论文部分内容阅读
对中子测水技术的各个方面曾有较详尽的研究。中子仪测水的主要优点是:不破坏土壤原状,可在原地连续测定,避免土壤空间变异性带来的一系列问题,测定快速且较准确,无严重时滞等,其不足之处是,空间分辨力低,除水以外还受其它一些因素的影响。我国对中子仪的研制使用较晚,大多数根据国内外商品的说明进行工作,容易产生错误.本文的目的是通过测试江苏省农科院试制的 LZS—100型中子仪的分辨力,包括仪器计数误差、计数比与含水量的关系、探测范围的量测以及表土含水量及地下水面、土壤湿润锋的分辨等,说明如何了解本类仪器的性能和所能达到的精度范围。
Various aspects of neutron measurement techniques have been studied in more detail. The main advantage of neutron meter water measurement is: without destroying the original state of the soil, it can be continuously measured in situ to avoid a series of problems caused by the spatial variability of soil, the determination is rapid and accurate, and there is no serious time lag, etc. , Spatial resolution is low, in addition to water is also affected by some other factors. China’s development of neutron instrument used later, most of the work according to the description of goods at home and abroad, prone to error.The purpose of this paper is to test the resolution of the LZS-100 neutron meter trial production by Jiangsu Academy of Agricultural Sciences, Including the instrument count error, the relationship between the count ratio and water content, the detection range of measurement and topsoil moisture and groundwater, soil wetting front resolution, indicating how to understand the performance of this type of instrument and can reach the accuracy range.