The Survey On The Typical Cultivation Environmental Management Of High-productive Cucumber In The Greenhouse In Lingyuan Area Of Liaoning Province

The context of this paper streams from,that is,first in terms of the cultivation environment in the greenhouse for three high-productive and typical cucumbers,who are harvest in the spring and winter,second in terms of the greenhouse structure,and whose production place sits in the Lingyuan,Chaoyang of Liaoning province.By the survey,while making a good understanding and coming to the conclusion of the parameters of the environmental regulation about the high-productive cucumber in Lingyuan,the pros and cons can be analyzed,so the optimized means,in which the cultivationenvironment of the high-productive and overwinter cucumber can be regulated,should be popularized.To reach the goal of sustainable-collected and remote-observed data of varied elements in comparison with several greenhouses,simultaneously,we set up an intelligent structural-connected system for the collection of the parameters,which is,at the same time,installed in the triple greenhouses in order to monitoring and collecting the parameters of the environment.The pros and cons can be found by the repeated contrast.Selection of the light in the greenhouse environment management,environment management,environment humidity,soil temperature,soil moisture,carbon dioxide concentrations change management are analyzed and we come to a conclusion:1.High temperature in the noon and adequate temperature in the night are the typical means of the environmental management.Farmers in the average temperature is as high as 40? at noon and continue for a period of time.In the period before the last 0.18-0.71 h,the average minimum temperature contains the duration of 1.4h.A long midday of high temperature plays an important role not only in rapid accumulation of plant photosynthate,but also in the common cucumber disease pathogen inactivation.On the night,the temperature regulation,on average during the period of "restrain the growth of seedlings" when veiling the curtain,should be controlled to the temperature of 12 ?.In the period of the temperature is not lower than 15 ? while veiling the curtain,and the temperature while covering the curtain is not less than 18 ?.The soil temperature environment is stable and had no significant during the day and month.19?lowest average soil temperature meets the required temperature cucumber roots,providing a good temperature environment to root for the healthy growth.2.Lingyuan area light in greenhouse environment is appropriate.At noon,light intensity during the winter is more than 35000 lx to meet winter cucumber growth needs.On the illumination time regulation,we should make sure that the plant meets the light length of more than 8h.3.Humidity in glasshouse environment is extremely bad,the average relative humidity above 85%for glasshouse during the winter time can last for more than 15h,and the saturation temperature lasts for more than 12h.Meanwhile,the wet disease takes place easily.In order to ensure the plant in the midday heat management out of hurt,Lingyuan greenhouse at midday temperature continue maintaining lowest average relative humidity at above 57%in greenhouse.Because of the stability of the soil humidity,there is no significant change during the day and month.Due to unreasonableirrigation methods of the farmers three soil humidity is around 48%,and can't meet the demand of the cucumber roots.4.What is the cucumber further high yield potential in Linguyuan area is that no carbon dioxide fertilization,applying carbon dioxide fertilizer before midday heat wind.Baced on greenhouse structure,we concerns about the daylighting properties as well as thermal characteristics of greenhouse and comes to the conclusion:1.Thermal characteristics:The wall of the greenhouse provides a sound ability of the heat preservation with the help of 75%efficient heat preservation rate by itself.The disunity of the heat preservation structure,as well as the 2%defect of the efficient heat preservation rate result in a disunion of the heat increase,affecting the change of the temperature environment.2.Daylighting features:The average daily light transmittance of the greenhouse,which is used to be a place for the cultivation of the winter cucumber,accounts for 75.6%?83.7%.A disunity design of the daylighting structure and an unreasonable roof shape may lead to a lack of the lighting,making a certain difference on the effect of the daylighting over the greenhouse.