甘薯收获环节损失率测算及影响因素分析.

【Objective】 The study aimed to estimate the harvest loss rate of sweet potato, explore its influencing factors and offer proposes on reducing the loss. 【Method】 This paper measured the loss of sweet potato harvest in Sichuan and Henan, China, using a combination of field survey, questionnaire survey and empirical research. 237 rural households from the Rural Fixed Observation Point of the Ministry of Agriculture were included in the questionnaire survey.【Result】 The loss rate of manual harvest was 2.28 %, the loss rate of mechanical harvest was 4.94 %, and the comprehensive loss rate was 2.97 %, while the manual harvest loss rate estimated by farmers was 4.7 %. At the same time, the results showed that sweet potato varieties, harvesting models, harvesting methods, harvesting time, soil type, farmers’ age, education level, total annual household income, pest level, whether planting in the next season after harvest and whether intercropping, had a great effect on sweet potato harvest losses. 【Conclusion】 Therefore, this paper suggests that farmers should adjust the depth of operation according to different varieties and topography and choose the appropriate type of machine. Besides, the government should promote the knowledge of reducing the loss of sweet potato harvest to farmers. [ABSTRACT FROM AUTHOR]