Abstract: In response to the problem that the existing potato (Solanum tuberosum L.) harvesting machine didn’t have seedling killing function, a potato seedling killing and harvesting integrated machine was developed by integrating mechanized seedling killing and harvesting. The machine consisted of devices for seedling killing, excavation, separation and transportation, transmission, lifting, and collection. The structural parameters of key components were determined through theoretical analysis, and field experiments were conducted using the machine. The results showed that the potato harvesting loss rate was 3.9%, the potato damage rate was 1.9%, and the qualified rate of broken stem and leaf length was 90%. All performance indicators met the agricultural standards for potato mechanized seedling killing and harvesting, and could solve problems such as high harvesting costs, high labor intensity, and tedious mechanized operations.

Key words: potato (Solanum tuberosum L.), harvesting, seedling killing, integrated machine, development, field experiment