论文部分内容阅读
一、温度管理。保住最低温,限制最高温,延长最适温。黄瓜低于12℃根系停止生长,低于5℃易受冻害,最低温度应保持在10℃以上,短时间也不能低于5℃。在深冬期间应以保温为主,要密切注意天气变化,预防寒流袭击,必要时进行辅助补温,防止冻害的发生。冬季一般由于地温偏低黄瓜根系生长缓慢,除覆盖地膜、温水浇灌等增温措施外,在深冬季节,当温室内温度升至30℃时,不要马上放风,维持一段时间再放风,以进一步提高地温。
First, temperature management. Keep the lowest temperature, limit the maximum temperature, extend the optimal temperature. Cucumber growth below 12 ℃ stop growing, less than 5 ℃ susceptible to frost damage, the minimum temperature should be maintained at 10 ℃ above, a short time can not be less than 5 ℃. In the winter should be based insulation, pay close attention to changes in the weather, to prevent the cold attack, if necessary, supplementary temperature, to prevent the occurrence of frost damage. Winter generally due to low ground temperature Cucumber root growth is slow, in addition to covering the plastic film, warm water and other measures to increase the temperature, the winter season, when the temperature inside the greenhouse rose to 30 ℃, do not immediately release the wind for some time and then release the wind to further Increase ground temperature.