该产品含有大量固氮、解磷、解钾菌，有多种活性有益微生物及多种矿物质微量元素（腐殖质、基质转化物、细菌分泌物、代谢物等）主要有６个方面的特点和作用：１．固氮、解磷、解钾：壮园肥中每克含３亿以上的固氮菌、解磷菌、解钾菌。它们能将土壤中化肥及其它肥料中无效的磷 The product contains a large number of nitrogen fixation, phosphate, potassium bacteria, a variety of active beneficial microorganisms and a variety of minerals trace elements (humus, matrix transformants, bacterial secretions, metabolites, etc.) There are six main characteristics and role : 1. Nitrogen fixation, phosphate, potassium: Zhuangyuan fertilizer containing more than 300 million per gram of nitrogen-fixing bacteria, phosphate-solubilizing bacteria, potassium-dissolving bacteria. They can invalidate phosphorus in fertilizers and other fertilizers in the soil