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对油菜钵苗茎秆进行物理机械特性试验,测定不同苗龄下油菜钵苗茎粗及苗高,对不同苗龄的油菜钵苗进行拔苗试验,茎秆挤压、拉断试验。研究表明:湘杂1613的油菜钵苗在同一时间段内,茎粗与苗叶高度大致成正态分布;油菜钵苗拔苗力随拔苗位置的上升而增加,随拔苗倾角的增加呈现先减小再增加的趋势;油菜钵苗茎秆的耐挤压、耐拉能力随时间的增加而增加;油菜钵苗最佳拔苗位置在下部,取苗机构最佳拔取幼苗角度为50°左右,最佳移栽苗龄为5叶1芯。该结论为设计油菜钵苗移栽机械取苗输送部件提供了初步的试验基础,同时为进一步研究油菜移栽机械取苗、护苗、栽插参数等关键部件结构、运动学动力学参数提供理论依据。
The physical and mechanical properties of rapeseed pot stems were tested. The stem diameter and seedling height of rapeseed pots under different seedling ages were measured. The seedlings of rapeseed pots with different seedling ages were subjected to the plucking experiment and the stalk compression and pull-off test. The results showed that in the same period of time, the height of stem diameter and seedling leaf of seedlings of Xiangza 1613 were roughly normal distribution. The seedling density of seedlings of rapeseed pot increased with the increase of seedling emergence position and increased with the increase of seedling emergence angle First reduce and then increase the trend; rapeseed pot seedling stem extrusion resistance, resistance to pull capacity increases with time; rapeseed pot seedling best in the lower part of the seedling, seedling pick the best seedling angle of 50 ° About the best transplanting seedling age 5 leaves 1 core. The conclusion provides a preliminary experimental basis for the design of rapeseed pot seedling transplanting machinery take the seedling transplanted parts, at the same time to provide theoretical basis for further study on the structure of the key components such as seedling raising, seedling protection, transplanting parameters and so on, in accordance with.