农用遥测多点温湿度仪及田间实验效果

本文介绍了一种适用于农田、温室、森林、山地等小气侯研究的DYZ—1型遥测多点温湿度仪的原理、设计、性能及其田间使用效果。其设计方案是经计算机选优而得,具有较高的精度。在—25～50℃、20～100％RH范围内,温度标准差为0.1℃、湿度标准差为1％。该仪器在野外使用,经受了高温(36.9℃)高湿(99％)的考验,仪器运转正常、性能可靠。在北京(温带)、南京(亚热带)、海南岛(热带)三种不同气侯带与阿斯曼通风干湿表在田间进行对比实验,包括各种(辐射、观测等)误差在内,在5～36.9℃、19～99％RH范围内,温度标准差为0.23℃,湿度标准差为1.7％。

A MULTIPOINT TEMPERATURE AND HUMIDITY TELEMETER USED IN AGRICULTURE AND ITS PERFORMANCE

DYZ—1 is a Chinese-made adapted for the microclimate research work in field and greenhouse,forest and mountainous area with high precision. Its principle,design,feature as well as its application effects in the field are described in this paper. The standard deviations of temperature and relafive humidity of the air are 0.1℃ and 1%RH in the range of-25～50℃ and 20～100%RH. This instrument has stood the test of high temperature (36.9℃) and maximum humidity (99%) in the field and shown normal operation and dependable feature. In comparison with Assmannpsychrometer in the field in three di ffrent climate zones of Beijing (temperate zone),Nanjing (subtropical zone) and Hainan Island (tropical zone),its stan dard deviations of temperature and humidity were 0.23℃ and 1.7%RH in the range of 5～36.9℃ and 19～99%RH,including various errors (radiation,observation,etc.)