Nutrient Management Strategies for Sichuan

IPNI-1999-CHN-SC18

Nutrient Management Strategies for Wheat-Rice Systems in Sichuan, 2010 The monitored village at Chongzhou County of Sichuan Province continued to study nutrient management and crop responses in its wheat-rice system. This is the seventh and final year of this project. The results showed that N was still most limiting for wheat and rice. Wheat yield of the N omission plot dropped to only 55% of the optimal treatment. Read more


Year of initiation:1999
Year of completion:2010

Interpretive Summary

Nutrient Management Strategies for Wheat-Rice Systems in Sichuan, 2010 The monitored village at Chongzhou County of Sichuan Province continued to study nutrient management and crop responses in its wheat-rice system. This is the seventh and final year of this project. The results showed that N was still most limiting for wheat and rice. Wheat yield of the N omission plot dropped to only 55% of the optimal treatment.

Nutrient Management Strategies for Wheat-Corn and Wheat-Rice Systems in Sichuan, 2009 Two on-going monitored village sites continued their study of nutrient management and crop responses in a wheat-corn system at Jianyang and a wheat-rice system at Chongzhou, both in Sichuan Province. At Jianyang, crop responses to added nutrients were similar to previous years. Nitrogen was still the most limiting nutrient for both wheat and corn.

Nutrient Management Strategies for Wheat-Corn and Wheat-Rice Systems in Sichuan, 2008 Two ongoing monitored village projects continued their study of nutrient management and crop responses in a wheat-corn system at Jianyang and a wheat-rice system at Chongzhou. At Jianyang, N was still most limiting for both wheat and corn. Compared to the optimal (OPT) treatment, wheat yield reductions were highest with N omission at 2.

Nutrient Management Strategies for Wheat-Corn and Wheat-Rice Systems in Sichuan, 2007 Two monitored villages, set up in 2001, have been employed to study the wheat-corn system at Jianyang and the wheat-rice system at Chongzhou. Soil nutrient limitations were identified, nutrient variability maps were developed, and nutrient deficiencies were verified in the past. In 2005/07, the project continued to track crop response to application of fixed fertilizer rates over time.

Nutrient Management Strategies for Wheat-Corn and Wheat-Rice Systems in Sichuan, 2006 Two monitored villages were established in 2001 to study the wheat-corn system at Jianyang and the wheat-rice system at Chongzhou. In past field studies, soil nutrient limitations were identified, nutrient variability maps were developed, and nutrient deficiencies were verified. In 2005 and 2006, the project continued to track the crop response to fixed fertilizer application rates.

Nutrient Management Strategies for Wheat-Corn and Wheat-Rice Systems in Sichuan, 2005 Two monitored villages were established in 2001 to study the wheat-corn system at Jianyang and the wheat-rice system at Zhouzhou. In past field studies, soil nutrient limitations were identified, nutrient variability maps were developed, and nutrient deficiencies were verified.

Nutrient Management Strategies for Sichuan, 2004 This third year of field trials continued the process of verifying soil nutrient limitations for two monitored villages. All years have provided crop-specific examples of nutrient limitations. In the wheat-corn rotation system at Jianyang, nitrogen (N) continues to be most limiting for wheat, followed by phosphorus (P) and manganese (Mn). In corn, N, P, and potassium (K) were the three most yield-limiting nutrients.

Nutrient Management Strategies for Sichuan, 2003 Soil nutrient limitations in two monitored villages were identified through soil testing in 2000/01 and results were subsequently digitized as nutrient variability maps in 2002. Verification of these nutrient deficiencies was conducted via field trials in 2002 and 2003. Field studies showed crop-specific nutrient limitations.

Nutrient Management Strategies for Sichuan, 2002 Initiated in 2000, the objective of the study is to track soil fertility variability and collect information from field trials and fertilizer use surveys. Two monitored villages were established to represent typical conditions for a wheat-corn/sweet potato in an upland cropping system as well as a wheat/rapeseed-rice paddy system.

Nutrient management strategies in Sichuan province, 2001 The monitored villages in Jianyang and Chongzhou counties, Sichuan, also track soil fertility variability and provide information from both field trials and fertilizer use surveys. As part of a national effort, this project is accumulating the data necessary to construct a soil nutrient management system capable of aiding in the formulation of balanced fertilization programs for high yield and high profit agriculture.

Nutrient management strategies project in Sichuan province, 1999 Effects of balanced fertilizers on yield and quality of four vegetables were evaluated in field trials. The balanced fertilizers vs. farmers’ practice increased yield of lettuce by 3787 kg/ha or 21. 4%, cabbage by 12925kg/ha or 27. 7%, garlic bulbs by 709 kg/ha or 19. 0%, and eggplant by 1750 kg/ha or 28. 2%. The balanced NPK fertilizers plus Ca or aglime could further increase the yields of the four vegetables from 9. 0% to 20%.

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Updates & Reports

2005

Published Articles

2001

Effect of K and Ca on caulifower growth


Project Leader

Feng Wenqiang, Soil and Fertilizer Institute Sichuan Academy of Agricultural Sciences


Project Cooperators

Qin Yucheng


IPNI Staff

Shihua Tu


Location

Asia \ Eastern Asia \ CHN \ Sichuan


Topics

4r rate, balanced nutrition

rice, wheat

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