have taken corresponding steps, controlled the size of light intensity for different measured items and kept the dynamic stability of light intensity. It has been proved to be an effective method to improve measuring precision of soil composition.
出处
《信息工程大学学报》
2002年第4期32-34,共3页
Journal of Information Engineering University
