This paper describes problems of quality control in the nonprocess sequences such as transport,bagging(distribution)and storage,presents the key factor,critical relative humidity(CRH),influencing the physical quality of chemical fertilizer,and analyzes the reasons for the decay of physical properties of chemical fertilizer,e.
叙述化肥非生产环节即移运、包装（分配）、储存等过程的质量控制问题，介绍影响化肥物理质量的关键因素临界相对湿度（ＣＲＨ）的概念，分析结块、起尘、流动性差及过度吸湿等化肥物性衰减的原
Fabric bagging, Part I: Subjective perception and psychophysical mechanism;
织物起拱 第一报:主观评价和心理物理标度(英文)