套袋对黄冠梨果实Ca 和果胶含量的影响 ①

关军锋1,及华1,冯云霄1,李丽梅1,孙玉龙1,刘立芹1,马文会2

Effects of bagging on content of Ca and pectin in Huangguan pear fruit

GUAN Jun-feng1,JI Hua1,FENG Yun-xiao1,LI Li-mei1,SUN Yu-long1,LIU Li-qin1,MA Wen-hui2

河北农业大学学报 . 2009, (1): 51 -54 .