Re-sults indicate that the rough rice mainly fissured after drying.The moisture gradient caused uneven shrinkage is the main reason of rice fissuring after rapid drying.

• 结果表明,干燥应力裂纹主要出现在干燥结束后的存放期间,快速干燥后谷粒内部形成的水分梯度是水稻产生应力裂纹的主要原因。