摘要
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０．９７７，比单作提高了２５％－４０％；变作物一年一熟为一年两熟，亩产可达到４４０—６１０ｋｇ，比单作增产２０％－８０％．
The heat efficiency of one film in dry farming fields of wheat and corn is studied. It suggests that with the application of this plastic film,the soiltemperature could increase about 2-6℃ thus provided a favorable condition to the growth of winter-wheat .with a heat efficiency of 0. 997.Compared with that of single croping the heat efficiency has been raised by 24%-40%. And therefore one crop a year became two crOP a year. Per mu yield is about 440-610kg and compared with that of single croping it increased by 20%-80%.
出处
《气象》
CSCD
北大核心
1995年第2期51-54,共4页
Meteorological Monthly
关键词
旱田
地膜
热效应
小麦
玉米
one film in dry farming fields heat effect
