The soil relative humidity measurements from the agrometeorological automatic station and manual observation of the Juxian Meteorological Bureau at the same time in a natural state of non-irrigation from 21 September 2005 to 18 December 2006 are compared and analyzed by means of the difference contrast,difference probability,and correlation methods.

Inversion of soil moisture using bi-temporal ASAR images;

Statistics of the average distance of polarization index derived from data of space-borne microwave remote sensing and soil moisture mapping;

Analysis on the temporal and spatial feature of soil moisture variation of He nan Province in recent 20 years;

This model cao used to classify the data acquisition points of soil humidity in forests.

To grope for the influence of climate condition to acetochlor efficacy and injury, the influence of soil humidity to injury of acetochlor were studied by the plot experiment in May to September o.

Soil humidity decreases along with coverage increase,soil humidity of 0-60cm decrease with a rate of 1.

The soil moisture contents was maintained at 30%, 50% or 70% water holding capacity(WHC).

In the research of dust storm,the gale and soil moisture content of land surface are the two important factors which affect the occurrence of dust storm,and they are recorded by quantitative form.

a new method that dew point temperature and absolute humidity is jointly monitored is using in Liaoning power plant.

This paper has intruduced the design principle, functio n and performance index of the QJY-A type hydrogen humidity monitor and the appl ication for on-line measuring hydrogen absolute humidity of the hydrogen -coo led generator set in the generation station.

Corona onset voltage diminishes with the increase of absolute humidity and the decrease of relative air density.