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| 1 | Effects of Waxy Maize Relay Intercropping and Residue Retention on Rhizosphere Microbial Communities and Vegetable Yield in a Continuous Cropping System显示文摘Intercropping and residue retention contribute to high yield and quality of crops. However, their coupled effects on rhizospheric microbial communities under a continuous vegetable cropping system have not been adequately addressed. The objective of the present study was to assess the effects on soil microbial community and yields of waxy maize(Zea mays L.) intercropped with or without residue retention in a continuous broccoli(Brassica oleracea L.) cropping system, i.e., relay intercropping of broccoli and waxy maize(B/M-B), relay intercropping of broccoli and waxy maize with residue retention(B/MR-B), and broccoli monoculture(B-B). The biomass yields of spring and autumn vegetables in B/MR-B were 16.3%–32.5% and 30.1%–46.1% higher than those of B-B,respectively. Autumn vegetable economic yields of B/MR-B were 28.2%–40.3% higher than B-B. The average well color development followed the order: B/MR-B > B/M-B > B-B. The Shannon index, Simpson index, and Mc Intosh index were higher in B/MR-B than under monoculture. A principal component analysis showed that microbial communities of B/MR-B soils differed from those of B/M-B and B-B soils. Carbon(C) sources utilized by the rhizosphere microorganisms were mainly carbohydrates, carboxylic acids, amino acids, and polymers; however, the C sources for the soil microbial community differed between intercropping and monoculture. The communities from B/MR-B preferred amino acids and polymers. Available nitrogen(N), potassium(K), and phosphorus(P) had an obvious impact on soil microbial community. Additionally, the C source utilization by microorganisms was significantly affected by p H and available K and P. Cropping system diversification through relay intercropping and residue retention effectively improved the functional diversity of the soil microbial communities and increased the yields of vegetables. | ZHANG Xuepeng NING Tangyuan HAN Huifang SUN Tao LI Geng LI Zengjia Rattan LAL | 2018 | Pedosphere2018，28，1： | 5 |
| 2 | Ultrahigh energy density and improved discharged efficiency in bismuth sodium titanate based relaxor ferroelectrics with A-site vacancy显示文摘Novel A-site deficient(1-x-y)Bi_(0.5)Na_(0.5)TiO_(3-x)BaTiO_(3-y)Bi_(0.2)Sr_(0.7)TiO_(3)lead-free relaxor ferroelectrics have been explored for energy storage property.Particularly slim polarization hysteresis(P-E)loops are observed in 0.655Bi_(0.5)Na_(0.5)TiO_(3)-0.065BaTiO_(3)-0.28Bi_(0.2)Sr_(0.7)□_(0.1)TiO_(3)(6.5BNBT-BST)at ambient temperature resulting in a giant recoverable energy density(W_(rec)=1.5 J cm^(-3))and extremely high efficiency(η=90%)at 100 kV cm^(-1),which are closed related to the track of P-E loops.As the addition of Bi_(0.2)Sr_(0.7)TiO_(3)(BST)content,the ergodic relaxor phase becomes dominant with dynamic polar nanoregions attributed to the absence of ferroelectric domain in the relaxor phase.Furthermore,the recoverable energy density exhibits small variation in elevated temperature where the depressed polarization is compensated by almost hysteresis free loops(ηup to 97%).The achievement of these characteristics in P-E loops provides that Bi_(0.2)Sr_(0.7)TiO_(3)tailoring by A-site vacancies is a potential route when designing new relaxor ferroelectrics for energy-storage applications. | Xiao Liu Jing Shi Fangyuan Zhu Huiling Du Tangyuan Li Xiangchun Liu Hai Lu | 2018 | Journal of Materiomics2018，4，3： | 3 |
| 3 | Coupling effects of urea types and subsoiling on nitrogen–water use and yield of different varieties of maize in northern China显示文摘 | Hengyu Hu Tangyuan Ning Zengjia Li Huifang Han Zongzheng Zhang Shujun Qin Yanhai Zheng | 2013 | Field Crops Research2013，，： | 2 |
| 4 | Coupling effects of urea types and subsoiling on nitrogen-water use and yield of differ- ent varieties of maize in northern China 显示文摘 | Hu Hengyu Ning Tangyuan Li Zengjia | 2013 | Field Crops Research2013，142，： | 1 |
| 5 | Coupling effects of urea types and subsoiling on nitrogen–water use and yield of different varieties of maize in northern China显示文摘 | Hengyu Hu Tangyuan Ning Zengjia Li Huifang Han Zongzheng Zhang Shujun Qin Yanhai Zheng | 2013 | Field Crops Research2013，，： | 1 |
| 6 | Potassium nitrate application alleviates sodium chloride stress in winter wheat cultivars differing in salt tolerance显示文摘 | Yanhai Zheng Aijun Jia Tangyuan Ning Jialin Xu Zengjia Li Gaoming Jiang | 2008 | Journal of Plant Physiology2008，，14： | 1 |
| 7 | Oxygen vacancy migration and its lattice structural origin in A-site non-stoichiometric bismuth sodium titanate perovskites显示文摘Off-stoichiometry of perovskite structural Bi0.5Na0.5TiO3(BNT)ferroelectrics can give rise to considerable oxide-ion conductivity.The inherent structural characteristics are urgent to be resolved due to its particular sensitivity of the conduction mechanism to the nominal composition and synthesis process.Herein,a thorough study of the temperature-dependent neutron,X-ray diffraction and Raman spectrum is carried out on a series of equivalently substituted A-site deficient non-stoichiometric and pristine BNT.Phase transition and defect association are systemically investigated in these dominated rhombohedral phases at room temperature,associated with well saturated ferroelectric states.Significant structural evolution identified by Rietveld refinements and the origin of the electrical performance are clarified at elevated temperatures,focusing on the subtle distortions of ionic displacements,oxygen octahedral tilts and local chemical environments for oxygen vacancies.The ion migration ability mediated by oxygen vacancies that are not energetically favorable in BNT mainly depends on the external substitutional disorder,and is strongly affected by the dopant concentration.Together with the lone pair substitution concept,superior oxide ionic conductivity is achieved,and an alternative strategy is provided in designing BNT based oxide ion conductors. | Jing Shi Xiao Liu Fangyuan Zhu Wenchao Tian Yuanhua Xia Tangyuan Li Rongrong Rao Tao Zhang Laijun Liu | 2022 | Journal of Materiomics2022，8，3： | 0 |
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