In order to investigate a better soilless culture medium and the possibility of grass clippings as alternative substrate for peat moss to grow Begonia cucullata Willd. in pots, the seedlings of widely cultivated B. cu...In order to investigate a better soilless culture medium and the possibility of grass clippings as alternative substrate for peat moss to grow Begonia cucullata Willd. in pots, the seedlings of widely cultivated B. cucullata were grown in pots with eight types of soilless substrates： T1（peat： perlite=1：1）, T2（peat： perlite： pine bark=1：1：1）, T3（corn stover： perlite： pine bark=1：1：1）, T4（corn stover： perlite： pine bark=2：1：1）, T5（grass clipping： perlite： pine bark=1：1：1）, T6（grass clipping： perlite：pine bark=2：1：1）, T7（vermiculite： perlite： pine bark=1：1：1） and T8（vermiculite： perlite： pine bark=2：1：1）, respectively, in a shade house of Shanghai Chenshan Botanical Garden to evaluate plant growth performance. The results showed that the stem diameter of B. cucullata increased significantly from day 30 to day 60 after potting,and the plant height, leaf number and leaf area increased largest from day 60 to day 90 after potting in all treatments. The growth of plants performed best in T6,with the highest branch number, leaf thickness, flower number, aboveground fresh and dry weights and relative chlorophyll content. Therefore, the substrate with grass clipping： perlite： pine bark=2：1：1 was the best culture medium for growing B. cucullata in this study, and the grass clippings could replace peat moss as alternative substrate for growing B. cucullata in containers.展开更多
The paper presents the results of research which showed the energy effects when used in foil tunnel heat accumulator. The study was conducted in two tunnels （with and without heat accumulator） and two cycles of grow...The paper presents the results of research which showed the energy effects when used in foil tunnel heat accumulator. The study was conducted in two tunnels （with and without heat accumulator） and two cycles of growing cucumbers, i.e., in the cultivation of spring and autumn. The heat accumulator is divided into three segments of varying capacity coal deposits （porphyry-type stones）. During the test crops （cucumbers） measured parameters associated with the surrounding climate, microclimate parameters inside the building and parameters of the injected and flowing out air from the accumulator have been monitored and archived by a computer system. The intensity of solar radiation, the technology of cultivation and cultivated species of plants were the same in both the tunnel with heat accumulator as well as the control object. On the basis of the balance of behavior, the heat and mass are described occurring processes related to the exchange of air during ventilation facility. The resulting effects were converted into differences in heat demand between the tunnel and the tunnel with an accumulator of heat. It was found that despite the increase ventilation in adopted arbitrary surface of the foil tunnel, the scope of changes in the amount of heat saved in one of the cultivation is in the range from 0.0015 GJ to over 1.4 GJ of heat.展开更多
基金Supported by the Science and Technology Project of Shanghai Municipal Greening and City Appearance Administration(F112421)Foundation of Science and Technology Commission of Shanghai Municipality(14DZ2260400)Environmental Protection Science and Technology Project of Hunan Province(XCJZ[2012]347,XCJZ[2013]229)~~
文摘In order to investigate a better soilless culture medium and the possibility of grass clippings as alternative substrate for peat moss to grow Begonia cucullata Willd. in pots, the seedlings of widely cultivated B. cucullata were grown in pots with eight types of soilless substrates： T1（peat： perlite=1：1）, T2（peat： perlite： pine bark=1：1：1）, T3（corn stover： perlite： pine bark=1：1：1）, T4（corn stover： perlite： pine bark=2：1：1）, T5（grass clipping： perlite： pine bark=1：1：1）, T6（grass clipping： perlite：pine bark=2：1：1）, T7（vermiculite： perlite： pine bark=1：1：1） and T8（vermiculite： perlite： pine bark=2：1：1）, respectively, in a shade house of Shanghai Chenshan Botanical Garden to evaluate plant growth performance. The results showed that the stem diameter of B. cucullata increased significantly from day 30 to day 60 after potting,and the plant height, leaf number and leaf area increased largest from day 60 to day 90 after potting in all treatments. The growth of plants performed best in T6,with the highest branch number, leaf thickness, flower number, aboveground fresh and dry weights and relative chlorophyll content. Therefore, the substrate with grass clipping： perlite： pine bark=2：1：1 was the best culture medium for growing B. cucullata in this study, and the grass clippings could replace peat moss as alternative substrate for growing B. cucullata in containers.
文摘The paper presents the results of research which showed the energy effects when used in foil tunnel heat accumulator. The study was conducted in two tunnels （with and without heat accumulator） and two cycles of growing cucumbers, i.e., in the cultivation of spring and autumn. The heat accumulator is divided into three segments of varying capacity coal deposits （porphyry-type stones）. During the test crops （cucumbers） measured parameters associated with the surrounding climate, microclimate parameters inside the building and parameters of the injected and flowing out air from the accumulator have been monitored and archived by a computer system. The intensity of solar radiation, the technology of cultivation and cultivated species of plants were the same in both the tunnel with heat accumulator as well as the control object. On the basis of the balance of behavior, the heat and mass are described occurring processes related to the exchange of air during ventilation facility. The resulting effects were converted into differences in heat demand between the tunnel and the tunnel with an accumulator of heat. It was found that despite the increase ventilation in adopted arbitrary surface of the foil tunnel, the scope of changes in the amount of heat saved in one of the cultivation is in the range from 0.0015 GJ to over 1.4 GJ of heat.
