the relationship between winter temperature rise and soil

The Relationship Between Winter Temperature Rise and Soil Fertility PropertiesXiao guoju, Zhang Qiang, Bi Jiangtao, Zhang Fengju and Luo chengke Bioengineering institute of ningxia University, Yinchuan, ningxia hui Autonomous Region 750021, china. 2institute of Arid Meteorology, china Meteorological Administration, gansu Key Laboratory of Arid climate changes and Disaster Reduction, Lanzhou, gansu Province 730020, china. corresponding author email: xiaoguoju@hotmail.com

Introduction

Climatic Warming Mineralization rate

effect

Microbial decomposer

Soil Fertility

Quality of cultivated land

Soil moisture

Soil salinity and Salinization

Acid soil or Alkaline soil

effect

Growth:winter crops Sprouting:spring crops

Materials and Methods

Survey data in 2009

209600 ha2,096,000,000

49.7% of cultivated land in Ningxia plain

General situation of the test base

Lack of rain

Abundant sunshine Strong evaporation Much of wind and sand

annual average temperature of 9.1 ˚C

annual average rainfall of 185 mm

Materials and MethodsExperimental design

0, 0.5, 1, 1.5, 2 °C

Divided into 15 pots 2m wide and 3m long and 3m for spacing

2 infrared radiators tube 1.2m above the

ground

2m

3m

Materials and MethodsTemperature monitoring

Automatic temperature detector Monitored and recordedTemperature error ±0.1˚C

Take soil sample to measure soil catalase, urease,

phosphatasesoil organic matter(N,P,K), pH,

salt

the soil organic matter was 7.15g/kg total N was 0.15 g/kgtotal P was 0.15 g/kgavailable N was 5.6 g/kg available P was 6.6 g/kg available K was 365.1 g/kgsoil pH was 9.2 total salt was 2.8 g/kg

Materials and MethodsDetermination method

Catalase soil activity : Phosphate activity : disodium phenyl phosphate colorimetry

Urease activity : diffusion layer titration Soil organic matter, available N,P,K, pH and total salt using soil

test kit

Results and AnalysisSoil microbial activity

Results and AnalysisSoil microbial activity

Results and AnalysisSoil microbial activity

Results and AnalysisSoil nutrient

Results and AnalysisSoil nutrient

Results and AnalysisSoil nutrient

Results and AnalysisSoil nutrient

Results and AnalysisSoil pH

Results and AnalysisTotal soil

Conclusions

Total salt 0.39-0.50g/kg

Catalase 0.08-1.20mL/g

Urease 0.004-0.019mg/g

Available N 2.45-4.66g/kg

Phosphatase 0.10-0.25mg/kg Soil pH 0.42-0.67

Available P 2.92-5.74g/kg

Soil organic matter 0.01-0.62g/kg

Temperature 0.5-2.0˚C

cause

Reference • http://www.la-press.com/the-relationship-between-winter-

temperature-rise-and-soil-fertili-article-a2988&sa=U&ved=0ahUKEwiZhMuQlLrJAhXUxY4KHcYiDBMQFggHMAE&client=internal-uds-cse&usg=AFQjCNHtiPpF_pywuo9-8wVRh53oWvJxKg

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