Studies on the soil nutrient limiting factors in east Sichuan province

IPNI-1995-CHN-SC11

Greenhouse survey studies for four Sichuan soils, 1995 Four soils (two acidic, two neutral) which were problematic regarding earlier nutrient response trials in Sichuan province are being re-evaluated for yield responses to each plant nutrient. Results to date indicate that the acidic soils require higher nutrient inputs than the neutral soils. Acidic soils responded positively to N, P, K and Mg whereas additions of S, Mn and Zn reduced yields. Read more


Year of initiation:1995
Year of completion:2000

Interpretive Summary

1995

Greenhouse survey studies for four Sichuan soils, 1995 Four soils (two acidic, two neutral) which were problematic regarding earlier nutrient response trials in Sichuan province are being re-evaluated for yield responses to each plant nutrient. Results to date indicate that the acidic soils require higher nutrient inputs than the neutral soils. Acidic soils responded positively to N, P, K and Mg whereas additions of S, Mn and Zn reduced yields.

1998

Studies on the soil nutrient limiting factors in east Sichuan province, 1998 A systematic study of the soil nutrient limiting factors in east Sichuan province (now part of Chongqing) has indicated that most soils are deficient in P, N, Zn, Mg, B, and K. As an example, the +P treatment increased corn and potato yields by 23. 5 and 25. 4 percent, respectively. Optimum P application rates were determined to be 105 kin/ha for corn and 60 kg/ha potato.



Project Leader

He Tianxiu, Southwest Agricultural University


Project Cooperators

None


IPNI Staff

Shihua Tu


Location

Asia \ Eastern Asia \ CHN \ Sichuan


Topics

4r rate, balanced nutrition

grain crop

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