灯光诱蛾

利用棉铃虫成虫 (蛾 )夜间交配、产卵 ,并对光有趋性的活动习性 ,在棉田挂灯诱杀棉蛾效果很好。据各地经验 ,棉田挂灯要因地制宜。百亩成片棉田宜用高压汞灯诱蛾　采用特制 4 5 0瓦自镇高压汞灯 ,电源电压为 380伏和 2 2 0伏两种 ,配用三通防水灯口 ,供电线采用 2 5平方毫米的铜或铝胶质线。灯头引线选用大于 2平方毫米的多股软线。单独设置开关或插座。灯要安装在棉田或其它目标田内 ,灯间距 2 5 0米左右。灯头固定在一稳定的三角架上 ,灯的高度以保证光线能够畅通向四周射出为宜。灯下设一捕虫水池 ,最好用特制玻璃钢水槽 ,也可能砖和水…     

中高山区优质玉米杂交种四号黄的选育与应用

玉米是中高山区农民赖以生存的主要粮食作物,因此解决好山区农民的粮食问题是改变山区面貌的基础.稳定粮食产量是促进畜牧业发展以及农业产业结构调整的根本保障.培育出高产、优质、适应性强的品种是山区实现粮食稳产和粮食基本自给的重要手段.四号黄是镇坪农科所利用当地农家品种资源选育组配的"改良单交型"杂交组合.全生育期130 d,株型半紧凑,高抗倒伏,高抗大小斑病.一般单产6 750 kg/hm2,适宜我国西南及西北春播玉米区种植.     

中高山区优质玉米杂交种四号黄的选育与应用

玉米是中高山区农民赖以生存的主要粮食作物,因此解决好山区农民的粮食问题是改变山区面貌的基础.稳定粮食产量是促进畜牧业发展以及农业产业结构调整的根本保障.培育出高产、优质、适应性强的品种是山区实现粮食稳产和粮食基本自给的重要手段.四号黄是镇坪农科所利用当地农家品种资源选育组配的"改良单交型"杂交组合.全生育期130 d,株型半紧凑,高抗倒伏,高抗大小斑病.一般单产6 750 kg/hm2,适宜我国西南及西北春播玉米区种植。     

邵武市茶业生产现状与发展对策

邵武市地处福建省西北部,武夷山南麓,史称南武夷.境内丘陵起伏,土层深厚,土壤肥沃.年平均气温14℃～18℃,年降雨量1787.3mm,年平均日照1690小时,具亚热带季风性湿润和丘陵山区气候特点.气候温和,雨量充沛,是茶树生长和产优质茶的适宜区.邵武产茶历史悠久,早在1923年以前就盛产茶叶,办有"元记"、"详茂"、"邱记"、"冯记"、"吉详"等数家茶行.在历史上是闽北重点产茶区之一.     

浙西南山区“马铃薯、鲜食玉米、秋黄瓜”三熟高产高效栽培技术

马铃薯、玉米是浙西南山区的主要粮食作物之一.过去当地农民种植马铃薯、玉米等作物均很少抓套种和复种.因此土地和光热资源利用率不高,农田种植收益也较差.近年来,为了优化种植业结构,大力发展效益农业,努力增加山区农民的经济收入,我们积极开展了"马铃薯套种春玉米再复种秋黄瓜"三熟种植模式的试验和示范.多年实践表明:采用"马铃薯、鲜食玉米、秋黄瓜"三熟种植方式,既能充分利用山区的光温资源,提高土地利用率;又可充分利用马铃薯根系分布较浅,玉米根系分布较深,分别吸收不同土层养分的优势,提高肥料利用率和土地的产出率,促使三熟作物增产增收,显著提高农田的种植效益.     

黄山市山区玉米高产栽培技术推广存在的问题及对策

农业部门在推广山区玉米高产栽培技术时,可能会受到很多不良因素的影响,如气候条件不佳、品种选择不合理、管理不规范、防治病虫害不及时、施肥不科学等。为了科学、全面地推广山区玉米高产栽培技术,相关学者要在分析山区玉米高产栽培技术推广现状的同时,深入了解在推广应用中遇到的各项问题,制定科学、有针对性的解决方案。鉴于此,以黄山市山区为例,分析山区玉米高产栽培技术推广中遇到的问题并提出相关对策。     

长阳山区马铃薯生产现状及其发展战略

通过长阳山区马铃薯生产现状的分析,从而明确"十五"时期马铃薯产业化建设的指导思想及发展战略.     

宁南山区马铃薯贮藏中存在的问题及对策

<正>马铃薯是宁南山区最具特色的区域优势作物,近年来在政府部门的大力支持下,种植规模逐渐扩大,总产量也大幅上升,与此同时马铃薯的冬贮问题也日趋突出。由于宁南山区受经济条件的制约,使得山区农户贮藏设施、贮藏方法、管理技术等方面存在着许多缺点和问题。因此,我们要大力提倡     

粤优938在浙南山区种植表现及高产栽培技术

粤优938在浙南山区种植表现高产、稳产、优质、适应性广、省肥易种、耐旱和抗稻瘟病能力较强等特点,适合山区作单季稻种植.总结了适时播种、适龄移栽、合理密植、科学管理肥水、协调群体、保粒增重、除虫治病等高产栽培技术.     

"马铃薯-双季优质杂交稻"耕作模式配套技术

湘南山区采取"马铃薯-双季优质杂交稻"耕作模式,能促进春粮生产,具有良好的生态和经济效益.介绍了该耕作模式的配套栽培技术.     

豫北优质大豆产业发展策略

针对豫北地区的大豆生产现状，从气候、土壤、品种、生态因素及市场需求等方面提出了优质大豆的发展策略与途径。     

Comparisons of methods of scheduling irrigations of potatoes

Irrigation of Netted Gem potatoes was scheduled during three growing seasons by three methods: (a) when plants displayed first visual symptoms of moisture stress, (b) when indicated by a soil moisture budget involving estimated evapotranspiration, and (c) on the basis of tensiometer readings of soil moisture suction. When the tensiometer method of scheduling was used, the mean yields of tubers were 55.0 and 25.8 cwt/acre (6160 and 2890 kg/ha) higher than those obtained with the other two scheduling methods. Methods did not affect the specific gravity of potatoes. Method (a) scheduled irrigations least frequently. Scheduling by the budget method was not always adequate because it was based on the assumption that the crop extracted water from a constant 4 ft (1.2 m) profile from planting to full vegetative growth. In one year the budget method scheduled the first irrigation earlier than necessary and delayed the second irrigation during a critical period of crop growth. From full vegetative cover to harvest the irrigation schedules were alike for both the budget and tensiometer methods.     

湖南沅陵4种绿茶品质成分分析

以长沙县高桥相同嫩度茶鲜叶原料采用卷曲形毛尖茶加工工艺制绿茶为对照,分别对沅陵县齐眉翠峰、凤娇碣滩茶、干发茶和军大坪茶4种绿茶的主要生化成分与感官品质进行初步分析。结果表明,沅陵4种绿茶的茶多酚总量28.76%~30.34%,游离氨基酸总量2.35%~3.22%,咖啡碱含量3.00%~3.63%,水浸出物含量37.26%~40.07%,可溶性糖总量5.46%~5.65%,可溶性蛋白含量1.50%~1.74%,类黄酮化合物总量1.16%~1.79%,叶绿素总量1.36%~2.01%,儿茶素总量13.53%~16.20%。与对照相比,4种绿茶的茶多酚、可溶性糖和儿茶素总量均高于对照,除齐眉翠峰外其余3种茶样水浸出物和叶绿素总量均高于对照,除干发茶外其余3种茶样类黄酮化合物总量均高于对照。     

吉林省平安农业科学院大豆所大豆研究工作报告

1　吉林省平安农业科学院大豆研究工作简介吉林省平安农业科学院大豆研究所 ,设在吉林省长春市西安大路种子大厦内。现有科技人员 6人 ,其中研究员 2人 ,农艺师 2人 ,技术员 2人 ,定向培养研究生 2人。大豆研究所的主要任务是选育稳产、高产、优质及抗病虫大豆新品种 ;同时密切     

Analysis of nutritional components of eight famine foods of the Republic of Niger

In the western Sahel, indigenous plants become important staples when cereal harvests are inadequate to support populations inhabiting that region of Africa. The purpose of this study was to assess the nutrient content of several of these edible wild plants. The leaves of the following seven plant foods were analyzed: Ziziphus mauritiana, Cerathotheca sesamoides, Moringa oleifera, Leptadenia hastata, Hibiscus sabdarifa, Amaranthus viridi, and Adansonia digitata. The fatty acid, vitamin E, carotenoid, selected mineral and amino acid contents of these plant foods were determined. These same analyses were performed on the fruit of the Adansonia digitata. In quantitative and qualitative terms, Amaranthus viridis was found to be an excellent source of protein. Its amino acid composition compared favorably to that of a World Health Organization (WHO) protein standard. It also contained considerable amounts of the two fatty acids that are essential in humans (linoleic and -linolenic) and a number of minerals including iron, magnesium, calcium and zinc. The leaves of Hibiscus sabdarifa contained an appreciable quantity of protein the composition of which was comparable to the WHO standard. The mineral content of the leaves of this plant was also exceptionally high; noteworthy was its high zinc content. H. sabdarifa also contained significant quantities of the two essential fatty acids. Ziziphus mauritiana was an excellent source of the essential fatty acid linoleic acid and several of the metals including iron, calcium, magnesium and zinc. Its content of other essential nutrients, however, was rather low. In general, Adansonia digitata leaves were nutritionally superior to the fruit of the tree; however, the fruit did contain useful quantities of potassium, phosphorus, zinc and -linolenic acid. The Leptadenia hastata leaves were an especially good source of lutein and -carotene. These data should be useful to the people who inhabit the western Sahel in helping them devise healthy diets during times when cereal staples are in short supply.     

防治水稻潜叶蝇的药剂筛选

通过对防治水稻潜叶蝇不同药剂、不同用量的田间对比试验,结果表明,32 g/kg的35%丁硫克百威拌种预防潜叶蝇效果最好,药效可达55 d以上,适宜在生产上推广应用。     

狗牙根诱变后代抗寒性评价

通过电解质外渗法和匍匐茎恢复试验对‘阳江’狗牙根及其12个通过形态鉴定选出的坪用价值高且花序密度低的诱变后代进行抗寒性鉴定。电解质外渗法结果表明:诱变后代间的抗寒性具有较大差异,其叶片半致死温度(LT₅₀)的变异范围为-7.6～-0.2℃(最低值与最大值相差7.4℃);参试材料抗寒性由强到弱依次为M18>M4>M26>M28> M22>阳江>M29>M31>M10>M37>M16>M1>M25,其中,有5个诱变后代抗寒性优于亲本,分别是M18、M4、M26、M28、M22。匍匐茎恢复实验结果表明:诱变后代M1、M22、M26、M31、M25在0℃和-5℃低温胁迫后的恢复生长率都高于亲本,恢复能力均优于亲本;M10、M37、M28在-5℃低温胁迫下,恢复生长能力低于亲本,抗寒性相对较弱,M16和M4在0℃和-5℃低温胁迫下,恢复生长率都低于亲本,抗寒性明显弱于亲本。综合2种方法鉴定结果显示:诱变后代M1、M25的恢复能力较强;M4、M28的叶片抗寒性较好,青绿期较长;M22、M18、M26的叶片抗寒性和匍匐茎恢复能力均较强;M29,M31的叶片抗寒性和匍匐茎恢复能力与亲本相似;M10、M16、M37的叶片抗寒性和匍匐茎恢复能力均较弱,整体抗寒性较弱。     

芦笋枯萎病病原鉴定

对造成福建省漳州市东山县的芦笋枯萎病病原菌进行分子鉴定,以期确定病原菌的属、种名,为防治该病害寻求理论依据。试验对分离纯化的病原菌核糖体DNA的ITS区进行测序,在Genbank中搜索其同源性并构建它们的系统发育树,结果表明：引起芦笋枯萎病的病原菌是镰刀属中的尖孢镰刀菌(Fusarium oxysporum),且病原菌之间的同源性高达89%,遗传差异不显著。     

实施茶叶优势区域规划促进川茶产业持续发展

为了充分发挥四川茶叶的比较优势和自然资源优势,进一步提高川茶产业竞争力和促进农民增收,在四川省委、省政府重视下,在开展特色茶叶产品研究的基础上,制订了<四川省茶叶优势区域规划>,以期通过"规划"的实施,在基地建设、规模化生产、产业化经营等方面取得新的突破,为四川省盆周山区和丘陵地区的农村经济发展和农民增收做出新的更大贡献.