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塑料大棚蔬菜栽培贵在提早和延后。然而在寒冷的冬末春初或秋末冬初,大棚生产愈提早或延后,所受低温冻害的威胁就越大。因此准确地预测冻害发生的时间和强度,使大棚生产及冻害的御防建立在经济、安全、可靠的基础上是十分重要的。为此,近年来我们在大棚冻害的预报方面进行了反
Plastic greenhouse vegetable cultivation in the early and delayed. However, in the late spring or late autumn and early winter in winter, the more or less the greenhouses are produced, the greater the threat to low-temperature frost damage. Therefore, it is very important to predict accurately the time and intensity of frost damage and to establish the imperial prevention of greenhouse production and frost damage on the basis of economy, safety and reliability. For this reason, in recent years we have conducted an anti-freeze in the prediction of greenhouses