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一、尿素降温保存法:尿素是一种很便宜的降温剂。在一千毫升井水中,加入五百克尿素,温度可降至摄氏零到十度。猪瘟湿苗在这样的温度下,可保存七十二小时。二、硝酸铵、尿素降温保存法:一千毫升井水、一千二百克硝酸铵和一千克尿素混合后,最低温度可达摄氏零下七至十六度,将此液装在葫芦头里,七十二小时后上升到摄氏十至十五度,再加入一千克尿素,温度又降至摄氏零度至五度。若用冰瓶保存,维持低温时间更长。用完
First, urea cooling preservation method: urea is a very cheap cooling agent. In a thousand milliliters of well water, add five hundred grams of urea, the temperature can be reduced to zero to ten degrees Celsius. Swine fever wet seedlings in this temperature, can save seventy-two hours. Second, ammonium nitrate, urea cooling preservation method: a thousand milliliters of well water, one thousand two hundred grams of ammonium nitrate and one kilogram of urea mixed, the minimum temperature of seven degrees Celsius minus seven to sixteen degrees, the liquid in the gourd head . After 72 hours, it rose to ten to fifteen degrees Celsius. Then, one kilogram of urea was added and the temperature dropped to zero to five degrees Celsius again. If stored in ice bottles, to maintain a low temperature for longer. run out