予北地区甘兰型油(艹才)安全越冬,是一个重要的问题。根据多年的生产实践和科学实验,深刻认识到这个问题必须加以解决。予北一般冬季较寒冷,但其寒冷程度和持续时间,在不同年份又不相同,因此油(艹才)在越冬期间的死苗情况也随之不同。回顾八年来甘兰型油芽在小店公社的越冬死苗情况,基本上是一年较轻,一年较重,个别严 It is an important issue that the oil of the genus Brandou in the northern part of the country is overwintered safely. Based on many years of production practice and scientific experiments, we have profoundly realized that this problem must be solved. The north is usually colder in winter, but its coldness and duration are different in different years. Therefore, the seedling emergence of oil (Diancai) during the winter is also different. Recalling the past eight years, the type of oil-buds in the store commune winter dead seedlings, basically a year lighter, heavier a year, individual strict