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Effect of Combined Application of Organic Farming Aid (OFA) and Inorganic Fertilizers on the Growth and yield of Maize and Soil Microbial Properties in the Guinea Savannah Agro-Ecological Zone of Ghana

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American Journal of Plant Sciences 2023年第10期14卷 1180-1206页

作者： O. A. Amoako J. Adjebeng-Danquah R. y. Agyare E. k. Akley H. Abeka Julius yirzagla T. k. Tengey P. Teinor R. Alhassan A. A. Ibrahim C. Naapoal CSIR-Savanna Agricultural Research Institute Tamale Ghana HJA Africa Company Limited Accra Ghana

The aim of the study was to evaluate the effect of different rates of organic farming aid (OFA) and inorganic fertilizer on the productivity of maize, chemical and microbial properties of soil for higher economic value. Field experiments were conducted during the 2020 and 2021 cropping seasons at the research fields of CSIR-Savanna Agricultural Research Institute located at Nyankpala in the Guinea savannah agroecology of Ghana. The study consisted of five treatment combinations: full rate of OFA, full rate of NPk, 1/2 OFA + 1/2 NPk, full OFA + 1/2 NPk and a control (no OFA and no NPk) which were arranged in a randomized complete block design with four replications. Analysis of variance indicated significant (P 0.05) treatment and year interaction effect for all the growth parameters except for plant height, leaf area and leaf area index. Apart from hundred seed weight, treatment and year interaction effect for all the yield and yield components was significant (P 0.05). Application of full rate of NPk (90:60:60) resulted in the highest grain yield of 4960 kg·ha-1, however it was statistically similar to those obtained by the combined application of full rate of OFA (250 ml·ha-1) + 1/2 NPk and 1/2 OFA + 1/2 NPk with grain yield of 4856 kg·ha-1 and 4639 kg·ha-1 respectively. There was also a yield advantage of 197. 5%, 191.3%, 178.3 and 79.1% over the control for full NPk rate, full OFA rate + 1/2 NPk rate, 1/2 OFA rate + 1/2 NPk and full OFA rate respectively. Application of full OFA rate + 1/2 NPk enhanced soil basal respiration (evolved CO2) and mineralizable C, implying that, combination of full OFA rate and NPk fertilizer would be necessary to boost soil microbial activity and soil labile nutrient pool (labile C pool). This suggests that combined use of full OFA rate + 1/2 NPk fertilizer can be a better strategic tool for improving soil quality. The highest benefit cost ratios (BCR) of 2.58 and 3.77 were obta

关键词： Organic Farming Aid Labile C Pool Wood Vinegar Combined Application

THE EFFECT OF BORON TREATMENT ON THE HyDROGEN ATTACk BEhaVIOR 0F 1.25Cr-0.5Mo STEELS

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Acta Metallurgica Sinica(English Letters) 1997年第3期10卷 233-238页

作者： X.H Luo T.J. Su C.G Fan y y Liand CX Shi(Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, China)X Chen and A.M Guo (Iron & Steel Research Institute, Wuhan Iron & Steel (Group) Company, Wuhan 430083, China) Inst of Metal Research Chinese Acad of Sciences Shenyang China

1.25Cr-0.5Mo steels with different Ti-B or Al-B treatment were exposed in 18 MPa hydrogen atmosphere at 480℃ fo f 100, 500 and 1000 h respectively. Tensile and bend properties of steels before and after hydrogen changing were tested. The results show that the different mechanical properties of the steels with different B content have different responses to high temperature high pressure hydrogen charging *** hydrogen changing, more loss of ductility can be found in the steel not treated with B than those in the steels treated with B. Metallographic analyses indicated that decarburization occurred in all the steels. Furthermore, many methane bubbles were found by SEM analysis in the surface decarburization layer in the steel without B,while only a few bubbles, the number and size of which decreased with increasing B content, were found in steels with B treatment. In addition, hydrogen determination results manifested that after being exposed in hydrogen atmosphere the steel containing no B had higher hydrogen content than that of steels containing B. All this suggests that B treatment improved the ha resistance of 1.25Cgr-0.5Mo steel, and the more B the steel contained the more perceptible the effect.

关键词： boron hydrogen attack Cr-Mo steel low alloy steel

Tree species diversity, richness, and similarity between exotic and indigenous forests in the cloud forests of Eastern Arc Mountains, Taita Hills, kenya

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Journal of Forestry Research 2010年第3期21卷 255-264,395页

作者： Loice M.A.Omoro Petri k.E.Pellikka Paul C.Rogers Viikki Tropical Resources Institute Department of Forest SciencesUniversity of Helsinki University of Helsinki Department of Geosciences and Geography Department of Wildland Resources and Ecology Center Utah State University

Biodiversity assessment for tree species was conducted in three forest fragments ofthe Taita Hills, southeastern kenya to compare species diversity between and within three exotic forest plantations of pine, eucalyptus, cypress and the indigenous forests. The study sites were： Ngangao （120 ha）, Chawia （86 ha）, and Mbololo （185 ha）. A y-plot design was used to sample 32 plots comprising of 65 subplots. At each subplot, all juvenile trees of 5 cm and above in diameter at breast height （DBH） were enumerated and recorded by species. Tree regeneration （seedlings and saplings） was tallied by species. The Shannon-Weiner Index was used to calculate species diversity and evenness. The derived Shannon’s indices were further converted into effective numbers to show the magnitude of differences in species biodiversities. To evaluate dif-ferences in species diversities, a one way ANOVA was conducted and to separate the means, Tukey＇s HSD and Duncan’s tests were used for even and uneven number of samples respectively. Jaccard’s similarity index was used to assess species similarities. There were more than 58 species whose stem densities varied between 10 and 2 000 trees per *** were significant differences in species diversities between forest types and sites; the indigenous forests showed higher diversities than the exotic forests. Similarly, Chawia sites had higher species diversity than both Ngangao and Mbololo. Chawia also had a higher number of regen-erated species than the two other sites, including species such as Xymalos monospora, Rapanea melanophloeos, and Syzygium guineense, which are associated with low levels of disturbance. These findings indicate that the indigenous forest is more diverse in species as would be expected in the tropics. The high species diversity in Chawia could be accounted for by the higher levels of disturbance it underwent, unlike the two other sites. The regeneration of species associated with low levels of disturbance found in the ex

关键词： biodiversity forest fragments Eastern Arc Mountains disturbance exotics indigenous species

板栗壳生药研究及有效成分没食子酸、绿原酸、芦丁含量测定

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食品工业科技 2016年第21期37卷 323-328页

作者：苏丽娜王小庆曲靖医学高等专科学校药学系云南曲靖655000

摘要：采用性状鉴别、组织切片鉴别、粉末鉴别对板栗壳进行生药研究。建立HPLC法同时测定板栗壳中没食子酸、绿原酸和芦丁含量，色谱条件为C18柱，甲醇-0．4％磷酸为流动相梯度洗脱，检测波长275nm，流速1mL／min，柱温30℃。结果表明... 详细信息

摘要：采用性状鉴别、组织切片鉴别、粉末鉴别对板栗壳进行生药研究。建立HPLC法同时测定板栗壳中没食子酸、绿原酸和芦丁含量，色谱条件为C18柱，甲醇-0．4％磷酸为流动相梯度洗脱，检测波长275nm，流速1mL／min，柱温30℃。结果表明，板栗壳横切面、纵切面果皮细胞特点、中果皮的石细胞群和石细胞环带、内果皮较多的非腺毛、种脊部位的三角形维管柬及粉末中果皮细胞、石细胞、非腺毛特征均可作为板栗壳的生药鉴别特征，为板栗壳生药学质量标准研究奠定基础。测定11批云南不同产地板栗壳样品中没食子酸含量为0．328-0．362mg／g，绿原酸含量为0．129~0．141mg／g，芦丁含量为0．180—0．230mg／g。该含量测定方法操作简单，结果准确，专属性强，为板栗壳质量标准的建立提供依据。

关键词：板栗壳没食子酸绿原酸芦丁高效液相色谱生药研究

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文化认同——大理古城和西方文化的对话

廊坊师范学院学报（自然科学版） 2008年第Z1期8卷 125-126,129页

作者：杜海莉大理学院外国语学院云南大理671003

大理是全国著名的旅游城市.大理山川奇秀,历史悠久,是全国历史文化名城,国家级自然保护区,国家级风景名胜区.大理古城内中外游客云集,是大理向世界展示民族风采,弘扬民族文化的重要窗口.这样一个荟萃中西文化的旅游城市,居民与西方游客... 详细信息

大理是全国著名的旅游城市.大理山川奇秀,历史悠久,是全国历史文化名城,国家级自然保护区,国家级风景名胜区.大理古城内中外游客云集,是大理向世界展示民族风采,弘扬民族文化的重要窗口.这样一个荟萃中西文化的旅游城市,居民与西方游客之间片文化交流的状况如何呢?本文就2006年对古城居民认同西方文化的状况进行分析,探讨文化交流的现状并提出改进文化交流的方法和建议.

关键词：大理古城西方人文化认同

携带角质细胞生长因子和低氧诱导因子-1α双基因减毒沙门菌的遗传稳定性

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中国生物制品学杂志 2021年第8期34卷 936-940页

作者：李欣魏静蒋如如哈小琴甘肃中医药大学临床医学院临床检验诊断学甘肃兰州730030 中国人民解放军联勤保障部队第九四○医院检验科甘肃兰州730050

目的探讨携带角质细胞生长因子(keratinocyte growth factor,kGF)和低氧诱导因子-1α(hypoxia inducible factor-1α,HIF-1α)双基因减毒沙门菌(Ty21a-pIRES-HIF-kGF,TPkH)的遗传稳定性。方法将TPkH连续传代40代,每隔10代检测菌落和菌体的形态、质粒纯度及浓度;每隔5代进行菌落PCR鉴定。取初始代TPkH,接种至大鼠小肠上皮细胞(rat intestinal epithelial cells,IEC-6),于培养12、24、48、72 h时,检测kGF和HIF-1α蛋白的表达水平;取初始代、10、20、30、40代TPkH菌落,接种至IEC-6,培养48 h,检测kGF和HIF-1α蛋白的表达水平。结果 TPkH连续传代40代,菌落和菌体形态基本一致,所含质粒纯度和浓度变化较小,且均可扩增出目的基因条带。初始代TPkH转染IEC-6 12 h,kGF和HIF-1α蛋白水平显著上升(P kH转染IEC-6后,kGF和HIF-1α蛋白水平差异无统计学意义(P> 0.05)。结论 TPkH具有良好的遗传稳定性,本实验为TPkH制剂的大规模生产奠定了基础。

关键词：角质细胞生长因子低氧诱导因子-1α 减毒沙门菌遗传稳定性

Comparison of Organ Morphology and yield Composition in Different Rice Cultivars

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Agricultural Science & Technology 2012年第10期13卷 2088-2092,2151页

作者：严定春王勋 L.T.Wilson y. yang 中国农业科学院农业信息研究所农业部农业信息服务技术重点开放实验室北京100081 苏州农业职业技术学院苏州215008 Texas A&M University System AgriLife Research & Extension Center 1509 Aggie Drive Beaumont TX 77713 USA

[Objective] The study aimed to compare the difference of organ morphology and yield composition in 10 rice cultivars with 3 sowing date,and to correlate leaf length and plant height with exogenous variables like temperature accumulation and sunshine duration.[Method] Detailed data of organ morphology and yield component were obtained and analyzed through repeated field observations and destructive samplings over the growing season,including leaf length,node number,tiller number,plant height and grain yield of 10 rice cultivars（Takanari,IR72,Sankeiso,CH86,IR65564-44-2-2,Nipponbare,Takenari,Banten,WAB450-1-B-P-38-HB,Wuxiangjing 9） with 3 sowing dates（May 11,May 22,and June 19,2002）.[Result] Max leaf length for each node increased at the early growth stage and decreased at the later growth *** leaf length of CH86 and Banten was the maximum in 4 Indica cultivars and 6 Japonica cultivars,*** number and plant height decreased with the later sowing date,and that of CH86 was the *** maximum grain yield was found in Wuxiangjing 9,and the greatest genotypic variation existed in rice yield,panicle number,spikelet per panicle,and grain weight;the grain yield ranged from 4 358 to 7 443 kg ha-1;the panicle number ranged from 158×104 to 330×104 ha-1;no direct correlation between yield,tiller number and plant height was observed in this experiment.[Conclusion] Empirical regression fitting of the resulting data was developed for leaf length and plant height prediction and yield component comparison,which could be used to construct deeper and more mechanistic models or to optimize rice growing conditions.

关键词： Leaf Plant height yield GDD Sunshine duration

First report of nigrospora sphaerica causing leaf blight disease on camellia sinensis in Anhui,China

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First report of nigrospora sphaerica causing leaf blight dis...

基于直觉模糊集和有效测度的Choquet积分

中国植物病理学会2015年学术年会

作者： LIU y.-J. TANG Q. Anhui Academy of Science and Technology School of Life Sciences Wuhu Institute of Technology

Jiuhua Mountain fuzz tip,a cultivar of Camellia sinensis,is widely cultivated for leaves in the Jiuhua Mountain region in Anhui Province of *** a survey conducted from 2013 to 2014,a leaf blight disease of unknown etiology has been observed on young leaves of Jiuhua Mountain fuzz ***2014,nearly 25% of the orchards visited and covering more than 200 ha were affected in this *** initial symptoms of this disease appear as dark spots surrounded by a yellow to rust-brown zone that gradually increases from 5 to 10 mm in diameter,changing from circular to elliptical lesions on the *** enlarge and coalesce,causing diseased leaves to become *** September 2014,leaves of typical symptoms were collected from Zhubei,Lingyang and Miaoqian *** leaf tissues（4 mm2 sections） from healthy and margin of disease tissues were surface-sterilized with 1.5% sodium hypochlorite for 2 *** rinsing in sterile distilled water three times,segments were plated on potato dextrose agar（PDA） and incubated at 25℃ for 1 week.15 fungal isolates were recovered from symptomatic infected *** fungal colonies were initially white,becoming light to dark gray and produced black,spherical to subspherical,single-celled conidia（12.3 to 14.6 × 15.2 to 16.8 μm）,which were borne on a hyaline vesicle at the tip of the *** the basis of these morphological features,the isolates appeared to be similar to Nigrospora *** universal rDNA-ITS primer pair ITS4/ITS5 was used to amplify a DNA fragment of approximately 583 *** amplified PCR products was sequenced and compared through BLASTn *** of the isolate was 99%similar to（GenBank Accession ***478134.1 and HQ608030.1）.The sequence of isolate Qy-6 was deposited in GenBank（kP731976）.Morphological features best match *** and with the supporting molecular data,the pathogen was identified as *** confirm pathogenicity,the surface of ten healthy tea leaves was d

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河北大学学报（自然科学版） 2014年第3期34卷 230-233,243页

作者：杨兰珍哈明虎张自儒河北大学数学与计算机学院河北保定071002 河北软件职业技术学院学生处河北保定071000

给出了一种基于直觉模糊集的实值有效测度,讨论了其相关性质;结合有效测度,讨论了直觉模糊集合上的Choquet积分及其性质,从而拓广了非可加测度和积分理论.

关键词：直觉模糊集有效测度 Choquet积分