大鹁鸽灰豌豆种植面积较大,单产也较高,在我省倒茬作物中是主要良种。但因其为偏春性品种,一遇冬寒就有不同程度的死苗现象。为了搞清死前原因,于1983年4月进行了一些调查工作。一、死苗与播种期有关:从表1看出,田块1、2、3(单作)和4,均为10月15日至10月17日用犁开沟播种的,其死苗率在65.7—72.4％,平均死苗68.87％。而田块5在播种方法相同的条件下,10月20日播种,死苗率仅26.06％,比前者平均死苗率低42.81％。田块7的播期试验,由于播期推迟,冬田未全苗或 Large raccoon gray peas larger planting area, higher yield, in our province is a major crop inverted crop. However, because of its spring bias, there is varying degrees of dead seedlings in one winter cold season. In order to clarify the cause of death, some investigations were conducted in April 1983. First, dead seedlings and sowing period: As seen from Table 1, plots 1, 2, 3 (single for) and 4, are from October 15 to October 17 with plow ditch sowing, the dead seedlings The rate of 65.7-72.4%, the average dead seedlings 68.87%. The field 5 sowing methods in the same conditions, October 20 sowing, dead seedling rate was only 26.06%, 42.81% lower than the average dead seedling rate. Field 7 sowing date test, due to delayed sowing, winter full field or not