Owing to the complexity of the electroforming mechanism, the structure of electroformed deposits is affected by many process parameters, and defects such as pinholes and nodules in electroformed deposits must be solved. In this study, the mechanism by which hard particles inhibit the formation of the above defects in the electroforming process of Ni-Co alloys was analyzed. Through the friction-assisted electroforming Ni-Co alloy tests, the effects of friction and current density on the hardness, texture and microstructure of the Ni-Co electroformed deposits were studied. The results show that the microhardness of the Ni-Co coatings obtained is between 651 HV and 669 HV with the increase of the cathode speed from 8 rpm to 512 rpm. When the cathode speed is 16rpm, the grain sizes of Ni-Co coatings increase with the increase of cathode current density from 2 A dm −2 to 8 A dm −2 , and the microhardness of the coatings is between 672 HV and 590 HV.

High temperature in summer is an unfavorable factor for passion fruit (Passiflora edulis), which can lead to restricted growth, short flowering period, few flower buds, low fruit setting rate, severe fruit drop, and more deformed fruit. To explore the molecular physiology mechanism of passion fruit responding to high-temperature stress, we use 'Zhuangxiang Mibao', a hybrid passion fruit cultivar, as the test material. Several physiological indicators were measured and compared between high-temperature (average temperature 38 °C) and normal temperature (average temperature 25 °C) conditions, including photosynthesis, chlorophyll fluorescence parameters, peroxidase activity (POD), superoxide dismutase activity (SOD) and malondialdehyde content. We performed RNA-seq analysis combined with biochemistry experiment to investigate the gene and molecular pathways that respond to high-temperature stress. The results showed that some physiological indicators in the high-temperature group, including the net photosynthetic rate, stomatal conductance, intercellular CO2 concentration, transpiration rate, and the maximum chemical quantum yield of photosystemII (PSII), were significantly lower than those of the control group. Malondialdehyde content was substantially higher than the control group, while superoxide dismutase and superoxide dismutase activities decreased to different degrees. Transcriptome sequencing analysis showed that 140 genes were up-regulated and 75 genes were down-regulated under high-temperature stress. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) annotation analysis of differentially expressed genes revealed many metabolic pathways related to high-temperature stress. Further investigation revealed that 30 genes might be related to high-temperature stress, such as chlorophyllide a oxygenase (CAO), glutathione (GSH), WRKY transcription factors (WRKY), and heat shock protein (HSP), which have also been reported in other species. The results of real-time fluorescence quantitative PCR and RNA-seq of randomly selected ten genes are consistent, which suggests that the transcriptome sequencing results were reliable. Our study provides a theoretical basis for the mechanism of passion fruit response to high-temperature stress. Also, it gives a theoretical basis for the subsequent breeding of new heat-resistant passion fruit varieties.

采用摩擦辅助电铸技术,研究当阴极电流密度为4.0 A/dm2时,钴-镍阳极面积比的变化对镍钴合金电铸层显微硬度、组成和结构的影响.结果表明:当钴-镍阳极面积比由15%增大到25%时,镍钴合金中钴含量显著增加,从43.5%增加到63.5%,镍钴合金铸层显微硬度从603 HV提高到635 HV;当钴-镍阳极面积比继续增大到55%时,钴含量几乎不变,但显微硬度仍从635 HV提高到671 HV,电铸层晶粒呈逐渐细化的趋势.各镍钴合金电铸层均具有面心立方结构和密排六方结构.

Ni-Co alloy is widely used in industry due to its excellent properties. In this paper, based on the sulfamate system, dual anodes are used to get Ni-Co alloy by electroforming. The effects of current density and pulse parameters on the microhardness, composition and surface microstructure of electroformed Ni-Co alloy are investigated and analysed by hardness tester, energy spectrometer (EDS) and scanning electron microscopy (SEM). The experimental results show that the current density and pulse parameters have significant impact on the performance of the electroformed layer, and it is determined that the current density of 2A/dm2, the frequency of 5kHz, and the duty cycle of 30% are the best parameters electroforming Ni-Co alloy with dual anodes.

在游离微珠摩擦辅助下,采用镍、钴双阳极电铸Ni–Co合金.研究了镍阳极电流密度为4.0 A/dm2时,钴阳极电流密度的变化对Ni–Co合金电铸层性能的影响.结果表明,Ni–Co合金电铸层表面平整、致密,在扫描电镜下可以看到明显的摩擦痕迹.随着钴阳极电流密度增大,Ni–Co合金电铸层的Co质量分数略增,显微硬度降低,晶相结构变化不大.钴阳极电流密度为1.0 A/dm2时所得的Ni–Co合金电铸层表面晶粒最细致,Co质量分数为59.09％,显微硬度达到623 HV.

广西钦州市从2015年开始发展百香果育苗产业,经过多年积累,现已发展成为华南地区规模最大、全国著名的百香果育苗产区.从发展规模、技术水平、效益及销售市场等方面对钦州市百香果育苗产业发展现状进行总结分析,针对其存在的优良品种匮乏、生产设施和技术水平落后、生产及管理不规范等方面问题,结合该产业发展方向和重点,提出了组建百香果良种资源圃、加强百香果病毒生理生化研究、提升产业科技水平和标准化程度、注重人才培养、创新销售模式及培育企业品牌的建议,以期加快补足其发展短板,助力钦州市百香果育苗产业高质量发展.

火龙果(Hylocereus undatus),属于热带植物,因富含大量葡萄糖,维生素等营养物质,味道清甜,备受消费者喜爱.现市场上火龙果多为杂交品种,为保持火龙果的优良特性,前人研究出组织培养方式来保证火龙果的稳定遗传.现对火龙果的组织培养方面的研究进行了总结和展望.

钦州地区以种植加工型黄瓜为主, 品种极具地方特色,加工产品钦州瓜脆享誉国内外,十分畅销.近年来,钦州加工型黄瓜种植面积减少,原材料供应不足, 市场扩展趋缓,其原因之一是落后的育苗技术不能适应现代化、规模化的种植方式.本团队通过大量试验得出,采用穴盘基质育苗可以增加土地利用率,提高育苗效率、节省种子、便于管理,可进行大规模工厂化生产,是一项值得推广的快速培育优质壮苗的新型育苗技术.

茭白是北部湾地区新发展的特色水生蔬菜,本文作者主要从种苗选择、整地、肥水管理、病虫害防治等方面介绍双季茭白高产栽培技术.

Spiral girdling is an important technical measure of controlling shoots to promote flowers for litchi,the application of measures is closely related to the origin,variety,tree potential,climate and management level.The survey summarized the successful experience and failure lessons for production management.

在土壤有效Ca、Mg、B含量缺乏的酸性田上种植甘蔗,以常规施肥(A)为基础,配施4个处理有机钙镁硼肥:750(B)、1125(C)、1500(D)和1875 kg/hm2(E),研究其对甘蔗产量、糖分及效益的影响.试验结果.在有机钙镁硼肥4种施用水平中D处理效果最好,比E、C、B、A处理产量分别增加1.5％、10.6％、22.0％、46.8％,糖分分别提高0.0、0.3、0.4、0.7个百分点,产糖量分别增长1.5％、12.6％、24.9％、53.1％,经济效益分别提高2.8％、10.6％、21.7％、45.2％.因此,有机钙镁硼肥施用量以1500 kg/hm2为适宜.建议我国南方酸性土壤地区参考应用,以提高甘蔗生产效益.

介绍加工型黄瓜乐意一号的特征特性,总结了其高产栽培技术,包括选地整地、播种育苗、定植、田间管理、病虫害防治、采收等方面内容,以期为该品种的推广应用提供依据.

钦州瓜皮是钦州地区地方小吃,清香爽口享誉全国.目前仅本地黄瓜加工企业就达数十家之多,但由于本地黄瓜均是农民自留种,品种退化严重,节瓜节位高,抗病虫能力较差,气温高时雌花少,产量低,耐热性差等地方品种缺点,致使加工厂原材料缺乏,不能周年进行周年加工,大大制约我区黄瓜产业的发展.加工型雌性系新品种成为解决当前产业问题的突破口.通过对耐热性、抗病性、高产性好的加工型雌性系黄瓜材料自交纯化后用作新的育种材料,并将其应用于杂交育种,必将大大提高黄瓜雌节率,极大的提高产量.经过诱雄技术处理使部分雌花诱导形成雄花,雌雄花进行授粉杂交产生种子,解决F1代的制种问题成为克服雌性系黄瓜自身繁殖困难的关键技术.

介绍了钦州市咸酸地茭白高产栽培技术,包括土壤改良、茭白品种选择、合理密植、适时种植及田间管理等方面,为茭白生产提供了借鉴.

Objective] The aim was to investigate the tree-crown structure characteristic of Shixia longan airtight orchard.[Method] The in-vestigation of the tree-crown structure of Shixia longan airtight orchard was done, and the basic characteristics of canopy structure and related parameters was obtaind.[Result] The study showed that the plant and row space was 4.36 m ×5.62 m, tree height was 3.50-5.40 m and average was 4.76 m, tree-crown height was 3.14 m, vertical crown breadth was 6.82 m, lateral crown breadth was 6.03 m, the average of vertical cross length was 2.46 m, the average of lateral cross length was 0.41 m.The tree-crown of one single plant was round and the plants in the same line connecting into an integrative body which make the “hedgerow” structure.There was one main trunk and the average perime-ter of it above 10cm to the ground was 72.4 cm, it also had 2 to 4 main branch and its perimeter was 65.4 cm.The average of branching de-gree was 13.2, the volume of leaf layer was 15.77 m3 and the bare chamber was 7.84 m3 , the relative intensity in chamber was 12.7% and the relative intensity between plants was 18.6%.The canopy coverage rate was 73.96%, leaf horizontal density in the garden was 13.31, leaf area index was 11.60, the rate of tree-crown was 48.87% and the production volume coefficient was 66.79%.[ Conclusion] The research provide the reference for crown shaping and enclosed modification of of Shixia longan airtight orchard.

随着现代农业技术的迅速发展、科研领域的不断拓展,各学科间的相互交叉、融合日益明显,一些重大课题和重要成果不能依靠单个人的孤军奋战来完成,而需要引进农业科研领域不同专业、不同层次人才组成的科研团队相互协作、联合攻关才能完成.科研创新团队就是这样一个团体,是指在科研工作中,由带头人和一定数量的科技人员,为完成工作或目标,通过分工合作而组合在一起的群体.

番茄是广西“南菜北运”和“西菜东调”的主要蔬菜品种，2013年播种面积6.36万hm2（95.4万亩），重点销往全国各大批发市场，对稳定华北、西北、东北、珠江三角洲和香港、澳门地区冬春淡季市场蔬菜供应和物价平稳作用重大。番茄生产在广西蔬菜生产中占有重要地位，在吸纳农村劳动力就业、促进农民增收中担负重要角色。调查分析广西番茄产业基地现状及存在的问题，对广西番茄产业基地建设健康可持续发展具有重要意义。

In recent years, the development trend of passion fruit seedling industry in Qinzhou, Guangxi is good, but on the whole, it is still in its infancy and the development of the industry is fragile. This paper briefly described the development status and existing problems of the passion fruit seedling industry in Qinzhou, Guangxi, and put forward reasonable suggestions in order to promote the healthy development of the passion fruit seedling industry, increase farmers’ income and prosper rural economy.