土壤水分辅助测定设备研发必要性分析

Necessity Analysis of the Development of Soil Moisture Auxiliary Measurement Equipment

摘要: 土壤水是作物吸收水分的主要来源，也是构成土壤肥力和土壤性质的重要因素。测定方法分为仪器速测和实验室测定两种。速测仪器通过测定土壤的介电常数，间接反映各类型土壤的水分含量，具有便携、快速、准确等优点。实验室测定采用的烘干称重法，是直接测量土壤水分含量的唯一方法，在测量精度上优势明显，用于其它方法的标定。设计一种土壤含水量辅助测定装置，包含下托板、防尘通气盖板、土壤样品盒、标签粘贴位等结构，解决现有装置样品易移位，操作繁琐、效率低等技术问题，在科学研究、工程实践及工业制造领域具有广阔的应用前景。

Abstract: Soil water is the main source of water absorption for crops and an important factor in soil fertility and properties. The measurement methods are divided into two types: instrument rapid measurement and laboratory measurement. The rapid measuring instrument indirectly reflects the moisture content of various types of soil by measuring the dielectric constant of the soil, and has the advantages of portability, speed, and accuracy. The drying and weighing method used in laboratory testing is the only method for directly measuring soil moisture content, which has obvious advantages in measurement accuracy and is used for calibration of other methods. A device for the assisted determination of soil water content is designed, and the device includes a lower tray, a dustproof ventilation cover, a soil sample box, a label sticking position, and other structures. This instrument can solve the technical problems of easy sample displacement, cumbersome operation and low efficiency. It has broad application prospects in scientific research, engineering practice, and industrial manufacturing fields.