一种新型纳米转光膜的制备及增温效应

通过熔融插层法制备了具有光转换功能的纳米聚乙烯薄膜,用XRD、UV-Vis、FL、TGA等方法对转光膜的性能进行了分析研究,结果表明新型纳米转光膜能有效地吸收对植物有害、对温室棚膜有破坏作用的206~360nm的紫外光,发射360~500nm的蓝紫光,且其具有良好的抗荧光衰减性能。转光膜在红橙光和蓝紫光区的光质比例分别比对照高2.43%和1.82%,有利于植物进行光合作用,且在UV-A、UV-B、UV-C光区的光质比例分别低于对照1.35%,4.97%,5.54%,这在一定程度上会降低紫外线对塑棚温室内作物及棚膜的损害。与对照膜相比,纳米转光膜有良好的保温性能,且可有效提高塑棚温室内的空气温度和土壤温度,利于作物生长,农田试验结果表明,新型纳米转光膜可有效促进生菜的生长,用其处理的生菜鲜重比对照增加了14.03%,可有效提高作物的产量。

The Effect of the Novel "light fertilizer" on the Environment Factor in High Tunnel and Growth of Brassica Chinensis

[Objective] The aim was to study the properties of novel ＂light fertilizer＂, photo-conversion film, in order to evaluate its effect on the environmental factors and morphogenetic process of crops in the high tunnel. [Method] Photo-conversion film and Iongevous anti-dropping film were compared in terms of light, air and soil temperature utilizing the Facilities of leafy agriculture high tunnel intelligent monitoring system. Verifying the results by farmland experiment. [Result] Photo- conversion film indeed improved the light quality of high tunnel compared with the Iongevous anti- dripping film. The air and soil temperature was raised several degrees. Results of farmland experiment show that the average value of brassica chinensis fresh weight increased 19.15% compared to the control. [Conclusion] Photo-conversion film promotes more crop growth than Iongevous anti-dropping film due to improvement of light quality, air and soil temperature.

Agricultural Application of Multi-functional Leaf Vegetables Light-conversion Film

[Objective] The aim was to detect property of light-conversion agricultural films in order to resolve problems existing of greenhouses and in cultivation of out- of-season vegetables. [Method] Light-conversion films and common films were com- pared in terms Of light, air and soil temperatures. [Result] Vegetable greenhouse performed better in transmission of light, which would also improve air and soil tem- perature. [Conclusion] The comprehensive properties of vegetable light-conversion films proved better compared with common greenhouse, which improves light condi- tions for crops.

Influence of a New Nano-PE-film on the Greenhouse Environmental Factors

[Objective] This study was to evaluate the impact of a new controlled release anti-drip nano-PE-film （CRANPF） on greenhouse environmental factors. [Method] CRANPF and conventional anti-drip PE film （CLAPF） were compared in terms of air temperature, light intensity and CO2 concentration by the leafy agriculture greenhouse intelligent monitoring system. [Result] Compared to CLAPF, the air temperature rose slower in CRANPF during hot weather and had better photosynthesis efficiency. [Conclusion] Compared with ODLAPF, CRANPF has better perfor- mance and more extensive application prospects.

Study on New Nano Sun Shading Films

[Objective] The research developed a new kind of nano sun shading films that can be used in summer to maintain the appropriate indoor temperature for crops. [Method] The nano sun shading films were prepared by intercalation method. The films were characterized by XRD, TG, FA, UV-Vis-NIR and outdoor temperature test. [Result] Based on evaluation of cooling efficiency, a reduction 3-4 ℃ can be observed in newly developed nano sun shading films compared to control film. This film can control greenhouse light intensity effectively and decrease indoor tempera- ture, providing crops with appropriate growing temperature by reflecting most of in- frared light. Moreover, part of incident light can be converted to blue light and red light, which is beneficial to photosynthesis in plant. [Conclusion] Agricultural film is an important component to agriculture industry. Thus, agricultural film with improved properties and low cost has a broad application prospect.