The Cause of Etiolation of Root Suckers of Chinese Jujube X-ray diffraction and fingerprint establishment of processed product of Haematitum Relationship between Mineral Nutritions, Hormone Content and Flower Bud Differentiation of Juglans sigillata Status of some selected major and trace elements in pasture soil from northeast of the Qinghai-Tibetan Plateau THE ROOT EXUDATION OF GRAIN AMARANTH AND ITS ROLE IN RELEASE OF MINERAL POTASSIUM Effects of oxalate on acid phosphatase adsorption and its activity on soil colloids and minerals Effect of acetic acid on adsorption of acid phosphatase by some soil colloids and clay minerals Adsorption and bound characteristics of soil minerals with Hg Effects of long-term fertilization on the availability of K adsorbed byclay minerals and profile distribution in brown soil The Cause of Etiolation of Root Suckers of Chinese Jujube Preliminary discussion on an overview of ethnic minority use of species of mineral medicine X-ray diffraction and fingerprint establishment of processed product of Haematitum UPTAKE OF POTASSIUM IN SOIL AND MINERAL BY GRAIN AMARANTH (Amaranthus spp.)