Among agriculture measures of high efficient water utilization, straw mulching technique has been used widely in Hebei plain, but the research on mulching quantity was few and on the primary stage.
在农业高效用水一系列农艺措施中，秸秆覆盖技术在河北平原应用较广，但关于覆盖量的研究较少。
The high concentration of fluorine anion in groundwater is determined by the Pleistocene sedimentary environment in east Hebei plain.
河北平原东部第四纪更新世沉积环境决定本区地下水为氟离子富集区。
The high concentration of fluorine anion in groundwater is determined by the Pleistocene sedimentary environment in east Hebei plain.
河北平原东部第四纪更新世沉积环境决定本区地下水为氟离子富集区。
应用推荐