Use soil information system for rice nitrogen decisions in Dafeng city in Jiangsu province as an example, Journal of Nanjing agricultural university, issue.3, pp.53-56, 2000. ,
The variable fertilization operating systems design and implementation based on prescription figure, Journal of Jiangsu university, vol.30, issue.4, pp.338-342, 2009. ,
The GPS variables fertilization system to CPLD control modules design, J]. Farm machinery research, issue.3, pp.83-86, 2008. ,
Study on electro-hydraulic drive type variable fertilization closed-loop control system, pp.25-272, 2009. ,
Variable precision agriculture fertilizer technology and its research progress, p.335, 2007. ,