Project Name: Integrated Technology of Sprinkling Irrigation and Precision Irrigation

Project Owner: Institute of Geographic Sciences and Natural Resources Research, CAS

Project Profile: The research has lasted for more than 17 years. Through long-term, systematic, continuous experimental study, it was found that the maximum canopy interception value of winter wheat was about 1 mm, which can be ignored. It was discovered that the air humidity in sprinkler-irrigated fields were higher than that in surface-irrigated fields during the whole growing season of winter wheat, whereas the air temperature and farmland evaporation were lower. And under sprinkler irrigation, the ineffective tillers decreased, the activity of the key photosynthesis enzymes (Rubisco) and the chlorophyll content increased, and resulted in yield, water and fertilizer consumption efficiency increased compared to those under surface irrigation. A model for estimating water consumption of winter wheat under sprinkler irrigation condition based on 20 cm standard pan placing on the top of crop canopy was developed and a simple and practical method of sprinkle irrigation schedule was established. Besides, the relationship between the reduced air temperature near the canopy and air temperature, air relative humidity and wind speed under microscale sprinkler was established and a new method to adjust the microclimate of sprinkle irrigation farmland through microscale irrigation was proposed. The technology is international self-contained with simple and accurate method, low cost, and sound effects advantages. The application shows that more than 30% water can be saved, and more than 10% yield can be increased.

Contact Person: Wan Shuqin

Phone Number: 13661058296  010-64889586

E-mail: wansq@igsnrr.ac.cn