廊坊市利用“廊坊４０型”日光温室生产冬春茬甜椒，经过三年试验、示范已取得成功。由于（一）冬春茬甜椒开花座果期夜间需要较高温度；（二）首批果实在春节前上市要保证足够的积温；（三）育苗期正处在８～９月份高温季节，种苗不易成活；（四）高温育苗导致病毒病、白粉虱 Langfang City, the use of “Langfang 40” solar greenhouse production of winter and spring pepper, after three years of testing, demonstration has been successful. Because (a) winter and spring sweet pepper flowering during the fruit holder of the night need a higher temperature; (b) the first batch of fruit market before the Spring Festival to ensure adequate accumulation of temperature; (c) nursery period is in August to September high temperature season, Seedlings are not easy to survive; (4) high temperature nursery lead to virus disease, whitefly