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Dimensional and density data and relationships for seeds of agricultural crops

机译：农作物种子的尺寸和密度数据及其关系

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Dimensions of seeds of twenty different agricultural crops were determined by caliper measurements. Individual seed weights were obtained, and mean seed volumes were determined by air-comparison pycnometer measurements for use in determining seed densities. Seed densities ranged from 1.002 g/cm~3 for safflower, Carthamus tinctorious L., to 1.460 g/cm~3 for milled rice, Oryza sativa L. Test weight (bulk density) measurements were also taken and moisture contents were determined by standard tests. Collectively, these data supplement the limited seed density data currently available in the literature for reference. The product of three orthogonal dimensions (length, width and thickness) was calculated for each kind of seed. A volume coefficient was determined as the ratio of the measured mean volume to the orthogonal-dimension product. The dimensionless volume coefficients, which ranged from 0.222 for oil-type sunflower, Helianthus annuus L., seeds to 0.588 for sweetclover, Melilotus officinalis Lam., seeds, are useful in estimating seed volume from seed dimensional data. With use of the appropriate volume coefficient, seed density can be estimated for a particular kind of seed from seed weight and dimensions, and the potential utility of this concept is demonstrated for single lots of three kinds of seed.
机译：通过卡尺测量来确定二十种不同农作物种子的尺寸。获得单个种子的重量，并通过空气比重比重瓶测量确定平均种子体积，以用于确定种子密度。种子密度的范围为：红花（红花L.）至1.002 g / cm〜3，碾米，水稻（Oryza sativa L）的米为1.460 g / cm〜3。还进行了测试重量（堆积密度）测量，并通过标准测定水分含量测试。总体而言，这些数据补充了目前文献中可供参考的有限种子密度数据。为每种种子计算了三个正交尺寸（长度，宽度和厚度）的乘积。将体积系数确定为测得的平均体积与正交尺寸乘积的比率。无量纲的体积系数（从油型向日葵，向日葵的种子的0.222到甜三叶草，厚朴的种子的0.588）不等，可用于根据种子尺寸数据估算种子体积。通过使用适当的体积系数，可以从种子的重量和尺寸估计特定种类的种子的种子密度，并且针对三种种子的单批展示了此概念的潜在用途。

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