黄瓜产量的形成,受土肥、水分、温度,湿度、光照、风(各种气体浓度)、病虫、品种的结瓜习性,秧果关系的调节、采瓜的肥瘦标准等等因素制约。黄瓜喜温喜光,随着光温的数量变动,逐次产量会有相应的明显变化。生产上常见,当某一时段光热条件严重不适,共他栽培条件各不相同的大棚,会同时出现产量明显下降,相反,栽培条件基本相同,由于光热条件不同,不同年份相同时段的产量有显著差异。例如,1977年4月下旬的阴天低温,5月 The formation of cucumber yield is controlled by factors such as soil fertility, moisture, temperature, humidity, light, wind (various gas concentrations), pests and diseases, the regulation of the relationship of seedling and fruit, the fat and lean standards of harvesting, etc. Kiwi hi light, with the change in the number of light temperature, successive production will have the corresponding significant changes. Production is common, when a certain period of severe heat and light conditions, a total of his cultivation conditions vary in the greenhouse, there will be a significant decline in production, on the contrary, the same cultivation conditions are basically the same, due to different light and heat conditions, the same period of different years yield There are significant differences. For example, cloudy days in late April 1977, low temperatures, May