Technical Problems and Approval Standards for the Regional Trials of Soybean Varieties in Liaoning Province

The technical problems and approval standards for the regional test of soybean varieties in Liaoning Province were discussed. The technical key points for the soybean regional trials were the selection of trial fields, preparations in lab be-fore sowing, preparations in regional trial field before sowing, sowing in suitable time and strict with sowing process, field management and survey record, harvest and sampling as wel as lab test and summary. In addition, the approval standards for common varieties and quality varieties for the soybean regional trials in Liaoning were introduced, with the aim to provide accurate and scientific theoretical basis for the approval of soybean varieties.

正交试验法优化淫黄颗粒的提取工艺

[目的]优化淫黄颗粒的提取工艺。[方法]采用正交试验法,以提取液中淫羊藿苷的含量为考察指标,对影响水煎提取效果的加水量、浸泡时间、煎煮时间、次数等4个因素进行研究。[结果]淫黄颗粒的最佳提取工艺为A2B2C3,即加水量为8倍,提取3次,每次1.5h。[结论]该实验所优选的工艺稳定,可行。