Nutrient management and balanced fertilization on main crops in Qinghai province

IPNI-2006-CHN-QH5

Nutrient Management and Balanced Fertilization in Qinghai, 2009 In 2009, experiments in Qinghai were mainly focused on finding the yield-limiting nutrient factors for spring wheat, rapeseed, rainfed potato, and forage grass in Xi’ning City, Huzhu County, and Chengduo County. In spring wheat grown at Xining, N was the main nutrient limitation. Application of 150 kg N/ha produced 38% more grain yield compared to the N omission plot supplied with 90 kg P2O5/ha and 135 kg K2O/ha. Read more


Year of initiation:2006
Year of completion:2010

Interpretive Summary

Nutrient Management and Balanced Fertilization in Qinghai, 2009 In 2009, experiments in Qinghai were mainly focused on finding the yield-limiting nutrient factors for spring wheat, rapeseed, rainfed potato, and forage grass in Xi’ning City, Huzhu County, and Chengduo County. In spring wheat grown at Xining, N was the main nutrient limitation. Application of 150 kg N/ha produced 38% more grain yield compared to the N omission plot supplied with 90 kg P2O5/ha and 135 kg K2O/ha.

Nutrient Management and Balanced Fertilization in Qinghai, 2008 In 2008, work mainly focused on nutrient management and balanced N, P, and K fertilization studies in important crops in Xi’ning City, Huzhu County, and Huangzhong County of Qinghai Province. The main cash crops included rapeseed, potato, and rainfed faba bean. The main forage crop in Qinghai is oats. An irrigated potato trial in Xi’ning found 150-60-135 kg N-P2O5-K2O/ha to be the most profitable NPK treatment.

Nutrient Management and Balanced Fertilization in Qinghai, 2007 In 2007, work focused on nutrient management and balanced fertilization studies in potato, rapeseed, horsebean, and vegetables in Xining City and Huzhu and Ledu Counties. Field demonstrations and farmer training were also carried out.

Nutrient Management and Balanced Fertilization in Qinghai, 2006 In 2006, work mainly focused on evaluating nutrient management through balanced fertilization of potato, rapeseed, horsebean, and vegetables in Huzhu and Ledu counties. In Huzhu, 125-75-135 kg N-P2O5-K2O/ha increased rapeseed yield by 37% compared with the zero fertilizer check and increased farm income by US$292/ha.

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Project Leader

Zhanquan Chen, Soil and Fertilizer Institute, Qinghai Academy of Agriculture and Forestry


Project Cooperators

Yuemei Li
Yali Zhang
Xusheng Gao


IPNI Staff

S. Li


Location

Asia \ Eastern Asia \ CHN \ Qinghai


Topics

nutrient management

faba bean, onion, potato, radish, vegetable, wheat

Nitrogen (N), Phosphorus (P), Potassium (K)