知识贝壳
知识贝壳
所属栏目：英汉烟草科技
a. ChlorophyllThe plastid pigments in relation to the physiological age of the leafaccording to stalk position was examined. Concentration of chlorophyllwas approximately the same at all stalk positions in a virescent line. Influe-cured tobacco,chlorophyl ......（本文共 3706 字 ） [阅读本文] >>