เครื่องดำนาขนาดเล็กแบบเดินตามสำหรับปักดำต้นกล้าข้าวแบบล้างราก ในการปลูกข้าวนาน้ำฝน (SMALL WALKING TYPE RICE TRANSPLANTER WITH ROOT-WASHED SEEDLING FOR RAINED RICE)

Abstract

This study aims to fabrication and testing a small rice transplanter with 2 row for root-washed seedling. The space between rice rows and hills are 30 and 25 cm, respectively. The experiment of the small rice transplanter process is performed as follows; preparing the rice field with 400 m². Then preparing the seedling of rice-RD6 aged 25, 30, and 35 days. The speed of planting is 30, 45, and 60 rpm respectively. The planting experiment is recorded according to the depth, number of seedlings in each hill, slipping, missing hills planting, working rate, field efficacy, and fuel consumption. The result has shown that the transplanting depth about 5 cm by planted 3 seedling/hill, slipping were 4.62-7.31%, missing hills planting was 4.40-5.23 %. The 30 day of seedling aged is suitable for the small rice transplanter. The 30 rpm of transplanting speed is the lowest rate in missing rice planting in each hill. The working rate is 2.34 Rai/day. The fuel consumption rate were 2.85-3.12 L/rai. To compare with the manual, the small rice transplanter is able to plant 8 times faster than human workforce. In addition the yield received has no difference but the cost is less than the man labor performance, which the cost saving is about 954 Baht/rai.