Effects of Controlled-release Bulk Blending Fertilizer on Wheat Yield of Different Varieties under Various Soil Basic Fertility

In order to explore a fertilization scheme that can adapt different soil fertility conditions and wheat varieties, two kinds of controlled-release ureas with release periods (60 days (CRU-60 d) 90 (CRU-90 d)) blending ordinary urea were applied in proportions at three sites evaluate the impacts bulk fertilizer (CRBBF) on NO3–N, NH4+-N contents dynamic change tillers, SPAD value, grain yield components. The results indicated applying CRBBF could increase contents, tiller numbers, leaf areas, values yield. Compared local farmers’ habitual treatment, application presented higher inorganic N content, more spikes grains per spike. This study has important guiding significance for one-time provides an effective way alleviate non-point source pollution caused by excessive fertilization.