陇南碧玉茶

陇南碧玉茶产自甘肃南部甘、陕、川交界的陇南茶区。产地气候温润，晴时早晚遍地雾，阴雨成天满山云，具有独特的高纬度、高海拔茶树生长条件。     

核桃生长结果习性及整形修剪技术探析

核桃是重要的木本油料树种之一。从介绍核桃的生长结果习性出发,对核桃生产上常用的整形修剪技术措施进行了详细阐述,为核桃生产提供了技术参考。     

天水市马铃薯生产潜力的开发途径

<正> 1 自然条件我市位于甘肃省东南部,北纬34°04′至35°11′,东经106°42′。地处陇中黄土高原与陇南山地的交接地带。北部属陇中黄土高原,南部属北秦岭山地,东北部属陇南山地。地跨长江、黄河两大水系。海     

保护地草莓生产的不利因素及无公害栽培关键技术

为适应无公害农业的要求,发展保护地无公害草莓产业,必须从现代无公害农业的基本理念出发。针对保护地无公害草莓生产实际和无公害生产技术标准,从草莓育苗、栽培管理等方面,重点研究制定保护地草莓无公害高产栽培关键技术,为提高保护地无公害草莓产业综合经济效益提供有力的技术支撑。     

陇南山区马铃薯病虫害无公害综合防治技术

马铃薯是陇南武都、礼县、西和、宕昌四县主栽作物之一。主栽区年降水低于 5 5 0mm ,属旱作农业 ,绝大部分为春季一季作。全区现马铃薯种植面积 4 7万hm2 ,年产鲜薯 5 0万t。据不完全调查 ,马铃薯病虫害近 70种 ,因病虫害而减产在12 %～ 30 %,严重年份减产在 5 0 %以上 ,是造成生产中产量不稳定、产品商品率低的重要因素。常见病虫害有 14种 ,与发达地区相比我区防治水平低 ,存在较大差距 ,在多年的田间管理实践中 ,以预防为主 ,综合防治为出发点 ,总结了一套生产无公害绿色产品的病虫害综合防治技术。1　种子防治1 1　选种选种包括两层…     

无公害茶叶栽培技术的应用

随着经济的发展,人民生活水平的提高,人们对日常生活中食品安全的问题逐渐重视起来。大多数人们还是趋向于接受安全无公害的食品。所以,人们对于无公害的茶叶栽培技术也就更加看重。对于应用无公害茶叶的栽培技术,不仅能够对茶叶中的有害农药杂质进行控制,还能够保障无公害茶叶的绿色生态性质。只有在茶叶栽培中使用无公害的茶叶栽培技术,才能保证培养出的茶叶能够满足现在人们的生活水平,无公害的茶叶栽培维护了广大人民的基本利益。因此,本文将主要从选择无公害茶叶基地的选择、无公害茶树树种的选择、无公害茶树施肥技术的选择、茶树剪裁的手段、无公害茶叶病虫害防治技术的应用以及无公害茶园土壤的管理等六个方面,来对无公害茶叶栽培技术进行应用介绍,以期为人们提供更好的无公害茶叶。     

四川丘陵地区核桃“三圃一园”建园技术研究

核桃是四川具有地域优势的重要特色经济林树种,为了提升四川省核桃林木良种的繁育能力,以四川省乐至县川中丘陵区现代林业科技示范园建设为载体,特在丘陵地区开展核桃"三圃一园"建园技术研究。提出了核桃良种基地品种资源收集圃、采穗圃、繁育圃和示范园的建园技术方法,为核桃新品种选育、繁育材料供应、优质纯正种苗培育、品种园建设提供科学依据和技术支撑。     

无公害农产品生产技术基本特征探讨

简要回顾无公害农产品的起源、概念和福建省无公害农产品发展的现状,重点总结无公害农产品6条关健性生产技术,归纳出无公害农产品的基本特征,即无公害农产品生产技术的系统性、生态性、重点性和可追溯性基本特征.     

浙江省无公害稻米标准及生产技术要点

为满足广大人民群众日益增长的对安全稻米产品的需求,提升稻米品质和市场竞争力,提高水稻种植的效益,规范无公害稻米生产,加强无公害稻米的产品质量管理,促进水稻生产的可持续发展,浙江省于２０００年１１月发布了《无公害稻米系列标准》,并于２０００年１２月３０日实施。 无公害稻米是指按照无公害稻米生产技术准则要求生产,其农药残留、重金属、硝酸盐、有害病原微生物等各项指标均符合无公害稻米质量标准的稻米。浙江省公布的无公害稻米对产地、生产技术、卫生质量上有以下一些要求。 一、产地环境选取和要求 无公害稻米生产地…     

浅谈无公害茶园的施肥技术

介绍了无公害茶园的施肥技术。主要包括无公害茶园的施肥原则、无公害茶园常用的肥料及其选择以及无公害茶园施肥的相关技术措施。     

加快陇南油橄榄产业发展的思考

LIANG Fang(Olive Research Institute,Longnan Academy of Economic Forestry,Longnan,Gansu 746000)     

甘肃陇南地区小麦条锈菌群体遗传多样性分析

为了解甘肃陇南地区小麦条锈菌群体的遗传多样性,采用TP-M13-SSR荧光标记技术,对该地区8个种群202个小麦条锈菌分离株基因组DNA进行SSR标记分析。结果表明,甘肃陇南地区小麦条锈菌群体遗传多样性比较丰富。在物种水平上,观察等位基因数(Na)为1.88,有效等位基因数(Ne)为1.50,Nei’s基因多样性指数(H)为0.30,Shannon信息指数(I)为0.46,多态位点百分率(P)为87.5%;种群之间遗传多样性有显著差异。中梁种群、秦安种群的遗传多样性相对较高,武都种群、文县种群、齐寿种群和平南种群次之,礼县种群、西和种群遗传多样性相对较低。AMOVA分析结果表明,小麦条锈菌群体间和群体内都存在着一定的遗传分化,群体间的遗传变异占总变异的4.05%,群体内遗传变异占95.05%。     

Effects of Walnuts (<Emphasis Type="Italic">Juglans regia</Emphasis>) on Learning and Memory Functions

Walnut has been regarded as a health food that is delicious and nutritious. Both preventive and therapeutic effects of walnut are well documented. Walnuts are rich in omega-3 fatty acids that are reported to have beneficial effects on brain function. The present work was designed to evaluate the effects of walnuts on learning and memory in male rats. The effect of oral intake of walnut was also monitored on food intake. Walnut was given orally to rats for a period of 28 days. Memory function in rats was assessed by elevated plus maze (EPM) and radial arm maze (RAM). A significant improvement in learning and memory of walnut treated rats compared to controls was observed. Walnut treated rats also exhibited a significant decrease in food intake while the change in growth rate (in terms of percentage) remained comparable between the two groups. Analysis of brain monoamines exhibited enhanced serotonergic levels in rat brain following oral intake of walnuts. The findings suggest that walnut may exert its hypophagic and nootropic actions via an enhancement of brain 5-HT metabolism.     

茶树-核桃树间作模式对茶园土壤养分的影响

本研究选取云南省保山市昌宁县境内的核桃树间作年限为6、10、15、30a的茶树-核桃间作茶园土壤为研究对象,取距核桃树主干1、2、3 m处的0～20 cm表土层和20～40 cm土层深度的土壤和相对应的单作茶园土壤为供试样,测定了土壤的pH、有机质、碱解氮、速效磷、速效钾、交换性钙和交换性镁的含量。结果表明:随着核桃树种植年限的延长,间作茶园土壤pH呈增加的趋势,核桃树种植年限为30 a的土壤pH接近或大于7.0;核桃树间作年限为30 a的间作茶园土壤有机质、碱解氮和速效磷均显著小于单作茶园中的含量;随着核桃树间作年限的延长,间作茶园土壤中的速效钾、交换性钙、交换性镁的含量都显著高于单作茶园。上述研究结果表明,核桃树对茶树有明显的化感抑制作用,会导致茶树不能较好生长和茶叶品质下降。因此,不宜将二者相间种植或将核桃树作为茶树的遮荫树利用。     

龙南遗址红烧土植物蛋白石分析

龙南遗址红烧土植物蛋白石分析郑云飞，游修龄，徐建民，边其均（浙江农业大学，杭州３１００２９）ＰｌａｎｔＯｐａｌＡｎａｌｙｓｉｓｏｆＬｏｎｇｎａｎＮｅｏｌｉｔｈｉｃＳｉｔｅ￥ＺＨＡＮＧＹｕｎｆｅｉ；ＹｏｕＹｉｕｌｉｎｇ；ＸｕＪｉａｎｍｉｎ；ＢＩＡＮＱｉ...     

Compatibility of Natural Dyes on Aluminum Pre-Mordanted Woolen Yarns by Determination of Diffusion Coefficient

In the present research, a method of assessing relative compatibility rating of single and binary mixtures of walnut green shell, cochineal, and weld natural dyes on aluminum pre-mordanted woolen yarns was proposed, where a proportion of the calculated diffusion coefficients of dyes was postulated. To calculate the diffusion coefficient values, the uptake behavior of dyes was derived as the K/S and the exhaustion curves by dyeing the woolen yarn samples with the individual dye as well as with the mixtures of dyes obtained from practical conditions of dyeing. A typical method was employed to dye the samples at two temperatures of 80 and 95 oC. The method proposed for determination of the compatibility of dyes was more verified at higher temperature, that is, 95 oC, against a conventional method of solution analysis. The results of compatibility showed that the selected binary mixtures of cochineal-weld have an excellent compatibility. The other mixtures, that is, walnut green shell-cochineal and walnut green shell-weld showed weak-moderate and very weak compatibility, respectively.     

小麦品种绵麦37对条锈病和白粉病的抗性

为了解小麦品种绵麦37在当前生产和抗病育种上的利用价值,通过室内和田间试验,对该品种进行了苗期和成株期的条锈病和白粉病抗性鉴定和评价。结果表明,在苗期接种的846份采自甘肃省不同地区及邻近周边麦区的条锈菌样中,51份菌株对绵麦37具有致病性,占总菌样数的6.03%;所用的条锈菌样中,生理小种及致病类型包括CYR33、CYR32、Su11-2、Su11-3、Su11-4、HY8、HY9、HY4、G22-9和G22-14,这些小种及致病类型主要分布在甘肃、四川及陕西等地,尤以四川、甘肃陇南等地出现频率较高。在成株期随着以G22-9和G22-14为代表的贵农类群出现频率的进一步升高,绵麦37已逐步在甘肃陇南田间丧失抗条锈性,但对白粉病抗性表现较好,尚可作为抗源材料进一步利用。     

The Nutritional and Phytochemical Composition of the Indigenous Australian Pindan Walnut (<Emphasis Type="Italic">Terminalia cunninghamii</Emphasis>) Kernels

Nutritional composition of the kernels of two types of Pindan walnut (Terminalia cunninghamii), a native nut consumed traditionally by Australian Indigenous peoples, is reported for the first time. Results showed that Pindan walnut kernels contained high levels of fat, protein and ash, approximately 50, 30 and 5% fresh basis, respectively. The levels of minerals in the kernels were much higher than common walnuts and macadamia nuts, especially those of phosphorus, magnesium and zinc. The high amounts of polyphenols in the kernels provided strong hydrophilic antioxidant capacities, of up to 2004 mg Trolox equivalents/100 g fresh basis using the hydrophilic oxygen radical absorbance capacity assay. Both free polyphenol content and hydrophilic antioxidant capacities of the kernels were higher than those of macadamia nuts, although the lipophilic oxygen radical absorbance capacity was lower. These preliminary studies indicate high potential for wider use of the Pindan walnut as a novel, nutritious and health-promoting food.     

Cereal and nut bars,nutritional quality and storage stability

Six snack-type bars were manufactured, to contain oat and wheat germ and two different walnut levels, agglutinated with natural sweeteners and fats. Two bars also contained toasted amaranth with brown sugar cover and wheat extrudate, while two others, contained puffed instead of toasted amaranth. Water activity (Aw) and moisture were determined in the manufactured products. Quality and sensory evaluation and proximate analysis were carried out on the bars containing highest levels of walnuts (18%). The caloric contribution of the bars was computed by Atwater methods. The nutritional quality of the bars was determined by means of the Protein Efficiency Ratio (PER) and Net Protein Ratio (NPR), and the results were used to obtain relative PER and relative NPR. Samples of the latter bars were kept under accelerated storage for 15 days at 37 °C and analyzed every 5 days to determine their Aw, moisture, peroxide and sensory acceptability. The drying time for the cereal — and walnut — based bars was 45 min at 120 °C. All bars presented a good fiber supply and the CN₁ bar, containing only oat, wheat germ and walnut, had the greatest protein content. In the sensory evaluation, the walnut level with the greatest preference was 18%. PER and NPR values of the bars did not differ significantly showing values approximately 86% that of the casein value. During storage, the moisture and Aw decreased in all the bars. Peroxides remained within the acceptable ranges; acceptability based on sensory evaluation remained best in the bar with toasted amaranth. Walnuts can successfully be used in the manufacture of snack bars as these offer good nutritional and sensory quality and remain stable in storage.     

江西省油菜根肿菌小种鉴定与油菜品种抗性分析

明确江西省油菜根肿病病菌类型及油菜品种对病害的抗性,对指导油菜生产及景区观光业的发展具有重要意义。为了探明油菜根肿病的分布及其病菌的致病性分化,于2011年至2016年持续对江西省油菜根肿病的地理分布进行调查,并对病区油菜根肿病株进行生理小种鉴定。结果表明,江西油菜根肿病主要分布在赣东北局部区域,致病菌为4号和9号生理小种,其中4号小种仅发现在赣东北区域分布。在4号和9号小种的病区分别设置田间病圃进行200余个油菜品种的抗性鉴定,结果表明,测试的全部油菜品种对9号小种表现抗病,而94.74%油菜品种对4号小种表现感病;萝卜籽花和59-013等12个品种对4号小种具中抗以上水平。本研究筛选到生理小种特异性的抗病资源或品种,可为油菜抗根肿病育种提供抗源。