Considering of the accuracy and efficiency of afforestation operation design,this paper designs and implements the software system afforestation operation design based on PDA to improve the accuracy and efficiency of the investigating data collection for afforestation operation design and to enhance decision-making capacity for designer.

Firstly,this paper puts forward a five-component method in assignment design for disciplinary courses.

Currently,there exist popular problems in tending and cutting of artificial forest including uneven stand density,different cutting intensities,disconnection of operational design and actual situation,delayed stand tending,overdue bills and etc.

NET or BV on Arc-Engine and SQL-Server system and the key techniques and characteristics of some modules,such as aided operational design,project check and audit by time series,ec.

Making use of the promising data handle functions of EXCEL, taking field survey data of Conversion of Arable Land back to Forests as foundation, by creating the template, we can make the computer automatically fill up the contents of operational design, budget estimation and gather of the investment and the using worker.

Under times of information age, how to let information technology tool promote homework design, how to cultivate student participate in learning initiatively? In terms of weak point of traditional homework field, The autnorput forward the new homework design principle------"independently participatingdesign on homework".