TY - Front. Agric. China A1 - Meiqiu ZHU, Ying WANG, Bingxiang LIU, Lili ZHANG, Hui WANG, Yuxin YUAN, Kejiu DU T1 - Effects of aqueous leaf extracts of P. at different ages on the growth and photosynthetic characteristics Y1 - 2009-06-05 JF - Frontiers of Agriculture in China JO - Front. Agric. China SP - 178 EP - 185 VL - 3 IS - 2 UR - https://academic.hep.com.cn/fag N1 - 10.1007/s11703-009-0031-0 ER -