我场去年由四川引进一批胜利油菜种子,为了更正确了解它在贵州气候(平均昼夜温差为6.5℃,平均温度为17.6℃,最低温度为0.45℃,最高温度为31.5℃,全年霜期为102天)条件下的生长情况,以便进一步掌握它的播种适期,因此作了这一试验。播种期共分十期,从1955年10月5日起播第一期,以 Last year, a field of rapeseed seeds was introduced from Sichuan. In order to get a better understanding of its climate in Guizhou (average temperature difference between day and night is 6.5 ℃, average temperature is 17.6 ℃, minimum temperature is 0.45 ℃, maximum temperature is 31.5 ℃, 102 days) under the conditions of growth in order to further grasp its sowing period, so this test was made. Seeding period is divided into ten periods, starting from October 5, 1955 broadcast the first period