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塑料大棚黄瓜是我国北方地区,早春蔬菜栽培的主要形式之一。由于棚内高温、高湿的环境,导致黄瓜霜霉病严重发生,是当前影响产值提高的主要障碍。据1986年春在长治市调查,大棚黄瓜病害发生普遍而严重,6月上旬病害即造成早期死秧,毁棚的局面,缩短结瓜期约1个月左右。早期毁棚为62.51亩,占总面积129.24亩的48.37％,每亩平均损失产值1472元,总计损失达9.2万余元。1986年春经应用安阳林药厂研制的百菌清烟柱,防治大棚黄瓜霜霉病试验,取得了良好效果,投资与收益之比为1:163.6,
Plastic greenhouses cucumbers in northern China, early spring vegetable cultivation is one of the main forms. Due to the high-temperature and high-humidity environment in the shed, the serious cucumber downy mildew occurred, which is the main obstacle to the current increase of output value. According to a survey conducted in Changzhi City in the spring of 1986, the occurrence of cucumber diseases in greenhouse was widespread and serious. In early June, the disease caused the situation of early death and destruction of greenhouse and shortened the period of fruiting by about one month. 62.51 mu was destroyed in the early stage, accounting for 48.37% of the total area of 129.24 mu, with an average output value of 1,472 yuan per mu and a total loss of 9.2 million yuan. The spring of 1986 by the application of Anyang Lin pharmaceutical factory developed chlorothalonil column, prevention and control greenhouse cucumber downy mildew test and achieved good results, the investment and the proceeds ratio of 1: 163.6,