农业气象自动站与人工观测值的对比分析

采用对比差值、差值概率、相关系数等方法,对济阳县2011年3月3日至2011年11月13日期间DZN1型自动土壤水分观测仪与同地段平行人工观测的土壤相对湿度资料进行统计分析。结果表明:人工观测的数据反映的土壤水分变化波动较大,自动观测仪的土壤水分变化相对平缓。人工与自动观测资料的一致性在0～10 cm、10～20 cm土层表现最好,70～80 cm土层表现最差。分析结果旨在为DZN1型自动土壤水分观测仪的监测能力提供客观依据,更好地发挥土壤水分观测资料在经济建设和工农业生产中的应用价值。

Comparative Analysis of Values Obtained through Automatic Agricultural Weather Station and Artificial Observation

The relative soil humidity data obtained by DZN1 automatic soil moisture observation instrument and parallel artificial observation from March 3,2011 to November 13,2011 in Jiyang County were analyzed by the methods of contrast difference,difference probability,correlation coefficient.The results showed that the artificial observation data reflected greater fluctuation of soil moisture,while that obtained by automatic observation instrument changed in relative gentle.The consistency of artificial and automatic observation data was the best in the 0 ～ 10 cm and 10 ～ 20 cm of deep soil layer,while that in 70 ～ 80 cm of deep soil layer was the worst.The results provided objective basis for evaluating the monitoring capability of DZN1-type automatic soil moisture observation instrument,thus the soil moisture observation data could be utilized well in economic construction and production of industry and agriculture.