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去年,丹东市振安区五龙背乡蔬菜生产专业户张忠勇,采用大温差方法培育大棚黄瓜苗收到良好效果。今年,他在8分地的塑料大棚里栽了2,000株用上述方法培育的“长春密刺”黄瓜苗,4月下旬开始上市,比一般大棚黄瓜提早上市半个月。 大温差育苗的具体方法是: 1月中下旬播种。播种前将种子用13℃温水浸种4小时,然后放到零下5～10℃条件下冻12小时,接着用凉水缓冻,这样处理4次。
Last year, Zhang Zhongyong, a specialist in vegetable production in Wulong Township, Zhen’an District, Dandong City, received good results using a large temperature difference method to cultivate greenhouse cucumber seedlings. This year, he planted 2,000 “Changchun spike” cucumber seedlings nurtured in the above-mentioned method in a plastic shed of 8 cents. The cucumber seedlings began to be marketed in late April and went on sale half an hour earlier than the average greenhouse cucumber. Large temperature difference nursery specific methods are: sowing in late January. Soak the seeds with warm water at 13 ° C for 4 hours before sowing and then freeze them for 12 hours at minus 5 to 10 ° C, then freeze with cold water and treat them 4 times.