In-situ microecological remediation of nitrate-contaminated groundwater in the Hebei plain, China;

Tectonic combined characteristics of Hebei Plain and coal prospecting;

Estimation of Eco-environmental Water Demand in Hebei Plain;

The abroad appearances of the Hebei plain ground fissures have done harm to the subaerial buildings, the subterranean engineering of pipeline, the establishment of irrigation works and the cropland and road to a certain extent.

In this paper, 17 soil fertility evaluation indexes were selected from the primary 25 factors using principal component analysis, by sampling and laboratory analysis to soil and vegetables in typical vegetable-based of Hebei Plain.

Based on research with 4 wheat varieties of different types,the impact trend of different spring irrigations on the yield of winter wheat in Hebei low plain was studied.

Based on research with 4 different wheat varieties,the influence trend of different spring irrigations on winter wheat yield in Hebei low plain was studied.

In order to take full advantage of the agro-climatic resource,and to develop the wheat cultivation and management programs in Hebei low plain,the correlation analysis and path analysis of average winter wheat yield and weather data from 1976 to 2006 in Hengshui were carried out.

Dynamic changes of nitrogen in precipitation in lower reach of Liaohe River Plain;

Effects of water and nutrient interaction on maize yields in lower reach of Liaohe River Plain;

Nitrous oxide and methane emissions from different agricultural fields during freezing and thawing periods in the lower reaches of Liaohe Plain.;

Carbon fluxes from a non-cropping paddy field in the Lower Reaches of Liaohe Plain;