To evaluate the effects of solar greenhouse with different structure and CO2 enrichment on illumination and temperature performance of greenhouse and cucumber growth and development in the central region of Inner Mong...To evaluate the effects of solar greenhouse with different structure and CO2 enrichment on illumination and temperature performance of greenhouse and cucumber growth and development in the central region of Inner Mongolia, the research used traditional solar greenhouse （A） and blanket-inside solar greenhouse（B）, and set 4 treatments： AE （traditional solar greenhouse A with CO2 enrichment）, AN （traditional solar greenhouse A without CO2 enrichment）, BE （blanket-inside solar greenhouse B with CO2 enrichment） and BN （blanket-inside solar greenhouse B without CO2 enrichment）, to explore the influence of cucumber growth, photosynthetic property, quality and yield in different structure solar greenhouses with CO2 enrichment. The results showed that the illumination and temperature in blanket-inside solar greenhouse was superior to traditional solar greenhouse, and the average light intensity in blanket-inside solar greenhouse increased by 21.05%, compared with traditional solar greenhouse. Under the condition of same greenhouse structure, stem height ,average stem diameter, contents of soluble sugar, vitamin C, net photosynthetic rate and yield showed any significant difference between the treatments with CO2 enrichment or not. Under the condition of same CO2 concentration, BE cucumber average stem height, average stem diameter, contents of soluble sugar, net photosynthetic rate and yield in BE was higher than which in AE. Therefore, the optimization in structure of blanket-inside solar greenhouse remarkably improved illumination and temperature property, combining with CO2 enrichment as application technology, there was crucial significance to promote the greenhouse performance and improve the efficiency of greenhouse vegetable production.展开更多
The paper studied the photosynthetic and water physiological characteristics of Cinnamomum septentrionale.The results indicated that the light saturation point of C.septentrionale was 1 301 μmol·m-2·s-1,and...The paper studied the photosynthetic and water physiological characteristics of Cinnamomum septentrionale.The results indicated that the light saturation point of C.septentrionale was 1 301 μmol·m-2·s-1,and the light compensation point was only approximately 17 μmol·m-2·s-1.It had a quite low light compensation point and a higher saturation point.It belongs to a heliophytic tree species,but it also could tolerate shade,and was suitable to a multiple light condition.The utilization efficiency of water of C.septentrionale reached 3.476×10-3 g·g-1,more than those of Celtis sinensis,Ulmus gaussenii,Pteroceltis tatarinowii and Zelkova schneideriana and 1.88 times higher than that of Pterocarya stenoptera.The results suggested that the water utilization efficiency of C.septentrionale is high and has a similar drought-resistant ability with Ulmaceae plant.展开更多
Photosynthesis plays an important role in organic synthesis, solar energy storage, and environmental protection. Photosynthesis is of great theoretical and practical significance. In this paper, the main factors affec...Photosynthesis plays an important role in organic synthesis, solar energy storage, and environmental protection. Photosynthesis is of great theoretical and practical significance. In this paper, the main factors affecting photosynthesis of higher plants, including light, water, temperature, CO2, mineral elements and plant genotypes, were briefly reviewed and summarized, and the development prospect of photosynthesis was prospected.展开更多
文摘To evaluate the effects of solar greenhouse with different structure and CO2 enrichment on illumination and temperature performance of greenhouse and cucumber growth and development in the central region of Inner Mongolia, the research used traditional solar greenhouse （A） and blanket-inside solar greenhouse（B）, and set 4 treatments： AE （traditional solar greenhouse A with CO2 enrichment）, AN （traditional solar greenhouse A without CO2 enrichment）, BE （blanket-inside solar greenhouse B with CO2 enrichment） and BN （blanket-inside solar greenhouse B without CO2 enrichment）, to explore the influence of cucumber growth, photosynthetic property, quality and yield in different structure solar greenhouses with CO2 enrichment. The results showed that the illumination and temperature in blanket-inside solar greenhouse was superior to traditional solar greenhouse, and the average light intensity in blanket-inside solar greenhouse increased by 21.05%, compared with traditional solar greenhouse. Under the condition of same greenhouse structure, stem height ,average stem diameter, contents of soluble sugar, vitamin C, net photosynthetic rate and yield showed any significant difference between the treatments with CO2 enrichment or not. Under the condition of same CO2 concentration, BE cucumber average stem height, average stem diameter, contents of soluble sugar, net photosynthetic rate and yield in BE was higher than which in AE. Therefore, the optimization in structure of blanket-inside solar greenhouse remarkably improved illumination and temperature property, combining with CO2 enrichment as application technology, there was crucial significance to promote the greenhouse performance and improve the efficiency of greenhouse vegetable production.
文摘The paper studied the photosynthetic and water physiological characteristics of Cinnamomum septentrionale.The results indicated that the light saturation point of C.septentrionale was 1 301 μmol·m-2·s-1,and the light compensation point was only approximately 17 μmol·m-2·s-1.It had a quite low light compensation point and a higher saturation point.It belongs to a heliophytic tree species,but it also could tolerate shade,and was suitable to a multiple light condition.The utilization efficiency of water of C.septentrionale reached 3.476×10-3 g·g-1,more than those of Celtis sinensis,Ulmus gaussenii,Pteroceltis tatarinowii and Zelkova schneideriana and 1.88 times higher than that of Pterocarya stenoptera.The results suggested that the water utilization efficiency of C.septentrionale is high and has a similar drought-resistant ability with Ulmaceae plant.
基金Supported by Science and Technology Innovation Fund of Dalian City(2019J13SN120)Natural Science Foundation Guiding Project of Liaoning Province(20170540035)National Undergraduate Innovation and Enterpreneurship Training Program(201911258016)。
文摘Photosynthesis plays an important role in organic synthesis, solar energy storage, and environmental protection. Photosynthesis is of great theoretical and practical significance. In this paper, the main factors affecting photosynthesis of higher plants, including light, water, temperature, CO2, mineral elements and plant genotypes, were briefly reviewed and summarized, and the development prospect of photosynthesis was prospected.
