控失肥与常规化肥对夏玉米产量与养分积累影响研究

Experiments were conducted at the Xinji experimental station of Agricultural University of Hebei in 2015. The effects of controlled loss and ordinary fertilizer on accumulation of dry matter, accumulation of nitrogen, phosphorus and potassium, nutrient uptake efficiency and yield of maize were studied using maize hybrid Zhengdan 958 as material. The results showed that with the same nutrient amount (N 144 kg/ha, P2O5 72kg/ha, K2O 72 kg/ha) of controlled-loss and ordinary fertilizer applied, There were significant differences on maize yield, dry matter accumulation and nutrition accumulation, and the effect of controlled loss fertilizer treatment was significantly better than that of ordinary fertilizer. Compared with ordinary fertilizer, the 1000 grain weight, dry matter and yield of maize of controlled loss fertilizer could be increased by 12.3%, 12.8% and 6.9%, respectively. The content of nutrient elements in organs of controlled loss fertilizer treatment was higher than that of the ordinary fertilizer. Nutrient uptake efficiency and partial productivity were significantly higher than that of contrast fertilizer. As a new type of fertilizer,controlled loss fertilizer will play an important role in improving the yield of maize, increasing the efficiency of fertilization and protecting the environment.