Nutrient management and high-quality-efficiency BF technology for super-high-yield wheat in Anhui province
English
IPNI-2009-CHN-AH18
24 Feb 2010
2009 Annual Interpretive Summary
Nutrient Management and Balanced Fertilization Technology for Super-High-Yielding Wheat in Anhui, 2009
Anhui is one of the five largest winter wheat producing provinces in China. However, the average winter wheat yield is 3,195 kg/ha, which is 80% of the national average. Low yields are blamed on poor fertilization practices and this project is re-evaluating NPK fertilization throughout the province.
Field plots testing N, P, and K rates determined a common optimum (OPT) treatment of 180-75-90 kg N-P2O5-K2O/ha. Paddy soil in the Jianghuai hilly region was more responsive to K than the calcareous black soil of the Huaibei plain region. Field experiments of winter wheat in Linquan and Feixi Counties showed large yield responses and economic benefits to balanced applications of N, P, and K. In Linquan, the optimum (OPT) treatment of 180-75-90 kg N-P2O5-K2O/ha produced 6,836 kg/ha, which was 22.1%, 10.5%, 9.4%, and 25.0% over plots omitting N, P, K, and the farmers NPK fertilization, respectively. However, wheat yield under an OPT+15 kg Zn/ha treatment was 10% higher (7,532 kg/ha). Anhui-18