Critical moisture is to point to exceed certain limit when water content, the respiration intensity of commissariat rises significantly namely, form an obvious turning point, the moisture of turning point calls critical moisture.

• 临界水分是指当含水量超过一定限度，粮食的呼吸强度即显著提高，形成一个明显的转折点，转折点的水分称为临界水分。