The Experimental Study On Water Aggregation Technology Of Cathode Under Space Electric Field

Drought and water shortage are worldwide problems in 21st century. Controlling of soil water evaporation and collecting of aerial water have become significant approaches to improve water shortage in droughty region. A new water aggregation technique- water aggregation of cathode in space electric field is proposed in the thesis. Applying positive, direct current and high pressure electric field to chestnut soil, the effect of electric field on water collection is investigated. With the comparison of experimental results in space electric field with that in atmosphere field, the change trend of water content in soil and the moisture character of soil profile are analyzed. It is indicated that positive space electric field could suppress water evaporating effectively in sunny day, thereby it is up to water aggregation of cathode in soil. Experiment effects of different pole distances of electric field (2.5m, 2.0m, 1.5m) on soil versus water content are done. It is found that the result under 2.0m is better. Then barley growth experiment is carried out under atmosphere electric field and space electric field respectively. The result demonstrates that proper positive space electric field can raise soil water content around the root. It also proves that positive electrical field can increase the weight of seeding and promote plant growing higher, especially for the fresh weight of root&leaf and plant height, increasing by 26.3%~52.6%, 24.0%~68.5% respectively. The research provides a reference for the further application of water aggregation technology of cathode under space electric field. It also offers a new content for further development of space electric field in agriculture.