The Optimum Design Method And Tests Of A Scallion Transplanter With Two Flexible Metal Disks

Scallion. has become one of cash crops of regional scale planting for many years in China. Unfortunately, because scallion is planted with a small spacing between seedlings, all kinds of available transplanters made in domestic can not be used for transplanting scallion, so up to now scallion planting has to be planted by manual tools.Based on the analysis of the kinetic track of the scallion during planting, basic relationships'among the characteristic parameters of the transplanter with two flexible metal disks, including the velocity of the transplanter, the rate of transplanting, the spacing between seedlings, the angle of releasing seedlings, the diameter and length of seedlings, have been set up in this paper, and then a mathematic model of optimum design for the transplanter with the final planting angle of seedlings (y=90 ) has been formulated and solved with good results.According to the optimum solutions, a new type of transplanter with two flexible metal disks has been developed and the field tests of the transplanter have been conducted. The results not only indicate that the transplanter can plant scallion with small space, and meet the requirements of the scallion practical planting, but also demonstrate that the optimum design method of the transplanter is correct and useful.The research results of this kind of transplanter in the paper are very important for the design and application in field practice.