随着聚合草种植面积的扩大和种根的增多,研究在田间保留部分根,使之安全越冬,另一部分收回供繁殖或饲用的措施,是聚合草生产中急待解决的问题。1977—1978年间,我们对垅作的聚合草进行了去头深(足尚)越冬保护试验,获得较好的效果,现总结如下. With the expansion of planting area and the increase of rooting, the study of some roots in the field to make it safe and wintering, and the other measures to recover for breeding or feeding are urgent problems in the production of polymerized grass. From 1977 to 1978, we carried out a test of over-wintering protection for the aggregated grass, and obtained better results. The results are summarized as follows.