半地下式日光温室的土地利用率分析

Analysis of the Land Utilization Ratio in the Semi Underground Energy-saving Sunshine Greenhouse

[目的]研究半地下式日光温室的土地利用率,解析该类型日光温室土地利用效率的途径。[方法]计算10 m跨度半地下式日光温室,随长度变化,该日光温室的土地利用率的变化,并进一步分析增加跨度对土地利用率的影响。[结果]10 m跨度的半地下日光节能温室最佳室内长度范围80 m以上,其室内生产面积土地利用率的极限在0.50以内,全部生产面积土地利用率的极限在0.62以内。对80~90 m长度的温室其跨度从10 m增加到13 m,土地利用率可以提高2%。[结论]半地下式日光温室的土地利用率较低,增加长度和跨度对提高土地利用率效果有限,应注重采取多种防止热量散失的措施,增加温室的保温性能,同时注重耐低温寡照品种的引用,提高日光温室的种植技术,增加半地下式日光温室的土地生产率。

[Objective]The land use efficiency of semi underground solar greenhouse was studied,and the way of land use efficiency in this type of solar greenhouse was analyzed.[Method]The change of the land use rate of the solar greenhouse was calculated with the change of the length of the 10 meter span semi underground solar greenhouse,and the effect of increasing the span on the land use rate was further analyzed. [Result]The best chamber length of the semi underground energy-saving solar greenhouse with 10 meters span is more than 80 meters,its net production area of land utilization rate limit within 0.50,the total production area of land utilization rate limit within 0.62. For the greenhouse with 80-90 m length,its span increased from 10 m to 13 m,and the land utilization rate can be increased by 2%.[Conclusion]The land utilization rate of the semi underground solar greenhouse is low.The effect of increasing the length and span on the land utilization is limited.Many measures should be taken to prevent the heat loss to increase the thermal insulation performance of the greenhouse.At the same time,attention should be paid to the introduction of low temperature tolerant varieties,improve the cultivation technology of solar greenhouse,thereby increasing the land productivity of semi-underground solar greenhouse.