福建省前峰硫-多金属矿矿床特征及几个成因问题的讨论

福建省前峰硫 多金属矿的形成具明显的层控特征。矿体赋存于上石碳统─下二叠统船山组及栖霞组灰岩中，成矿作用是多期叠加的、复杂的。在与生物礁有关的沉积阶段，生物吸附提供了主要硫源，后期热液改造对沉积成矿作用有着继承性，区域动力变质热液及其派生的分泌、分异成矿热液，以及与岩浆有关的热液多期次参与矿床的变质改造，而这些热液活动均与政和 大埔深大断裂有关。

DROUGHT-RELIEF ROLE OF MIINERAL FERTILIZER AND ITS APPLICATION

Photosynthesis is well-accepted as a process in which green plants synthesize CO 2 with H 2O into a storable energy with aid of photocatalyzing. However, it can not continue without enough H 2O to match CO 2, eventually lowering in yeild of crops. Application of drought--relief mineral fertilizer to the crops solves properly this problem in that photosynthesis can not only reachs a new equilibrium but synthesized organic substances have a higher abundance than ever due to stronger and longer illumination. This means for sure the crops have a better resistance to drought and hence a higher yeild.