1. College of Agronomy and Biotechnology Key Laboratory of Farming System, Ministry of Agriculture and Rural Affairs of China China Agricultural University Beijing China
2. Tillage and Cultivation Research Institute Liaoning Academy of Agricultural Sciences Shenyang China
3. Institute of Crop Tillage and Cultivation Heilongjiang Academy of Agricultural Sciences Harbin China
4. School of Agriculture and Food Sciences The University of Queensland St Lucia Qld Australia