第1个回答 2009-06-09
thesisare: vcsoa on the loess plateau rainfall early soil moisture on different soil slope perclolation, chrysogenum and relationshep characteretics products.adhere autdoor simulation of artificial experimental methods, oftraining gradiented different early, water and soil runoff and silt characteristics.study results indicate that the rainfall intensity in certain circumstances, soil moisture and terrain 4.8.03 gradiented and soil runoff and silt interrelatedtothe relationship between the higher the moisture content, early, gradiented, soil and sediment runoff would have required time also shorter.experimental assumed the loess plateau representative loessal soil as experimental object to resolve our sinulatisporites corrasive, promoting agricultural development provides a scientific theory.
第2个回答 2009-06-09
In order to study the pre-rainfall areas of loess soil moisture for different soil surface rainfall infiltration, runoff and the impact of production in Saudi Arabia, the use of outdoor artificial rainfall simulation of the experimental method to explore the different pre-slope under the water and soil runoff and soil sediment characteristics. The results show that: in the rainfall intensity under certain conditions, soil moisture content and topography of the pre-slope and soil sediment runoff and a positive correlation between the volume, pre-water the higher the slope the greater the amount of soil runoff and sediment are also more more than the shorter time required. Experiment with the use of the representation of the Loess Plateau loess soil as a test object,
North China to address soil erosion and promote agricultural development provides a scientific and theoretical basis.