沙地雀麦种子土表萌发条件及其对幼苗生长的影响

Germination Conditionson on Soil Surface and Its Effect on Seedling Growth of Bromus ircutensis

采用正交试验设计的方法,对影响沙地雀麦土壤表面播种种子萌发的因素及适宜萌发的环境条件进行研究,结果表明:沙地雀麦种子在25℃、20%土壤水分、100%相对湿度、回干处理、播后镇压条件下的萌发成苗能力较好。其中,对种子萌发成苗影响较大的因素是空气相对湿度和土壤水分,其次是种子回干处理和播后镇压。

Factors affecting seed germination of Bromus ircutensis were studied with orthogonal experimental design. The results showed that the seeds germinated better under conditions： 25℃, 20% soil moisture, 100% relative humidity, re--dry processing and repression after broadcast. Air relative humidity and soil moisture affected seed germination more obviously, and secondly affecting factors were re--dry processing and repression after broadcast.