Nutrient management and high-quality-efficiency BF technology for super-high-yield wheat in Anhui province
English
IPNI-2009-CHN-AH18
26 Feb 2012
2011 Annual Interpretive Summary
Balanced Fertilization Strategy for High Wheat Yields in Anhui Province, 2011
Wheat is the main food crop grown in Anhui province with a total sowing area of 2 million ha annually. Anhui’s wheat average yield (3,195 kg/ha) was 18.7% lower than the average yield of the country (3,932 kg/ha). One of the reasons for lower yield is unbalanced fertilization. Field experiments were conducted at Linquan and Mengcheng counties by the Soil and Fertilizer Institute, Anhui Academy of Agricultural Science in 2011 to demonstrate the benefits of balanced fertilization.
Results showed a remarkable response of winter wheat seed yield and profit to balanced fertilization. Wheat yield was 7,216 kg/ha with the optimal treatment (180-75-90 kg/ha of N-P2O5-K2O) while omitting N, P, K, and NPK reduced wheat yields by 19.3%, 9.8%, 9.6% and 30.6%, respectively. Similarly, profits were also reduced by USD 420/ha, 214/ha, 208/ha, and 607/ha, while omitting N, P, K, and NPK, respectively. The researchers recommend 180-75-90 kg/ha as the optimum fertilization rate of N, P2O5 and K2O, respectively, for wheat grown in Anhui province. This optimal rate should increase wheat yield by average 15% over farmers’ common practice. Anhui-18