Hengyang long-term rice green manuring experiment
This experiment has been added by the GLTEN Curators using existing published sources.
- Objective
- To study the effects of green manuring on a double rice system.
- Description
- The paper by Gao Song-Juan describes this experiment as being at Hengyang Red Soil Experimental Station. This seems to be the same location as the Qiyang National Farmland Ecosystem Observation and Research Station (see referenced websites).
- Data Access Statement
- Don't know
- Data license
- Don't know
- Data policy
- Don't know
- Organization
- Hengyang Red Soil Experiment Stationexperimental research station
- People
Site: Qiyang
- Type
- research station field
- Location
- QiyangHunanChina
- Geographic location
- 26.755446, 111.87275
- Elevation
- 150 Metres
- Visits permitted?
- No
- Soil type
- acrisol
- Soil description
- Classified as Ferralic Cambisol on the FAO classification system (FAO 2006). It is a typical red paddy soil of southern China, and originally developed from quaternary red clay.
- Soil properties
Variable Depth Value (range) Units Ref year Estimated? Baseline? soil pH 6.5 soil organic matter 20.1 gram per kilogram total soil nitrogen 0.94 gram per kilogram total soil phosphorous 0.66 gram per kilogram total soil potassium 11.5 gram per kilogram plant available nitrogen 156 milligram per kilogram plant available phosphorous 7.2 milligram per kilogram plant available potassium 176 milligram per kilogram - Climatic type
- humid subtropical climate
- Climate properties
Variable Time period Value (range) Units air temperature 18.3 degree Celsius frost free days 300 precipitation 1250 millimeter
Design period: (1982—)
- Design Type
- Randomized complete block design
- Description
- The experiment has early and late rice crops each year and green manures are incorporated into the soil. The same rates of N, P, and K fertilizer are applied for both early and late rice, at 153 kg N ha-1, 84 kg P2O5 ha-1, and 129 kg K2O ha–1, respectively. Rice straw was removed from the plots after rice harvesting.
- Design description
- Plot size is 2.5 m×15.0 m.
- Crops
Crop Years grown rice winter rapeseed rye grass bare fallow milk vetch - Crop Rotations
- RRV
- 1ricericemilk vetch
RRP- 1ricericewinter rapeseed
RRG- 1ricericerye grass
RRF- 1rice
- 2ricebare fallow
- Factor
- Factor name
- Factor levels
- green manure exposure Green manures are applied as defined by the four rotations.
bare fallow
Control exposurerye grass
milk vetch
winter rapeseed
- Measurement
Variable Material Units Frequency Scale Comment soil properties Soil
Related publications
- Song-juan GAO, Ju-sheng GAO, Wei-dong CAO, Chun-qin ZOU, Jing HUANG, Jin-shun BAI, Fu-gen DOU, 2018. Effects of long-term green manure application on the content and structure of dissolved organic matter in red paddy soil, Journal of Integrative Agriculture, Volume 17, Issue 8, 2018, Pages 1852-1860 https://doi.org/10.1016/S2095-3119(17)61901-4 [In English]