Theory and evidence indicate that trees and other vegetation influence the atmospheric water-cycle in various ways.These influences are more important, more com
<正> The field experiment designs with single replicationwere frequently used for factorial experiments inwhich the numbers of field plots were limited, butthe
<正> The mechanization of rice production in China hasexperienced a comparatively long and an undulatingprocess.The full-scale making of mechanization ofirrigat
<正> Seedlings of drought-tolerance rice varieties Han 501and Han A03,and the drought sensitive varietiesNanjing 11 and Yanjing 2 were raised in a paddyfield an