new type fertilizer 第1页

Effect and mechanism of organic-inorganic compound fertilization on chemical fertilizer utilizationI. Effect of urea compounded with organic material on maize yield and fertilizer utilization mmonia volatilization characteristics of different kinds of high-nitrogen compound fertilizers and their effects on nitrogen balance Study on the enhancement and mechanism of organic-inorganic compound fertilization on inorganic fertilizer utilization II. Effects of ammonium phosphate combined with organic material on