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Spatial Attitude of Lodged Sugarcane Stalk in Field

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  2012 Dallas, Texas, July 29 - August 1, 2012  121341036.(doi:10.13031/2013.42040)
Authors:   Qingting Liu, Jinkan Chen, Yinggang Ou
Keywords:   Lodged sugarcane; spatial forms; Lodging posture; Lodging grade; 3D model

A lot of sugarcane lodged seriously in major producing areas in China, affected by typhoon or strong monsoon wind. Lodged canes usually had some curving sections due to they always grew up toward the sunlight. Harvesting Lodged stalk is necessary for sugarcane harvester. Virtual prototype technology was a useful means in developing farm machine. When studying on the technology of reaping lodged sugarcane by means of virtual prototype technology, it is necessary to create well-formed 3D models of lodged stalks. Straight-stalk lodged canes, which have some certain angles between canes and field ground, usually were used as the models of lodged sugarcane in almost all published papers. The straight-stalk lodged cane model is obviously different from lodged cans with curving sections in field, so it is unsuitable for lodged cans with curving sections. Creating a well-formed model for lodged cane is useful for studying on the technology of reaping lodged stalks by means of virtual prototype technology. This study attempted to provide some basic information for creating lodged cane model by investigating lodged canes in field. The field where the tests were conducted located at Jiuhui Production Team, Fengshou Company in Zhanjiang Guangdong. T-square and tapes were used in measuring. The spatial attitudes of ledged sugarcane stalks in field could be described from the aspects of their spatial forms, lodging posture, and lodging grade, based on the information of field investigation and measurement. Results show that: (1) the spatial forms of lodged sugarcane were straight-stalk or stalk with single, double, or multi curving sections; (2) the lodging posture of stalks were longitudinal, cross, or side direction lodging; (3) lodging grade of stalk were divided into slightly, moderately, or severely lodging three classes; (4) the spatial attitudes of lodging sugarcane in field were described as straight-stalk or stalk with single, double, or multi curving sections lodged in longitudinal, cross, or side direction with slightly, moderate, or severely lodging. A model of cane with two curving sections which seriously lodged in cross direction was created in the paper as an instance. The results are useful for creating well-formed lodged sugarcane virtual prototype model.

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