Risk Assessment Method of Cold Damage to Florescence of Dangshan Crisp Pear in Old Course of the Yellow River Studies on Content and Correlation of Souble Sugar and Starch between Branches and Roots in 'Huanghua' Pear Trees 黄河故道砀山酥梨花期低温冷害风险的评估方法初探黄花梨根与枝中可溶性糖及淀粉含量相关性研究
The organic substance and nutrients in the Pear River Estuary Waters ( not including Shenzhen Bay) were mainly provided by the input from the Pear River, while the coastal sewage discharge was the main source of that in Shenzhen Bay. 珠江东四口门水域(不含深圳湾)的有机污染物和营养盐主要来源于径流携带,深圳湾水域更主要来源于沿岸排污;