Micro-morphological Features of Topsoil under Long-term Cultivation of Grain and Cotton Crops in Northwestern Shandong

This study aimed to provide a basis for the rational improvement of the microstructure of the soil that had been planted with crops for a long time. Conventional and micro-morphological methods were used to study the effects of planting grain and cotton crops on soil properties in Gaotang County,Shandong Province. The results showed that long-term cultivation of grain and cotton crops has a significant impact on soil micro-structure. The top soil( 0-10 cm) of wheat-maize field has higher organic matter content,uniform aggregate size,high separation,and strong packing void connectivity,forming a type micro-structure that is conducive to agricultural production. The characteristics of soil matrix are mainly inherited from soil parent materials,and the impact of crop cultivation on soil matrix is very weak. The amount of formations in the soil is less,and only Fe nodules,Mn nodules and excrement are observed.

鲁西北平原长期种植粮棉作物耕层土壤的微形态特征

为合理改善长期种植农作物土壤的微结构提供依据,采用常规与微形态学方法研究山东省高唐县种植粮棉作物对土壤性质的影响。结果表明:粮棉作物长期种植对土壤微结构影响明显,其中,麦-玉地块0~10cm土层有机质含量较高,团聚体大小均一、分离度高,堆集性孔隙连通性强,形成了有利于农业生产微结构类型;土壤基质特征主要继承自成土母质,作物种植影响很弱;土壤形成物数量很少,仅发现铁锰凝团、排泄物。

山东省高唐县地热资源评价及开发利用方案探讨

对高唐地区地热资源地质背景、区域水文地质特征、热储地质特征进行综合研究与分析,并对该区馆陶组热储层地热资源量及地热水资源量进行初步估算,为地热资源的合理开发利用提出有效、科学的合理井距及布井数目。

高唐县食品加工企业绿色食品认证存在的问题及对策

本文分析了高唐县食品加工企业在绿色食品认证过程中存在的问题,并提出了一系列针对性的解决对策,以期帮助企业顺利获得绿色食品认证。