旱作地膜小麦玉米带田一膜两用热效应研究

A Study on the Tropical Effect of Two Uses a Film about Banding Grow of Dtyland Wheats and Corns Covered with Film

旱作地膜小麦—玉米带田一膜两用技术热效应显著，可提高地温２—６℃，保证了小麦安全越冬，促进了作物早发。热资源利用率高达０．９９７，比单作提高２５％—４０％，变作物一年一熟为一年两熟。

The tropical effect of two uses a film about banding grow of dryland wheats andcorns covered with film are very good. It has increased by 2 6℃ of ground temperature andensured safety overwintering of wheats, forced corps advanced growth.Utilization ratio oftropical resource is 0.997.It is 25 40 percent in banding grow more than in singal grow,changed from one crop a year to two crops a year.