In order to explore the key technical factors of sugar-free tissue culture technology of blueberry in seedling production, conventional tissue culture seedlings of ‘Emerald’ varieties were used as material. The effects of different plant growth regulators and concentrations, solid matrix and nutrient solution ratio（solid-liquid ratio） and antibacterial agents on the rooting and contamination of blueberry tissue culture seedlings were studied. In order to provide scientific basis for the further optimization of blueberry sugar-free tissue culture scheme and the production of high-quality seedlings in blueberry industry. The results showed that the improved WPM medium supplemented with 1.0 mg/L IBA or 1.0 mg/L NAA had better rooting effect on blueberry seedlings. The ratio of 1.80 L solid matrix（vermiculite） to 1.25 L nutrient solution was the best,both of which could promote the rooting of blueberry seedlings and increase the number and length of roots. The antibacterial effect of Zhipeijing was the best, which could effectively reduce the pollution rate to 13.65%.
声乐艺术是一种表演艺术,是人体发出的音调与语言相结合的产物.声乐艺术家需要运用各种声音效果和演唱技巧,如音域、音色、呼吸控制等,来实现表达情感、传达信息、创造美感的表演目的. "一切景语皆情语".声乐艺术作为人们情感抒发的直接形式,其对自然景观、百姓生活、乡村经济、文化教育等主题的描述生动而具体.声乐艺术与乡村振兴深度融合,二者相辅相成、互为助益.一方面,乡土是声乐艺术的源泉和创新土壤;另一方面,声乐艺术在乡村振兴中发挥着塑造民风民俗、培养艺术人才、催生新兴业态的重要作用.
To select the best fresh grape varieties suitable for development in the Guanzhong region of Shaanxi Province and to optimise the structure of existing fresh grape varieties in the region,new grape varieties selected by the main grape breeding units in China were introduced and tested using a combination of field observations and indoor measurements,including the phenological period,growth and fruit performance,and economic and biological traits,etc.The fruit was harvested at maturity to determine the fruit quality.Finally,the fruit quality was comprehensively evaluated using principal component analysis.The analysis concluded that'Nantaihutezao','Tiangongmoyu','Ruiduhongyu','Shenhua',and'Huangjinmi'performed well and were suitable for rain-shelter cultivation in the Guanzhong region of Shaanxi Province.
体育职业教育的核心目标是通过一系列系统性的知识传授、技能训练和实践操作,使学生深入掌握体育专业的理论知识,并具备相应的实际操作技能,从而满足体育行业的发展需求.从广义上看,体育职业教育的内容非常丰富.首先,它涵盖了体育科学理论、运动训练理论、运动修复等一系列理论教育,为学生提供了坚实的理论基础.其次,技能教育也是其重要组成部分,包括体力训练、技能训练和实践操作等,旨在提高学生的实际技能水平.再次,能力教育也是体育职业教育的重要一环,涉及项目管理、赛事组织、队伍建设、体育教学、体育宣传等,这些都是为了培养学生在实际工作中所需的各种能力.最后,职业道德、职业操守、职业素养等也是体育职业教育的重要内容,提高学生的综合素质,将为他们未来职业生涯打下坚实基础.
水果价格可以将供给方、流通方和需求方连接在一起,为市场的高效运行提供必要的信息和参考,因此对水果价格影响因素的系统性研究有着重要的理论和现实意义.基于2002-2021年季度数据,使用平稳性检验、协整性检验、BVAR模型、脉冲响应函数等多个方法研究了水果价格和影响因素间的定量关系.结果表明,影响因素中只有农业生产资料价格指数、城镇化率、鲜果消费价格指数和蔬菜生产价格指数4个变量对水果生产价格有显著影响,并按照从大到小的顺序对水果价格产生正向冲击.最终给出了相应的对策建议.
Objective to study the detection methods of mepiquat chloride and uniconazole residues in plum.Analysis residue difference between mepiquat chloride and uniconazole under the same application measures,and risk assessment of chronic and acute dietary intake.Residue of mepiquat chloride and uniconazole was extracted by QuEChERS method,detected by LC-MS/MS.Residues of mepiquat chloride and uniconazole in plums after storage for 183 days,the degradation rates are 13％and 14％respectively,the residual quantity is relatively stable during storage under the conditions of this experiment.The residue levels of mepiquat chloride and uniconazole on plum in harvesting and 7 days after harvesting were all＜0.01 mg/kg.The national estimated daily intake of mepiquat chloride and uniconazole residue were 0.355 918 mg and 0.033 007 mg,respectively,and the ADI％was calculated according to formula and found to he 2.90％and 2.62％,respectively.The national estimated short term intake of mepiquat chloride and uniconazole in plums for all population groups and children(8 months to 16 years)were all 0.000 095 4 mg,for women of childbearing age(13～50 years)and general population(＞1 year)and adult groups were all 0.000 127 mg.The ARfD％of mepiquat chloride in plums for all population groups and children(8 months to 16 years)were all 0.031 8％,for women of childbearing age(13～50 years)and general population(＞1 year)and adult groups were all 0.042 3％.The ARfD％of uniconazole in plums for all population groups and children(8 months to 16 years)were all 0.190 8％,for women of childbearing age(13～50 years)and general population(＞1 year)and adult groups were all 0.254 0％.When the substrate,application dosage,and harvest interval are consistent,significant difference in mepiquat chloride and uniconazole residual amount 2 hour harvesting interval,there was no significant difference in mepiquat chloride and uniconazole residual amount 7 days and 14 days harvesting interval,the original deposition amounts is related to the type of pesticide,the final residual is related to harvesting interval and degradation half life of pesticide.
"大思政课"是基于传统思政课内涵延伸、理念更新、视野开阔和格局拓展所形成的新的思政教育课堂模式."大思政课"这一理念和模式应运而生,旨在通过更加开放、多元、实践的教学方式,帮助学生深入了解我国国情、民情,树立正确的世界观、人生观和价值观,增强其爱国主义情怀和社会责任感.
我国作为农业大国,农业农村农民问题一直是国家的基本问题.乡村振兴战略的实施,正是要通过促进农业农村发展来彻底解决我国"三农"问题.在此过程中,人才培养至关重要.高职院校作为人才培养的重要阵地,要以满足乡村振兴的人才需求为目标,努力培养一支懂农业、爱农村、爱农民的"三农"工作队伍.其中,向高职大学生根植"三农"情怀,是高职院校培养"三农"工作队伍的要旨所在,也是实现乡村振兴的重要途径.
随着计算机技术的飞速发展,我们迎来了一个数据膨胀的时代,大数据的兴起与普及已然形成了一个与之息息相关的庞大产业生态.不论是在商业决策、健康管理,还是在城市规划、科学研究等领域,大数据的应用都愈发广泛,其影响力和价值日益凸显.在此背景下,大数据与现代农业的深度交互产生了海量的农业大数据.这些数据涵盖了土壤质量、气象变化、作物生长、农产品销售等各个方面,既有实时的数据监测,也有历史数据的积累与分析.它们形成了一个庞大而复杂的数据网络,为现代农业的发展提供了强大的"数智力量".
2003年,时任联合国秘书长的安南在讲话中提到"Inclusive Finance"一词,指出贫困人口无法获得全面金融服务的困境,并正式提出了普惠金融的概念.普惠性虽不是金融与生俱来的属性,但随着社会发展和各类金融活动的不断深化,增强金融的包容性、降低金融的排斥性,推动人人获得平等的享受金融服务的权利成为金融服务发展的必然趋势.基于此,普惠金融成为我国金融体系中重要的、基础性的组成部分.2013年,在党的十八届三中全会上我国首次使用了"普惠金融"的概念.
针对广东柚果品质参差不齐和难以优质优价的难题,提出利用数字化技术对柚果供应链进行升级.首先从产业概况、产品流通模式、加工流程3个方面调研分析了当前广东柚果的供应链业务场景,明确了广东柚果的优质优价制约因素:一是种植端优果产出率低;二是加工流通端缺少优果识别设备;三是消费端难以认知优果.其次从物联网设施设备应用情况、信息需求与获取渠道、信息基础设施状况等3个方面分析了广东柚果产地端的数字化现状.在此基础上,搭建了柚果产业数字化平台理论框架,并提出促进广东柚果优质优价的数字化提升路径:一是开展线上业务模式,推动"双流"信息统一;二是开发无损检测设备,实现品质数字分级;三是集成专业技术知识,开展智慧农技服务;四是构建可信溯源模型,提升产业品牌价值;五是建立产业大数据库,推动数据价值共享.对促进广东柚果供应链数字化转型升级和优质优价提供了新的思路和路径.
The 54 durian germplasm resources planted in Hainan were analyzed by fluorescent SSR molecular marker technology to analyze SSR polymorphism,clustering,population structure and genetic diversity.The result show that 19 pairs of SSR primers with high polymorphism were screened.A total of 117 polymorphisms alleles were detected by DNA amplification,with an average number of 6.158,an average effective allele of 3.398,an average Shannon index of 1.372,an average of 0.689 for observed heterozygosity and expected heterozygosity,and an average of 0.643 for polymorphic information content,which has certain genetic diversity.Based on the cluster analysis of UPGMA genetic distance,at the genetic distance of 0.6,54 germplasms can be divided into 3 groups,the first group has a total of 45 germplasm resources,including different durian varieties introduced in different countries.The second group has a total of 8 resources,all of which are introduced to different countries'Musang King'durian.The third group has a total of 1 resource,which is a kind of red durian introduced to Thailand.Taking the genetic distance of 0.3 as the threshold,the first group can be divided into 9 subgroups.Based on Structure,54 samples can be divided into 5 subgroups.Comprehensive cluster and population structure analysis identified some varieties of unknown germplasm resources.The analysis of genetic variation,genetic distance and genetic differentiation of different subpopulations showed that individual variation was the main source of total variation,subgroup 5 had the greatest genetic distance and genetic differentiation degree with other subpopulations,and the overall gene flow of different subpopulations was large and the degree of genetic differentiation was low.
随着我国在全球舞台上的崛起,我国乡村振兴战略的实施已经吸引了世界各地的广泛关注.荷兰农业问题专家艾菲特·雅可布森指出:"乡村振兴能够有力推动农业现代化进程,进一步释放农村的潜在活力,并有效提升农民的幸福感.农村的持续发展和进步,将为中国经济实现更均衡、可持续的发展奠定坚实基础."在这一大背景下,我国乡村建设的人才需求也呈现出了多元化和复合化的新特点.值得一提的是,英语人才的培养已然成为乡村人才振兴的一个重要方向.随着我国乡村与世界的交流、合作日益频繁,熟练掌握英语的人才将更好地助力我国乡村发展的国际化进程,推动我国农村地区在经济、文化、教育等多领域的快速发展.
In order to explore the effect of gibberellin treatment on anthocyanin synthesis in fresh grape peel.The early maturing grape cultivar'Zaoheibao'and the late maturing grape cultivar'Wanheibao'were used as research materials.At the end of the blooming period,they were soaked with 25 mg/L gibberellin(GA,),and then were soaked with 50 mg/L GA3 after 12 days,with were soaked with water as the control.The result showed that color index of grape after 30 days treated with gibberellin,were rapidly increased.During gibberellin treatment 30 days to fruit maturity,the anthocyanin content in the peel of'Zaoheibao'grape was significantly increased.During 50 to 70 days with gibberellin treatment,the total anthocyanin content of'Wanheibao'grape was significantly higher than the control.The significant changes were observed of the key anthocyanin synthase enzymes activity,such as phenylalanine ammonia lyase(PAL),dihydroflavonol reductase(DFR),anthocyanin synthase(ANS),and flavonoid glycosyltransferase(UFGT)in grape peel treated with gibberellin.The key anthocyanin synthesis genes DFR,ANS,and UFGTat the early stage of grape color transformation also were changed.In summary,the gibberellin treatment promoted significantly early and late ripening grape color conversion.
《中共中央 国务院关于做好2023年全面推进乡村振兴重点工作的意见》明确提出,"加快完善县乡村电子商务和快递物流配送体系,建设县域集采集配中心,推动农村客货邮融合发展,大力发展共同配送、即时零售等新模式,推动冷链物流服务网络向乡村下沉".数据显示,2023年上半年农村地区的快递收投量已超100亿件,农村实物商品网络零售额约1.02万亿元,电商带动农产品进城和工业品下乡的总产值超7 000亿元.由此可见,电子商务和快递物流配送下沉已经为农业农村发展注入了强劲动力,基于电子商务的农产品物流模式创新迫在眉睫.
民间舞蹈是中华优秀传统文化的鲜活体现,它如同一部行走在广袤大地上的人间大剧,生动地展示了各族人民丰富多彩的生活和情感.历史长河中,民间舞蹈经历了兴衰更迭,曾经有过衰落、有过挫折.然而正是在这些困境中,民间舞蹈持续焕发出属于自己的新的生命力和活力.
To assess crop load effect on yield and fruit quality of peach fruits,an experiment was conducted for 3 years.The'Jinlinghuanglu'peach trees with vase shape were used.The experiment was arranged as a completely randomized design with 4 treatments:T1(150 fruits per tree),T2(250 fruits per tree),T3(300 fruits per tree)and T4(350 fruits per tree)with 6 replicates.It was found that the peach trees of T4 provided a relatively high yield but lowest fruit weight,while T1 gave the lowest yield but highest fruit weight.The peach trees of T2 had a relatively lower yield but relatively higher fruit weight,however,T3 provided a relatively higher yield but relatively lower fruit weight.The peach trees treated with T1 had high level of soluble solids content and sugar-acid ratio.In addition,inner fruit quality in both T2 and T3 was a little lower than T1.Moreover,the fruit coloring degree was not significantly affected by crop load.It was concluded that the yield was lower when the crop load was 150 fruits per tree(1 300 kg per 667 m2)of'Jinlinghuanglu'peach trees during full bearing period,however,it could produce larger fruit and better quality.In addition,the crop load between 250 and 300 fruits per tree(2 000～2 400 kg per 667 m2)could assure higher yield and larger fruit size.
发展果品区域公用品牌是促进果业高质量发展的内在动力、提升水果产业竞争力的战略引擎以及发挥果业优势的核心支撑.从果品地区分布、品牌价值和发展潜力方面深入分析了我国果品区域公用品牌的建设情况,发现我国果品区域公用品牌赋能果业高质量发展面临诸多挑战,即果品品质不稳定、果业生产成本较高、品牌影响力不足以及存在假冒伪劣等侵权行为.从企业、政府和行业协会层面提出果品区域公用品牌赋能果业高质量发展的优化路径,为我国果业高质量发展提供参考.
近年来,我国农业企业呈现出飞速发展的态势,越来越多的农业龙头企业逐渐壮大,同时中小型农业企业也在蓬勃发展,为我国农业发展注入了新的动力.然而,随着农业企业经营规模的不断扩大,对其经营水平的要求也随之增加.加之自然因素、人员素质、发展规模等问题,导致大多数农业企业在管理上难以尽善尽美,尤其是在财务风险管理方面仍存在诸多问题,这为农业企业的发展壮大埋下了隐患.为保障企业发展资金的健康运作,农业企业需要特别关注其财务风险管理.农业企业通过加强财务风险管理,能避免不必要的资金损失,提高资金利用效率,从而为企业可持续发展奠定基础.
计算机技术向农业领域的延伸和拓展,推动了智慧农业由初期的落地萌芽,逐步过渡到快速发展阶段,并进一步迈入规模应用期.计算机技术为农业装上了"智慧大脑"和"智慧四肢",赋予了农业生产管理全新的思维方式和实践工具,为传统农业注入了高科技的"智慧血液",使传统农业焕发出前所未有的生机与活力.
