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Cotton cultivation technology with chinese characteristics has driven the 70-year development of cotton production in china

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Journal of Integrative Agriculture 2022年第3期21卷 597-609页

作者： FENG Lu chi bao-jie DONG He-zhong Zhengzhou Research Base State Key Laboratory of Cotton Biology School of Agricultural Sciences Zhengzhou University Cotton Research Center Shandong Academy of Agricultural Sciences College of Agricultural Science and Technology Shandong Agriculture and Engineering University

Since the founding of the People’s Republic of china in 1949,significant achievements have been made in cotton production in *** has maintained its position as the world’s largest cotton producer for 33 years(1983–2015),with average annual increases of 3.5 and 3.9% in the unit yield and total output of cotton,*** production has played an extremely important role in the development of the national economy and the improvement of living *** the cotton planting area has been reduced in recent years,the total output has remained relatively unchanged due to the continuous increase in the unit ***’s dominant position in global cotton production is undoubtedly attributed to the progress and development of cotton cultivation *** the past 70 years,china has established a high-yielding and high-efficiency cotton cultivation mode that corresponds to its national conditions,including a large population and a limited land ***,cotton cultivation technology is constantly being innovated and developed to keep pace with the *** this paper,we review the development of cotton production and cultivation in china over the past 70 years,with a particular focus on the innovation and development of cotton cultivation technology with chinese *** review is intended to provide guidance for the sustainable development of china’s cotton production in the future and to provide a reference for global cotton production.

关键词： china cotton cultivation technology outlook

盐碱地冬油菜压青还田对土壤理化性质及花生产量的影响

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中国油料作物学报 2024年第3期46卷 604-612页

作者：李庆凯迟宝杰王鹤翔万俊张昕悦刘苹唐朝辉郭峰赵自超万书波山东农业工程学院山东济南250100 养分资源高效利用全国重点实验室农业农村部黄淮海平原农业环境重点实验室山东省农业科学院农业资源与环境研究所山东济南250100 山东省作物遗传改良与生态生理重点实验室山东农业科学院山东济南250100

为改良盐碱地,实现花生的高产高效,探讨冬油菜压青还田对盐碱地花生土壤理化性质的影响。通过大田试验,连续3年在黄河三角洲盐碱地定点设置冬闲地不播种冬油菜、冬油菜蕾薹期压青还田和开花期压青还田3种处理,研究了不同时期冬油菜压青... 详细信息

为改良盐碱地,实现花生的高产高效,探讨冬油菜压青还田对盐碱地花生土壤理化性质的影响。通过大田试验,连续3年在黄河三角洲盐碱地定点设置冬闲地不播种冬油菜、冬油菜蕾薹期压青还田和开花期压青还田3种处理,研究了不同时期冬油菜压青还田对花生结荚期根部土壤容重、孔隙度、土壤团聚体粒径分布、水稳定性等结构特征和土壤pH、速效养分、有机质、盐分等化学性质的影响。结果表明,冬油菜压青还田有效改良了土壤结构特征,显著降低了0~20 cm和20~40 cm土层土壤容重;0~20 cm土层>2 mm、1~2 mm和0.5~1 mm粒级土壤团聚体数量显著增加,2 mm土壤团聚体与有效养分呈显著正相关,与容重、盐分含量呈显著负相关;<0.25 mm团聚体、容重与速效养分呈负相关。因此,冬油菜压青还田通过改良盐碱地土壤结构特征、增加土壤有效养分和降低土壤可溶性盐分等途径形成相对有利花生生长的土壤理化性状,从而增加了花生产量。

关键词：冬油菜绿肥花生盐碱地土壤理化性质产量

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Control of cotton pests and diseases by intercropping:A review

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Journal of Integrative Agriculture 2021年第12期20卷 3089-3100页

作者： chi bao-jie ZHANG Dong-mei DONG He-zhong Cotton Research Center Shandong Academy of Agricultural SciencesJinan 250100P.R.China College of Life Sciences Shandong Normal UniversityJinan 250014P.R.China College of Agronomy Hebei Agricultural UniversityBaoding 071000P.R.China

Cotton(Gossypium hirsutum L.)is a globally important crop that is often damaged by pests and *** cotton pests and diseases management is dependent on chemical *** chemical pesticides are usually effective,long-term application of these pesticides often leads to increased insecticide resistance in the pests,fewer natural enemies,reduced natural control,and a degraded *** of increased environmental awareness and the need for sustainable cotton production,the control of cotton pests and diseases using biological means like intercropping is increasingly receiving *** of cotton with other crops can often boost the total yield and output of the intercropping system and provide significant economic benefits without sacrificing cotton *** also increases the number of natural enemies,and reduces the occurrence of cotton pests and diseases by altering the ecological structure and environmental conditions in the ***-based intercropping is an effective strategy to reduce the competition between cotton and grain or other economic crops for arable *** is also an important way to increase the populations of natural enemies in cotton fields for the management of pests and ***,inappropriate intercropping can also increase labor requirements and even result in inadequate control of pests and *** review focuses on the performance and the mechanisms of intercropping for reducing cotton pests and disease as well as on the effective management of intercropping *** risks and limitations,as well as the study approaches needed and the prospects of intercropping for the control of cotton pests and diseases,are also *** information is intended to aid researchers and growers in designing economically viable and ecologically friendly pest and disease management strategies that will reduce the use of chemicals and the cost of cotton production.

关键词： cotton-based intercropping pest management risk and limitation

A modern survey method for determining live loads based on multi-source and open-access data on the Internet

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Frontiers of Structural and Civil Engineering 2024年第8期18卷 1135-1147页

作者： chi XU Jun CHEN jie LI School of Civil Engineering Tongji UniversityShanghai 200092China The State Key Laboratory on Disaster Reduction in Civil Engineering Tongji UniversityShanghai 200092China

Sufficient survey data are required to describe the stochastic behaviors of live ***,due to manual and on-site operation required by traditional survey methods,traditional surveys face challenges like occupant resistance,high costs,and long implementation *** study proposes a new survey method to access live load data online and *** samples are acquired from multi-source,open-access and dynamically updated data on the *** change intervals,geometrical dimensions and object quantities are obtained from transaction information,building attributes and virtual reality models on real estate websites,*** object weights are collected from commodity information on e-commerce *** integration of the aforementioned data allows for the extraction of necessary statistics to describe a live load *** proposed method is applied to a live load survey in china,covering 20040 m^(2),with around 90000 samples acquired for object weights and load *** survey results reveal that about 70%−80%of the amplitude statistics are attributable to 1/6 of the total object types.

关键词： live load online survey method data acquisition data integration

Experimental and numerical study of hypervelocity impact damage on composite overwrapped pressure vessels

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Defence Technology（防务技术） 2024年第1期31卷 58-72页

作者： Yong-Pan Duan Run-Qiang chi bao-Jun Pang Yuan Cai Hypervelocity Impact Research Center Harbin Institute of TechnologyHarbin150080China College of Science Heilongjiang University of Science and TechnologyHarbin 150022China

Ground-based tests are important for studying hypervelocity impact(HVI)damage to spacecraft pressure vessels in the orbital debris *** analyzed the damage to composite overwrapped pressure vessels(COPVs)in the HVI tests and classified the damage into non-catastrophic damage and catastrophic *** proposed a numerical simulation method to further study non-catastrophic damage and revealed the characteristics and mechanisms of non-catastrophic damage affected by impact conditions and internal *** fragments of the catastrophically damaged COPVs were collected after the *** crack distribution and propagation process of the catastrophic ruptures of the COPVs were *** findings contribute to understanding the damage characteristics and mechanisms of COPVs by HVIs.

关键词： Orbital debris Hypervelocity impact Composite overwrapped pressure vessels Damage mechanisms

Piperine regulates the circadian rhythms of hepatic clock gene expressions and gut microbiota in high-fat diet-induced obese rats

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Food Science and Human Wellness 2024年第3期13卷 1617-1627页

作者： Weiyun Zhang chi-Tang Ho Wenlian Wei jie Xiao Muwen Lu Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods College of Food ScienceSouth China Agricultural UniversityGuangzhou 510642China Department of Food Science Rutgers UniversityNew Brunswick 08901USA

The interplay between the host circadian clock and microbiota has significant influences on host metabolism processes,and circadian desynchrony triggered by high-fat diet(HFD)is closely related to metabolic *** this study,the modulatory effects of piperine(PIP)on lipid metabolism homeostasis,gut microbiota community and circadian rhythm of hepatic clock gene expressions in obese rats were *** Sprague-Dawley(SD)rats were fed with normal diet(ND),HFD and HFD supplemented with PIP,*** 9 weeks,rats were sacrificed with tissue and fecal samples collected for circadian *** showed that chronic PIP administration ameliorated the obesity-induced alterations in lipid metabolism and dysregulation of hepatic clock gene expressions in obese *** gut microbial communities studied through 16S rRNA sequencing showed that PIP ameliorated the imbalanced nicrobiota and recovered the circadian rhythm of Lactobacillaceae,Desulfovibrionaceae,Paraprevotellaceae,and *** fecal metabolic profiles indicated that 3-dehydroshikimate,cytidine and lithocholyltaurine were altered,which were involved in the amino acid and fatty acid metabolism *** findings could provide theoretical basis for PIP to work as functional food to alleviate the lipid metabolism disorder,circadian rhythm misalignment,and gut microbiota dysbiosis with wide applications in the food and pharmaceutic industries.

关键词： Piperine Circadian clock Obesity Gut microbiota

A near-zero quiescent power breeze wake-up anemometer based on a rolling-bearing triboelectric nanogenerator

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Microsystems & Nanoengineering 2024年第2期10卷 241-249页

作者： Xianpeng Fu Zhichao Jiang jie Cao Zefang Dong Guoxu Liu Meiling Zhu chi Zhang CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing101400China School of Nanoscience and Engineering University of Chinese Academy of SciencesBeijing100049China Center on Nanoenergy Research Guangxi Colleges and Universities Key Laboratory of Blue Energy and Systems IntegrationSchool of Physical Science&TechnologyGuangxi UniversityNanning530004China Institute of Intelligent Flexible Mechatronics Jiangsu UniversityZhenjiang212013China College of Engineering Mathematics and Physical ScienceUniversity of ExeterExeterEX44QFUK

Wind sensors have always played an irreplaceable role in environmental information monitoring and are expected to operate with lower power consumption to extend service ***,we propose a breeze wake-up anemometer(B-WA)based on a rolling-bearing triboelectric nanogenerator(RB-TENG)with extremely low static *** B-WA consists of two RB-TENGs,a self-waking-up module(SWM),a signal processing module(SPM),and a wireless transmission *** two RB-TENGs are employed for system activation and wind-speed *** the ambient wind-speed exceeds 2 m/s,the wake TENG(W-TENG)and the SWM can wake up the system within 0.96 *** the same time,the SPM starts to calculate the signal frequency from the measured TENG(M-TENG)to monitor the wind speed with a sensitivity of 9.45 Hz/(m/s).After the wind stops,the SWM can switch off the B-WA within 0.52 s to decrease the system energy *** quiescent on-duty mode,the operating power of the B-WA is less than 30 nW,which can greatly extend the service lifetime of the *** integrating triboelectric devices and rolling bearings,this work has realized an ultralow quiescent power and self-waked-up wireless wind-speed monitoring system,which has foreseeable applications in remote weather monitoring,IoT nodes,and so on.

关键词： generator power service

Ultra-Robust and High-Performance Rotational Triboelectric Nanogenerator by Bearing Charge Pumping

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Energy & Environmental Materials 2024年第2期7卷 347-353页

作者： Xianpeng Fu Yuhan Qin Zhi Zhang Guoxu Liu jie Cao Beibei Fan Zhaozheng Wang Zheng Wang chi Zhang CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micronano Energy and Sensor Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences School of Nanoscience and Technology University of Chinese Academy of Sciences Center on Nanoenergy Research School of Physical Science and Technology Guangxi University

As an emerging technology to convert environmental high-entropy energy into electrical energy, triboelectric nanogenerator(TENG) has great demands for further enhancing the service lifetime and output performance in practical applications. Here, an ultra-robust and high-performance rotational triboelectric nanogenerator(R-TENG) by bearing charge pumping is proposed. The R-TENG composes of a pumping TENG(P-TENG), an output TENG(O-TENG), a voltage-multiplying circuit(VMC), and a buffer *** P-TENG is designed with freestanding mode based on a rolling ball bearing, which can also act as the rotating mechanical energy harvester. The output low charge from the P-TENG is accumulated and pumped to the noncontact O-TENG, which can simultaneously realize ultralow mechanical wear and high output performance. The matched instantaneous power of R-TENG is increased by 32 times under 300 r/min. Furthermore, the transferring charge of R-TENG can remain 95% during 15 days(6.4 × 10～6cycles)continuous operation. This work presents a realizable method to further enhance the durability of TENG, which would facilitate the practical applications of high-performance TENG in harvesting distributed ambient micro mechanical energy.

关键词： bearing charge pumping triboelectric nanogenerators ultralow mechanical wear ultra-robust voltage-multiplying circuit

Concerted Steric and Electronic Strategy in Thermostable Salicylaldiminato Nickel Catalysts for Ethylene(Co)polymerization

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chinese Journal of Polymer Science 2024年第8期42卷 1085-1092页

作者： Hong-Yu Ji Hong-Liang Mu Chun-Feng Tang Yu-Xing Zhang Yue chi Zhong-bao Jian Key Laboratory of Advanced Structural Materials Ministry of EducationSchool of Materials Science and EngineeringChangchun University of TechnologyChangchun 130012China State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China

Olefin polymerization is one of the most im portant chemical reactions in *** work presents a strategy that emphasizes the synergistic meta/poro-steric hindrance of N-aryl groups and electronic effects in newly synthesized neutral salicylaldiminato nickel *** nickel(Ⅱ)catalysts exhibit exceptional thermostability,ranging from 30℃to 130℃,demonstrating enhanced catalytic activities and broadly regulated polyethylene molecular weights(3-341 kg·mol^(-1))and controlled polymer branch density(2-102 brs/1000C).The preferred catalyst Ni3 with concerted steric and electronic effects enables the production of solid-state semi-crystalline polyethylene materials at temperatures below 90℃.Notably,Ni3 exhibits an impressive tolerance of 110℃and can withstand even the challenging polymerization temperature of 130℃,leading to the production of polyethylene wax and ***,functionalized polyethylene is produced.

关键词： Polyolefin Salicylaldiminato ligand Nickel catalyst Oil Wax