Effects of the gradually decreasing low temperature stress on the chloroplast membrane related indexes in cucumber seedling(渐降低温胁迫对黄瓜幼苗叶绿体膜相关指标的影响)... oleh ZHENGShan-shan(郑姗姗), LIDan(李丹), JIANGXin-mei(蒋欣梅), YUXi-hong(于锡宏), YUGuang-jian(于广建), YANChong(燕冲)