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在辽北高寒地区,冬季温室蔬菜育苗全部依靠大量浇煤.不仅耗费大量能源,而且提高了成本,降低了效益。针对这种情况,我们从1989年开始试验三双育苗,1991年试验成功,1992年全县推广,深受广大菜农的欢迎。
In the alpine region of northern Liaoning, vegetable nurseries in the winter greenhouse rely heavily on large amounts of coal, which not only consumes a lot of energy, but also increases the cost and reduces the benefits. In view of this situation, we started experimenting with three pairs of seedlings in 1989 and successfully tested in 1991. The county was popularized in 1992 and was well received by farmers.