培育优质壮苗是早春大棚蔬菜生产最关键的一个生产环节,优良品种选定之后,温室育苗的技术措施就成为培育壮苗的决定性因素。过去一般采用温室明龙加温育苗,后来改进为电热线加温育苗。这两种方法在实际生产中都有不足之处。前者火龙设置于室内地表之上,点火后首先加热的是气温,然后由升高的气温间接地影响地温,使地温升高,这样常表现为室内的气温高于地温,且差异很大,而影响种子的发芽和秧苗的健壮生长,易发现徒长苗。后者常因农村电力紧 Nurturing high quality seedlings is the most crucial part of vegetable production in greenhouse in the early spring. After the selection of excellent varieties, the technical measures of greenhouse seedling have become the decisive factor in cultivating strong seedlings. In the past generally used in the greenhouse Minglong heating nursery, and later improved hotline heating nursery. Both of these methods have shortcomings in actual production. The former fire dragon set above the indoor surface, the first heat after ignition is the temperature, and then by the elevated temperature indirectly affect the ground temperature, so that the ground temperature rises, so often manifested as room temperature is higher than the ground temperature, and the difference is very large, Affect the seed germination and seedling robust growth, easy to find leggy seedlings. The latter often because of rural electricity tight