Carbon sequestration and emission reduction in the construction industry plays an important role in China’s goal of achieving carbon neutrality.Research in Zhuzhou city scored 42 since the assessment of the green bui...Carbon sequestration and emission reduction in the construction industry plays an important role in China’s goal of achieving carbon neutrality.Research in Zhuzhou city scored 42 since the assessment of the green building project situation as the research object,in hot summer and cold winter areas of analysis and evaluation on the development of green building technology,and then sums up the carbon neutral background the priority areas and tasks for the development of green building techniques,optimization of the construction industry into a new era under the background of green development to provide the reference.展开更多
A plot experiment including four treatments, CK (N 105 kg ha-1 as urea, including a basal N application of 35 kg ha-1 and a topdressing N 70 kg ha-1 at turned green stage) and optimized N management (OPT1, OPT2 and OP...A plot experiment including four treatments, CK (N 105 kg ha-1 as urea, including a basal N application of 35 kg ha-1 and a topdressing N 70 kg ha-1 at turned green stage) and optimized N management (OPT1, OPT2 and OPT3, applied two-thirds, one-third and two-fifths N at jointing stage, respectively, total N 60 kg ha-1), was conducted to evaluate the effects of nitrogen management on growth and N uptake of winter wheat (Triticum aestivum), Dongnong 1, which is the first highly cold tolerant winter wheat in China. Index of population quality, N uptake and yield were determined. The ear-bearing tiller rate was increased by above 12%, and the leaf area index, biomass and N uptake were significantly decreased (p<0.05) at jointing stage. OPT treatments increased the grain to leaf area ratio at heading stage, the dry matter weight and N uptake after heading by 14.3-27.9%, 11.6-28.7% and 118.1-161.8 %, respectively. The yield of the OPT treatments was increased by 14.2-37.5% compared with CK, and there was a significant difference (p<0.05) between CK and OPT1 treatments. Harvest index and N partial factor productivity (PFP, kg grain yield per kg N applied) was clearly enhanced from 0.4 and 35.6 kg, respectively for CK to an average of 0.48 (p<0.05) and 77.6 kg (p<0.05) in the OPT treatments. These results indicated that the optimized N management increased the harvest index, yield and N use efficiency by decreasing the N application rate and postponing N application time, improved wheat population quality, controlled excessive growth in the vegetative stages and increased dry matter and N accumulation rates after heading.展开更多
基金supported by the Hunan Provincial and Municipal Joint Fund(No.2022JJ50069).
文摘Carbon sequestration and emission reduction in the construction industry plays an important role in China’s goal of achieving carbon neutrality.Research in Zhuzhou city scored 42 since the assessment of the green building project situation as the research object,in hot summer and cold winter areas of analysis and evaluation on the development of green building technology,and then sums up the carbon neutral background the priority areas and tasks for the development of green building techniques,optimization of the construction industry into a new era under the background of green development to provide the reference.
基金supported by grants from the National Basic Research Program of China (973 Program,2009CB118606)Special Fund for Agro-Scientific Research in the Public Interest, China (201103003)
文摘A plot experiment including four treatments, CK (N 105 kg ha-1 as urea, including a basal N application of 35 kg ha-1 and a topdressing N 70 kg ha-1 at turned green stage) and optimized N management (OPT1, OPT2 and OPT3, applied two-thirds, one-third and two-fifths N at jointing stage, respectively, total N 60 kg ha-1), was conducted to evaluate the effects of nitrogen management on growth and N uptake of winter wheat (Triticum aestivum), Dongnong 1, which is the first highly cold tolerant winter wheat in China. Index of population quality, N uptake and yield were determined. The ear-bearing tiller rate was increased by above 12%, and the leaf area index, biomass and N uptake were significantly decreased (p<0.05) at jointing stage. OPT treatments increased the grain to leaf area ratio at heading stage, the dry matter weight and N uptake after heading by 14.3-27.9%, 11.6-28.7% and 118.1-161.8 %, respectively. The yield of the OPT treatments was increased by 14.2-37.5% compared with CK, and there was a significant difference (p<0.05) between CK and OPT1 treatments. Harvest index and N partial factor productivity (PFP, kg grain yield per kg N applied) was clearly enhanced from 0.4 and 35.6 kg, respectively for CK to an average of 0.48 (p<0.05) and 77.6 kg (p<0.05) in the OPT treatments. These results indicated that the optimized N management increased the harvest index, yield and N use efficiency by decreasing the N application rate and postponing N application time, improved wheat population quality, controlled excessive growth in the vegetative stages and increased dry matter and N accumulation rates after heading.
基金Guizhou Provincial Science and Technology Foundation(No.[2017]1203)Guizhou Innovative Experts Program(No.[2017]27)+1 种基金Department of Education of Guizhou Province(No.[2019]121)Zunyi Normal University Doctoral Program(No.BS[2016]04)。
