检索结果-南通市图书馆

Pedosphere 2010年第3期20卷 368-377页

作者： wang huo-yan, zhou jian-min, du chang-wen and chen xiao-qin state key laboratory of soil and sustainable agriculture, Institute of {3. science, chinese academy of sciences, nanjing 21.008 (China) [a] state key laboratory of {3. and sustainable agriculture Institute of Soil Science Chinese Academy of Sciences Nanjing 210008 (China)

soil potassium （K） deficiency has been increasing over recent decades as a result of higher inputs of N and P fertilizers concomitant with lower inputs of K fertilizers in China; however, the effects of interactions between N, P, and K of fertilizers on K status in soils have not been thoroughly investigated for optimizing N, P, and K fertilizer use efficiency. The influence of ammonium sulfate （AS）, monocMcium phosphate （MCP）, and potassium chloride application on K fractions in three typical soils of China was evaluated {3.ring 90-d laboratory soil incubation. The presence of AS significantly altered the distribution of native and added K in soils, while addition of MCP did not significantly affected K equilibrium in most cases. Addition of AS significantly increased water-soluble K （WSK）, decreased exchangeable K （EK） in almost all the soils except the paddy soil that contained considerable amounts of 2：1 type clay minerals with K added, retarded the formation of fixed K in the soils with K added, and suppressed the release of fixed K in the three soils without K added. These interactions might be expected to influence the K availability to plants when the soil was fertilized with AS. To improve K fertilizer use efficiency, whether combined application of AS and K was to be recommended or avoided should depend on K status of the soil, soil properties, and cropping systems.

关键词： fertilizers K availability K fixation K release

Effect of Nitrogen Fertilizers on Movement and Transformation of Phosphorus in an Acid soil

在线全文

学校读者我要写书评

暂无评论

Pedosphere 2005年第4期15卷 424-431页

作者： du Zhen-Yu zhou jian-min wang huo-yan du chang-wen chen xiao-qin state key laboratory of {3. and sustainable agriculture Institute of Soil Science Chinese Academy of Sciences Nanjing210008 （China）.

The effects of two different nitrogen fertilizers （urea and NH4C1） with monocalcium phosphate （MCP） on the movement and transformation of fertilizer P in soil microsites along with soil pH changes at different distances from the fertilizer application site were studied in an incubation experiment. A highly acidic red soil （Ultisol, pH 4.57） from south China with MCP fertilizer alone or in combination with NH4C1 or urea was added to the surface of soil cylinders and packed in wax blocks. After 7 and 28 days, the extraction and analysis of each 2 mm layer from the interface of the soil and fertilizer showed that added NH4C1 or urea did not change the movement distance of fertilizer P. However, P transformation was significantly affected （P 〈 0.05）. After 7 days, at 0-8 mm distance from the fertilizer site the addition of urea significantly decreased the water-extractable P concentration; however, after 28 days the effect of N addition had disappeared. Also,at limited distances close to the fertilizer site NH4Cl application with MCP significantly increased acid-extractable P and available P, while with the addition of urea they significantly decreased. Compared with application of MCP alone,addition of urea significantly increased soil pH in fertilizer microsites, whereas the addition of NH4Cl significantly decreased soil pH.

关键词： NH4Cl P movement P transformation red soil urea

Effect of Nitrogen on the Degradation of Cypermethrin and Its Metabolite 3.Phenoxybenzoic Acid in soil

在线全文

学校读者我要写书评

暂无评论

Pedosphere 2008年第5期18卷 638-644页

作者： XIE wen-Jun zhou jian-{3. wang huo-yan chen xiao-qin state key laboratory of {3. and sustainable agriculture Institute of Soil Science Chinese Academy of Sciences Nanjing 210008 （China） Shandong key laboratory of Eco-Environmental science for Yellow River Delta Binzhou University Binzhou 256603 （China）

Increasing use of pyrethroid insecticides has resulted in concerns regarding potential effects on human health and ecosystems. Cypermethrin and its metabolite 3.phenoxybenzoic acid(PBA) have exerted adverse biological impacts on the environment;therefore,it is critically important to develop different methods to enhance their degradation. In this study,incubation experiments were conducted using samples of an Aquic Inceptisol supplied with nitrogen(N) in the form of NH4NO3.at different levels to investigate the effect of nitrogen on the degradation of cypermethrin and PBA in soil. The results indicated that appropriate N application can promote the degradation of cypermethrin and PBA in soil. The maximum degradation rates were 80.0% for cypermethrin after 14 days of incubation in the treatment with N at a rate of 122.1 kg ha-1 and 41.0% for PBA after 60 days of incubation in the treatment with N at a rate of 182.7 kg ha-1. The corresponding rates in the treatments without nitrogen were 62.7% for cypermethrin and 27.8% for PBA. However,oversupplying N significantly reduced degradation of these compounds. Enhancement of degradation could be explained by the stimulation of microbial activity after the addition of N. In particular,dehydrogenase activities in the soil generally increased with the addition of N,except in the soil where N was applied at the highest level. The lower degradation rate measured in the treatment with an oversupply of N may be attributed to the microbial metabolism shifts induced by high N.

关键词： cypermethrin degradation nitrogen effect 3.phenoxybenzoic acid soil

Genome assembly of autotetraploid Actinidia arguta highlights adaptive evolution and enables dissection of important economic traits

在线全文

学校读者我要写书评

暂无评论

Plant Communications 2024年第6期5卷 173-192页

作者： Xue-Mei Lu xiao-Fen Yu Guo-Qiang Li ming-Hao Qu Huan wang Chuang Liu Yu-Ping Man xiao-Han jiang Mu-Zi Li jian wang Qi-Qi chen Rui Lei cheng-cheng Zhao Yun-Qiu zhou Zheng-wang jiang Zuo-zhou Li Shang Zheng chang Dong Bai-Lin wang yan-Xiang Sun Hui-qin Zhang Jie-Wei Li Quan-Hui Mo Ying Zhang Xin Lou Hai-Xu Peng Ya-Ting Yi He-Xin wang Xiu-Jun Zhang Yi-Bo wang Dan wang Li Li Qiong Zhang wen-Xia wang Yongbo Liu Lei Gao Jin-Hu Wu yan-chang wang CAS key laboratory of Plant Germplasm Enhancement and Specialty agriculture Wuhan Botanical GardenChinese Academy of SciencesWuhanHubeiChina key laboratory of Western China’s Environmental Systems(ministry of E{3.cation) College of Earth and Environmental SciencesLanzhou UniversityLanzhouGansuChina College of Life sciences University of Chinese Academy of SciencesBeijingChina Wuhan Frasergen Bioinformatics Co. LtdWuhanHubeiChina Institute of soil and Fertilizer Anhui Academy of Agricultural SciencesHefeiChina College of Agricultural sciences Xichang UniversityXichangSichuanChina Department of Horticulture Heilongjiang Academy of Agricultural SciencesHarbinHeilongjiangChina College of Life sciences Langfang Normal UniversityLangfangHebeiChina Institute of Horticulture Zhejiang Academy of Agricultural SciencesHangzhouZhejiangChina Guangxi Institute of Botany Chinese Academy of SciencesGuilinGuangxiChina Xi’an Botanical Garden of Shaanxi Province Institute of Botany of Shaanxi ProvinceXi’anShaanxiChina Institute of Modern Agricultural Research Dalian UniversityDalianLiaoningChina Bioinformatics Center College of Plant Science and TechnologyBeijing University of AgricultureBeijingChina College of agriculture Eastern Liaoning UniversityDandongLiaoningChina Dalian Institute of Chemical Physics Chinese Academy of SciencesDalianLiaoningChina state Environmental Protection key laboratory of Regional Eco-process and Function Assessment Chinese Research Academy of Environmental SciencesBeijingChina Hubei Hongshan laboratory WuhanHubeiChina The New Zealand Institute for Plant and Food Research Limited AucklandNew Zealand

Actinidia arguta,the most widely distributed Actinidia species and the second cultivated species in the genus,can be distinguished from the currently cultivated Actinidia chinensis on the basis of its small and smooth fruit,rapid softening,and excellent cold *** evolution of tetraploid Actinidia species and the genetic basis of their important agronomic traits are still ***,we generated a chromosome-scale genome assembly of an autotetraploid male *** *** genome assembly was 2.77 Gb in length with a contig N50 of 9.97 Mb and was anchored onto 116 *** and clustering of 101 geographically representative accessions showed that they could be divided into two geographic groups,Southern and Northern,which first diverged 12.9 million years *** underwent two prominent expansions and one demographic bottleneck from the midPleistocene climate transition to the late *** genomics studies using paleoclimate data enabled us to discern the evolution of the species’adaptation to different historical *** genes(AaCEL1,AaPME1,and AaDOF1)related to flesh softening were identified by multi-omics analysis,and their ability to accelerate flesh softening was verified through transient expression assays.A set of genes that characteristically regulate sexual dimorphism located on the sex chromosome(Chr3.or autosomal chromosomes showed biased expression during stamen or carpel *** chromosome-level assembly of the autotetraploid *** genome and the genes related to important agronomic traits will facilitate future functional genomics research and improvement of ***.

关键词： kiwiberry dioecism adaptive evolution paleoclimate GEA rapid softening

Influence of Humic Acid on Interaction of Ammonium and Potassium Ions on Clay minerals

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Pedosphere 2013年第4期23卷 493-502页

作者： ZHANG wen-Zhao chen xiao-{3. zhou jian-min LIU Dai-Huan wang huo-yan du chang-wen state key laboratory of {3. and sustainable agriculture Institute of Soil Science Chinese Academy of Sciences key laboratory of Agro-Ecological Processes in Subtropical Region Institue of Subtropical Agriculture Chinese Academy of Sciences

Interaction of ammonium (NH+4) and potassium (K+) is typical in field soils. However, the effects of organic matter on interaction of NH+4 and K+have not been thoroughly investigated. In this study, we examined the changes in major physicochemical properties of three clay minerals (kaolinite, illite, and montmorillonite) after humic acid (HA) coating and evaluated the influences of these changes on the interaction of NH+4 and K+on clay minerals using batch experiments. After HA coating, the cation exchange capacity (CEC) and specific surface area (SSA) of montmorillonite decreased significantly, while little decrease in CEC and SSA occurred in illite and only a slight increase in CEC was found in kaolinite. Humic acid coating significantly increased cation adsorption and preference for NH+4, and this effect was more obvious on clay minerals with a lower CEC. Results of Fourier transform infrared spectrometry analysis showed that HA coating promoted the formation of H-bonds between the adsorbed NH+4 and the organo-mineral complexes. HA coating increased cation fixation capacity on montmorillonite and kaolinite, but the opposite occurred on illite. In addition, HA coating increased the competitiveness of NH+4 on fixation sites. These results showed that HA coating affected both the nature of clay mineral surfaces and the reactions of NH+4 and K+with clay minerals, which might influence the availability of nutrient cations to plants in field soils amended with organic matter.

关键词： adsorption illite kaolinite montmorillonite organo-mineral complex

Enhancement of Phosphorus Solubility by Humic Substances in Ferrosols

在线全文

学校读者我要写书评

暂无评论

Pedosphere 2008年第4期18卷 533-538页

作者： HUA Quan-Xian LI jian-Yun zhou jian-{3. wang huo-yan du chang-wen chen xiao-qin Zhengzhou University Zhengzhou 450001 （China） state key laboratory of {3. and sustainable agriculture Institute of Soil Science Chinese Academy of Sciences Nanjing 210008 （China） Zhengzhou Institute of Aeronautical Industry Management Zhengzhou 450015 （China）

An investigation was conducted to study the effect of humic substance (HS) on the phosphorus (P) solubility in acidic soil. The soil (2.5 g), HS (0, 0.5, and 2.5 g), and P as monocalcium phosphate (0.3. and 1.25 g P kg-1 soil) were mixed with 50 mL distilled water and two different sequences of adding HS and P were used. The results indicated that the P concentration in water and 0.01 mol L-1 CaCl2 solution increased with increasing amounts of humic substance. The concentrations of Fe and Al were also increased. However, Olsen P decreased with increasing amount of humic substance. Water-soluble P concentrations from P rates at 0.3. and 1.25 g P kg-1 soil in the treatment with 0.5 g (2.5 g) humic substance addition were 3.0% and 70% (500% and 90%) higher, respectively, than those in the treatment with no humic substance addition. P extracted by 0.01 mol L-1 CaCl2 in the treatments with 0.5 and 2.5 g humic substance addition was increased by 400% and 540%, respectively, compared with that in the treatment without humic substance at the rate of 0.3. g P kg-1 soil, while the corresponding P concentrations were increased by 80% and 90% at the rate of 1.25 g P kg-1 soil. The order of mixing humic substance and phosphate did not significantly affect desorbed P and labile P extracted with CaCl2.

关键词： aluminium Ferrosols humic substance iron phosphorus

Long-term straw return influenced ammonium ion retention at the soil aggregate scale in an Anthrosol with rice-wheat rotations in China

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative agriculture 2022年第2期21卷 521-531页

作者： ZHANG wen-zhao chen xiao-{3. wang huo-yan WEI wen-xue zhou jian-min key laboratory of Agro-ecological Processes in Subtropical Region and Taoyuan Station of Agro-Ecology Research Institute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125P.R.China state key laboratory of {3. and sustainable agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008P.R.China

soil aggregates are an important controlling factor for the physico-chemical and biological processes such as ammonium(NH;) retention. Straw return to the field is increasingly recommended to promote soil carbon(C) sequestration and improve crop yields. However, the effects of straw return on NH;retention at soil aggregate level in agricultural soils have seldom been investigated. This study aimed to evaluate the influences of long-term straw return on NH;adsorption and fixation in microaggregates(soil organic carbon(SOC) oxidization. soil samples were collected from plots of three treatments, i.e., no fertilizer(CK), inorganic NPK fertilizers(NPK), and inorganic NPK fertilizers with rice straw return(NPKS), from a 20-year-old field trial with rice-wheat rotations in Taihu Lake Region, China. soil aggregates were separated using wet-sieving method. The SOC of microaggregates was oxidized by H;O;. The results showed that longterm straw return significantly increased SOC and NH;adsorption, but inhibited NH;fixation in microaggregates. NH;adsorption potential and strength-obtained from adsorption isotherms-increased, but NH;fixation decreased along with increasing SOC in microaggregates, indicating the important role of SOC in NH;adsorption and fixation. This was verified by the SOC oxidization test that showed a relative decrease in NH;adsorption potential for the NPKS treatment and an increase in NH;fixation in all three treatments. Therefore, long-term straw return influences NH;adsorption and fixation by enhancing SOC content and could improve N availability for crop uptake and minimize applied N fertilizer losses in rice-wheat cropping systems.

关键词： soil organic carbon microaggregates NH4+ adsorption fixation

不同改性黏土矿物吸附净化磷污染水体的性能比较

在线全文

学校读者我要写书评

暂无评论

土壤通报 2010年第1期41卷 43-46页

作者：干方群周健民王火焰马毅杰杜昌文陈小琴中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室江苏南京210008 中国科学院研究生院北京100049

比较了酸、热及其复合改性对凹凸棒石黏土、膨润土和高岭土等3.黏土矿物吸附净化不同程度磷污染水体能力的影响。结果发现,2%浓度酸处理、3.0℃热活化及酸热复合改性均可以显著提高凹凸棒石黏土的磷吸附净化能力,且以复合改性效果最好... 详细信息

比较了酸、热及其复合改性对凹凸棒石黏土、膨润土和高岭土等3.黏土矿物吸附净化不同程度磷污染水体能力的影响。结果发现,2%浓度酸处理、3.0℃热活化及酸热复合改性均可以显著提高凹凸棒石黏土的磷吸附净化能力,且以复合改性效果最好,Ⅴ类和劣Ⅴ类水的磷去除率均比原土提高3.%以上;酸、热改性均能显著提高膨润土的磷吸附净化能力,但综合不同程度磷污染水体来看,热活化略优于酸改性,但酸热复合改性没有呈现更佳的效果;热改性显著提高高岭土的磷吸附净化能力,而酸改性却不同程度地降低了高岭土的磷吸附净化能力,酸热复合改性的效果亦不如热单独改性。结果表明,在针对不同程度磷污染水体时需根据黏土矿物特性选用酸处理、热活化或酸热复合改性方法来提高污水的吸附净化效率。

关键词：黏土矿物改性凹凸棒石黏土膨润土高岭土磷吸附净化

Nitrous Oxide Production in a Sequence Batch Reactor Wastewater Treatment System Using Synthetic Wastewater

在线全文

学校读者我要写书评

暂无评论

Pedosphere 2006年第4期16卷 451-456页

作者： MAO jian jianG xiao-{3. yanG Lin-Zhang ZHANG jian QIAO {3.g-Yun HE chen-Da YIN Shi-Xue state key laboratory of {3. and sustainable agriculture Institute of Soil Science Chinese Academy of SciencesNanjing 210008 （China） Institute of soil science Chinese Academy of Sciences Nanjing 210008 （China） College of Environmental science and Engineering Yangzhou University Yangzhou 225009 （China）

The rate of nitrous oxide emission from a laboratory sequence batch reactor （SBR） wastewater treatment system using synthetic wastewater was measured under controlled conditions. The SBR was operated in the mode of 4 h for aeration, 3.5 h for stirring without aeration, 0.5 h for settling and drainage, and 4 h of idle. The sludge was acclimated by running the system to achieve a stable running state as chemical oxygen demand, NO2^-, NO3.-, NH4^＋, pH, and N2O. indicated by rhythmic changes of total N, dissolved oxygen, Under the present experimental conditions measured nitrous oxide emitted from the off-gas in the aerobic and anaerobic phases, respectively, accounted for 8.6%-16.1% and 0-0.05% of N removed, indicating that the aerobic phase was the main source of N2O emission from the system. N2O dissolved in discharged water was considerable in term of concentration. Thus, measures to be developed for the purpose of re{3.cing N2O emission from the system should be effective in the aeration phase.

关键词： denitrification nitrification nitrous oxide sequence batch reactor wastewater treatment system

Significant loss of soil inorganic carbon at the continental scale

在线全文

学校读者我要写书评

暂无评论

National science Review 2022年第2期9卷 13-20页

作者： xiao-Dong Song Fei yang Hua-Yong Wu Jing Zhang De-cheng Li Feng Liu Yu-Guo Zhao Jin-Ling yang Bing Ju Chong-Fa Cai Biao Huang Huai-Yu Long Ying Lu Yue-Yu Sui Qiu-Bing wang Ke-Ning Wu Feng-Rong Zhang ming-Kui Zhang zhou Shi Wan-Zhu Ma Gang Xin Zhi-Ping Qi qing-Rui chang En Ci Da-Gang Yuan yang-Zhu Zhang Jun-Ping Bai Jia-Ying chen Jie chen Yin-Jun chen Yun-Zhong Dong Chun-Lan Han Ling Li Li-ming Liu jian-Jun Pan Fu-Peng Song Fu-Jun Sun Deng-Feng wang Tian-Wei wang Xiang-Hua Wei Hong-Qi Wu Xia Zhao qing zhou Gan-Lin Zhang state key laboratory of {3. and sustainable agriculture Institute of Soil Science Chinese Academy of Sciences College of Advanced Agricultural sciences University of Chinese Academy of Sciences College of Resources and Environment Huazhong Agricultural University Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences College of Natural Resources and Environment South China Agricultural University Northeast Institute of Geography and Agroecology Chinese Academy of Sciences College of Land and Environment Shenyang Agricultural University School of Land science and Technology China University of Geosciences College of Land science and Technology China Agricultural University College of Environmental and Resource sciences Zhejiang University Institute of Digital agriculture Zhejiang Academy of Agricultural Sciences College of agriculture Heilongjiang Bayi Agricultural University Tropical Crops Genetic Resources Institute Chinese Academy of Tropical Agricultural Sciences College of Natural Resources and Environment Northwest A & F University College of Resources and Environment Southwest University College of Resources Sichuan Agricultural University College of Resources and Environment Hunan Agricultural University Institute of Agricultural Product Quality Standard and Testing Research Tibet Academy of Agricultural and Animal Husbandry Sciences School of Agricultural sciences Zhengzhou University Institute of agriculture Environment and Resources Research Shanxi Academy of Agricultural Sciences College of Resources and Environment Henan Agricultural University College of Resources and Environment China Agricultural University College of Resources and Environmental sciences Nanjing Agricultural University College of Resources and Environment Shandong Agricultural University Agricultural College Guangxi University College of Grassland and Environment science Xinjiang Agricultural University College of Geographical science Qinghai Normal University

Widespread soil acidification due to atmospheric acid deposition and agricultural fertilization may greatly accelerate soil carbonate dissolution and ***,to date,few studies have addressed these ***,we use meta-analysis and nationwide-survey datasets to investigate {3.es in soil inorganic carbon(SIC) stocks in *** observe an overall decrease in SIC stocks in topsoil(0-3. cm)(11.3. g C m-2yr-1) from the 1980 s to the 2010 *** SIC stocks have decreased by～8.99±2.24%(1.3.±0.3. Pg C).The average SIC losses across China(0.046 Pg C yr-1) and in cropland(0.016 Pg C yr-1) account for～17.6%-24.0% of the terrestrial C sink and 57.1% of the soil organic carbon sink in cropland,*** deposition and climate {3.e have profound influences on SIC *** estimate that～19.12%-19.47% of SIC stocks will be further lost by *** consumption of SIC may offset a large portion of global efforts aimed at ecosystem carbon sequestration,which emphasizes the importance of achieving a better understanding of the indirect coupling mechanisms of nitrogen and carbon cycling and of effective countermeasures to minimize SIC loss.

关键词： China soil inorganic carbon stocks global change carbonate soil acidification