冬牧70黑麦是一种优良的一年生冬季牧草。1979年自美国引种以来已有很多研究并在全国推广,但对其种子产量的研究报道还不多。本试验旨在通过作物栽培中几个最重要的因素——播种期、灌溉、施肥,研究如何提高冬牧70黑麦的种子产量。试验于1988—1989年在山东农大牧场进行。试验地壤性土,土壤肥力中等。试验分三个因素:播 Winter grazing 70 rye is an excellent annual winter grass. Since the introduction of the United States in 1979, there have been many studies and popularization in the whole country, but the research on its seed yield is not reported yet. The purpose of this experiment is to study how to improve the seed yield of winter grazing 70 rye through the most important factors in crop cultivation - seeding period, irrigation and fertilization. The experiment was carried out in Shandong Agricultural University ranch from 1988 to 1989. Soil test soil, medium fertility. Test divided into three factors: broadcast