Nutrient management and high-quality-efficiency BF technology for super-high-yield wheat in Anhui province
English
IPNI-2009-CHN-AH18
14 Feb 2011
2010 Annual Interpretive Summary
Nutrient Management and Balanced Fertilization Technology for Super High Yielding Wheat Cultivation in Anhui, 2010
Wheat is one of the important grain crops in Anhui, with a total area of over 2 million ha. Wheat yield in Anhui is lower than the national average because of both poor nutrient management and an unfavorable climate. The Soil and Fertilizer Institute, Anhui Academy of Agricultural Science, established this project in 2008 to provide better nutrient management strategy for local farmers.
In 2009-2010, 10 winter wheat NPK fertilization field trials were set in Linquan, Feixi, Changfeng, and Mengcheng counties of Anhui. All results indicated that balanced fertilization could improve winter wheat yields and associated economic benefits compared with common practice. In Linquan County, the optimum fertilization treatment was 180-75-90 kg N-P2O5-K2O/ha, which produced 7,100 kg/ha or 680 kg/ha (+9.6%) and USD 202/ha more than the common practice of applying 180-75-0 kg/ha. In Changfeng County, the optimum fertilization treatment was 180-90-90 kg/ha. Average yield was 5,271 kg/ha, which was 516 kg/ha (+9.8%) above common practice (180-90-0) and generated an additional USD 153/ha. In Feixi County, different N fertilization timing strategies indicated that it was best to supply 60% basally, 20% during the elongation period, and 20% at heading. This strategy produced 4,843 kg/ha or 1,043 kg/ha (+21.5%) more than common practice, which applied all fertilizers basally. Nitrogen use efficiency increased from 19.7% under common practice to 38.6% under this most optimal fertilization strategy Anhui-18