Finally , the means of how to take the form of map to describe the models depending on gis software was given in this paper . to explore and verify the operation and correction of the system , the author selected the typical luancheng county in the plain region as a demonstration . according to the concrete situation of luancheng county , the author judged the market system growth perfect 本文以河北平原区有代表性的栾城县为实证,针对该县实际情况,通过综合评价得出栾城县集贸市场发育程度为健全型,其集贸市场可划分为四级,一级市场为城关镇市场;二级市场有:冶河、西营等6个:三级市场有:南郄马、南高等9个:四级市场有:于底、城郎、范台等13个。
The results showed that it was benefit for the root system and nodule growth of faba bean on squaring stage and blooming stage under phosphorus and phosphorus add potassium fertilizer ; the benefit was not significant for the root system and nodule growth of faba bean in all stage under potassium fertilizer ; nitrogenous add phosphorus add potassium fertilizer was benefit for the root system growth , but it restrained to the nodule growth of faba bean on squaring stage and blooming stage 结果表明:单施磷肥和磷钾肥配施在现蕾期和开花期对根系和根瘤生长均有较好的促进作用;单施钾肥在各个时期对根系和根瘤生长的促进作用不大;氮磷钾肥配施对根系生长较好,但在现蕾期和开花期对根瘤生长有抑制作用。