关键词: 棉花; 株式图; 数字化; 成铃概率; 脱落概率

Abstract: [Objective] To develop a method for digitization of cotton plant mapping information, to obtain spatiotemporal distribution characteristics, and to validate the method. [Method] First, the information for cotton plant mapping was stored in Excel in the standardized prescriptive digital form. Second, Visual Basic was used to import the standardized digital data and calculate the probability of each reproductive organ at different fruiting positions of every fruit branch. Simultaneously, statistical results were exported in Excel and graph formats. Finally, Surfer software was used to draw the probability distribution map for cotton reproductive organs. To validate the method it was used to analyze plant mapping information of 10 cultivars (strains). [Results] Automatic processing of plant mapping information was realized. We rapidly mapped the spatial distribution of the squares probability for all cultivars at the squaring stage, the reproductive organs occurrence and shedding probability at the mid-flowering and boll setting stage and boll probability at the boll-opening stage. The spatiotemporal distributions accurately, clearly, and intuitively described the distribution characteristics of squares, flowers, and bolls at different growth stages, respectively. Furthermore, on the basis of statistical analysis of the digitized plant mapping information, variation in probability of boll development at different fruiting positions of each fruit branch was observed. [Conclusion] The method is suitable to map rapidly the spatiotemporal distribution of the reproductive organs indifferent fruiting positions of a cotton plant.

Key words: cotton; plant mapping; digitization; boll probability; shedding probability