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烤烟优质稳产必须有壮苗做基础。然而在具体实践上,常常因育苗的技术措施不当而降低了烟苗的素质。特别是近年来推广烤烟地膜覆盖裁培以后,移栽期普遍提早,因此,对壮苗的“早”字提出了更高的要求。但由于早春气温偏低,即使应用塑料薄膜育苗,也常常难以育出早而壮的烟苗。为此,1983—1984年我们设计了双膜打孔育苗法(塑料薄膜加地膜),
Flue-cured tobacco must have a strong and stable base. However, in practical practice, the quality of tobacco seedlings is often reduced due to improper technical measures of seedling raising. Especially in recent years to promote the cultivation of tobacco cover plastic mulching, the transplanting period generally early, therefore, strong seedlings “early” word put forward higher requirements. However, due to the low temperature in early spring, it is often difficult to breed early and strong tobacco seedlings even when plastic film seedlings are used. To this end, we designed a double-film punch seedling method (plastic film plus plastic film) from 1983 to 1984,