Abstract
The method of returning banana (Musa nana) pseudostems to the field can effectively maintain and improve the level of organic matter in the soil. In this article, we show that a small vertical-type banana pseudostem chopper can be used in banana plantations that do not need to be replanted. The aim of this study was to investigate the relationship among the blade type, cutting force, and cutting power. The effects of the blade roll angles, pitch angles, and feeding angles on the crushing qualification rate and crushing efficiency were obtained by comparing the decomposition characteristics of a banana pseudostem before and after crushing. The results showed that the arc-shaped blade exhibited the smallest cutting force and cutting power consumption. The maximum crush qualification rate and crush efficiency were obtained when the roll angle was 12°, the pitch angle was −5°, and the feeding angle was 5°. The weight reduction rate and average decomposition rate of the crushed pseudostem were 2.73 and 3.61 times greater than those of natural decomposition, respectively. The results can be used as a reference for the design and optimization of banana pseudostem choppers.
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