在河北低平原区对青刈黑麦的播量及播期效应进行的研究表明青刈黑麦以收获鲜草为目的适宜播量为165kg/hm2;适宜播期阈值下限为10月底;青刈黑麦的播期效应明显,随着播期的推迟导致其孕穗期、抽穗期、扬花期的延迟并使产量明显下降。根据研究结果分析,青刈黑麦可以利用果树冬春休眠期与果树进行间作,其进入果园生态系统是可行的。 The results of sowing date and sowing date of green mulching rye in Hebei low plains showed that the suitable sowing amount of green mulching rye was 165kg / hm2 for harvesting fresh grass; the lower limit of suitable sowing date was the end of October; The sowing date was obvious. With the delay of sowing date, the booting stage, heading stage and flowering stage were delayed and the yield was obviously decreased. According to the results of the study, green rye can intercropping with fruit trees during the winter and spring dormancy of fruit trees, and it is feasible to enter the orchard ecosystem.