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一、生态防治 1、温度防治。黄瓜是一种喜温作物其生长发育的适宜温度为20～30℃,在低于10℃或高于35℃的温度条件下生长发育不良。而黄瓜霜霉病是在15～25℃条件下病菌从侵入到发病只有3～5天时间,可这个温度却是黄瓜生长的适宜温度,在15℃以下和28℃以上病菌孢子不能存活。所以,要做到日出后通过温室效应加温使棚内温度尽快升到28～30℃,以满足光
First, ecological control 1, temperature control. Cucumber is a thermophilic crop growth and development of the appropriate temperature is 20 ~ 30 ℃, less than 10 ℃ or higher than 35 ℃ under the growth and development of poor conditions. The cucumber downy mildew is 15 ~ 25 ℃ under the conditions of bacteria from invasion to onset of only 3 to 5 days, but this temperature is the optimum temperature for cucumber growth, below 15 ℃ and 28 ℃ bacteria spores can not survive. Therefore, to be done after the sunrise by warming the greenhouse effect so that the studio temperature as soon as possible rose to 28 ~ 30 ℃, to meet the light