储粮扦样环节中分区面积状况的研究

研究粮仓中的储藏小麦在不同分区面积内的质量指标状况，探讨如何选择分区面积，扦样后能合理有效的反映粮仓储粮的质量。以平房仓中的储藏小麦为研究对象，选取3处区域作为平行实验，划分不同的分区面积，分区面积之间相差为50m2，深度分层后按照五点扦样法分别扦取不同分区面积内的小麦，对其容重、水分进行测定，通过SPSS做单样本t检验和单因素方差分析，依据不同分区面积之间的质量指标差异探讨粮食扦样时的分区面积。结果表明：三处平行实验的检验结果具有一致性，说明本实验研究可适用于不同仓房、仓房不同位置；一个扦样点可有效代表的面积约为50m2，分区面积大于50m2时，小麦质量状况随分区面积的不同而有所不同，有必要探讨最佳分区面积。制定扦样方案时最佳分区面积为不超过250m2，扦样后可合理有效的反映粮仓内的小麦质量状况。

Study on the partition area of cutting sample in grain storage

Objective To study the quality indexes of stored wheat in different zoning areas, and discuss how to choose subareas, which can reasonably and effectively reflect the quality of stored grain in the granary after cutting samples. Methods Taking the stored wheat in the bungalow warehouse as the research object, 3 areas in 2 warehouses were selected as parallel experiments, different partition areas were divided with 50 m2 as the gradient difference in the range of 50?400 m2. After deep stratification, the wheat in different partition areas were cut according to the five point cutting sample method, and their bulk density and moisture were measured. The single sample t test and one-way analysis of variance were done by SPSS, according to the difference of quality indexes between different partition areas, the partition area of grain cutting was discussed. Results When the partition area was 50 m2, selecting a cutting sample point could effectively represent the wheat quality status in the partition, when the partition area was greater than 50 m2, the wheat quality status varies with the partition area, so it was necessary to select a reasonable partition area to formulate the cutting sample scheme; the partition area was about 250 m2 when wheat bulk density was used as the judgment index, and 300 m2 when wheat moisture was used as the judgment index; the test results of 3 parallel experiments were consistent, which showed that this study could be applied to different warehouses and different positions of warehouses. Conclusion When making the cutting plan, the area of the partition is 250?300 m2, after cutting samples, the quality of wheat in the granary can be reasonably and effectively reflected.