棉花钵苗和钵体的力学特性试验

以棉花品种鄂抗棉-10和铜杂411为研究对象,对棉花幼苗进行不同加载速度下的剪切和弯曲试验,并对钵体进行压缩试验。结果表明:不同品种棉花幼苗的剪切强度和弯曲强度都随加载速度的增大而增大;在相同加载速度下,鄂抗棉-10的剪切强度和弯曲强度均大于铜杂411;对剪切强度和弯曲强度进行可重复双因素方差分析,结果表明加载速度和品种对棉花幼苗的剪切强度和弯曲强度均有显著影响,两者的交互作用对剪切强度和弯曲强度无显著影响。钵体在径向和轴向压缩方式下的破裂力分别为73.3~110.5N和100.3~192.3N,钵体的抗挤压能力具有各向异性。

Mechanical properties of cotton bowl seedling and cotton bowl

Cotton cultivars including E'kangmian-10 and Tongza 411 were used to study the mechanical damage of cotton bowl seedling during seedling transplanting.The shear and bending of cotton seedling was tested at different loading rate.The cotton bowl was tested with compression.Two-factor variance analysis with duplication was used to analyze shear strength and bending strength.The results showed that the shear strength and bending strength was increased with the increase of the loading rates.When loading rate was the same,the shear strength and bending strength of E'kangmian-10 were greater than that of Tongza 411.Both the load rate and varieties had significant effect on the shear strength and bending strength.The interaction between them had no significant effect on the shear strength and bending strength of cotton seedling.Bowl rupture force was 73.3-110.5 N and 100.3-192.3 N at radial and axial compression.The anti-extrusion capability of bowl had anisotropies.It will provide a theoretical basis for the design of mechanically transplanting the cotton seedling.