PHn.[化]酸碱度(=Potential Of Hydrogen)abbr.公共卫生(=Public Health)abbr.紫心勋章(=Purple Heart)Photedesn.亮夜蛾属

1. The phosphorus fertilizer and farmyard manure had the best effects on maize yield in Drab Fluvo-aquic soil.
   相关分析表明，在褐潮土上增施磷肥和有机肥对提高玉米产量具有重要的作用。
2. Phosphorus is an important nutrient for animals and plants, the phosphorus level in soil determines the effect of phosphatic fertilizer.
   摘要磷是动植物生命活动离不开的重要营养元素，土壤的供磷水平是决定磷肥肥效的主要因素。