Analysis of published research papers based on experimental data from Luancheng Agro-Ecosystem Experimental Station of Chinese Academy of Sciences Demonstration practices and effects of new agro-technologies developed at Luancheng Agro-Ecosystem Experimental Station of Chinese Academy of Sciences over the last 30 years Effects of Ca and As addition on As, P and Ca uptake by hyperaccumulator Pteris vittata L. under sand culture Histochemical Studies on in Vitro Parthenogenesis in Helianthus annuus L.