滇一型不育系黎榆A高产繁殖技术

黎榆A是云南农业大学利用滇榆1号A×(黎明×滇榆1号)育成的育性稳定、配合力较强、农艺性状优良的籼粳交偏粳型的滇一型不育系,介绍了黎榆A的特征特性,总结了单产超过3.75 t/hm2的高产繁殖技术.     

杂交粳稻新组合滇杂35高产栽培数学模型研究

采用二次回归正交旋转组合设计,研究杂交粳稻新组合滇杂35产量与栽插密度及N、P、K施用量间的关系,建立了各因素与产量的数学模型。各因素对滇杂35产量影响大小依次为栽插密度施氮量施钾量施磷量。提出了滇杂35获得8.42t/hm2以上产量的栽插密度及N、P、K施用量优化配比方案:即栽插密度24.743万～27.345万穴/hm2,N施用量257.625～306.900kg/hm2,P2O5施用量151.725～178.275kg/hm2,K2O施用量165.525～199.950kg/hm2。     

滇一型不育系黎输A高产繁殖技术

黎榆A是云南农业大学利用滇榆 1号A× (黎明×滇榆 1号 )育成的育性稳定、配合力较强、农艺性状优良的籼粳交偏粳型的滇一型不育系 ,介绍了黎榆A的特征特性 ,总结了单产超过 3 .75t hm2 的高产繁殖技术     

新香A繁殖及其系列组合制种高产技术总结

新香A繁殖与新香优80、新香优63制种连续2 a在湖南绥宁县获得高产,2001年平均入库单产繁殖3.08 t/hm2,制种3.57～4.22 t/hm2;最高单产繁殖4.38 t/hm2,制种5.40 t/hm2.针对新香A的特征特性, 其异交栽培技术关键主要有两个方面:一是选择具适温高湿天气的基地与扬花季节;二是围绕提高母本抗倒伏力的肥水管理与"九二○"喷施技术.同时针对新香A这种分蘖能力强的不育系,提出了合理稀植同样可以培育出高产苗穗群体的观点.     

两优培九作单季晚稻大面积示范高产栽培技术

两系杂交稻两优培九2003年在浙江永嘉进行了单季晚稻"千亩示范片"高产示范,平均单产达9.80 t/hm2,比三系杂交稻协优914增产3.0 t/hm2左右,最高产量达10.42 t/hm2,在温州市首次获得两系杂交稻大面积平衡高产.介绍了该组合的示范概况和表现,总结了其主要栽培技术.     

新香优207高产制种技术

2003年新香优207在永兴县柏林基地制种25 hm2,获得高产,平均单产3.84 t/hm2,最高单产5.1 t/hm2.总结了新香优207高产制种技术,针对新香优A的特征特性,其技术关键是围绕提高母本抗倒伏力的肥水管理与喷施"九二○"技术.     

旱地甘蔗“千亩万吨”高产新技术示范

介绍了旱地甘蔗"千亩万吨"目标提出后,农场进行的3年示范性探索并取得的重要进展.2007年1900 hm2甘蔗面积,实际入厂糖料蔗25.6万t,平均单产达134.9t/hm2;其中核心示范区第十三生产队连片甘蔗82.5 hm2率先实现"千亩万吨"目标,总产糖料蔗12811t,平均单产达155.28t/hm2.初步形成了"千亩万吨"高产、高糖、无公害、标准化栽培技术规程和昌菱特有的技术推广创新模式.     

培杂山青秋制大面积高产经验

广西北流市种子公司 1998年秋制培杂山青 160hm2 ,平均产量 2 .83t/hm2 ,高产田块达 3 .9t/hm2 。总结了两系杂交水稻培杂山青秋制高产的技术要点     

杂交粳稻滇杂33高产制种技术

滇杂33(榆密15A/滇农R-3)是云南农业大学选育的杂交粳稻组合, 2004年10月通过云南省品种审定,在云南省各粳稻区种植表现出优质、高产、抗病的特点.根据滇杂33多年制种实践,并结合双亲主要特征特性,总结了该组合高产制种技术.     

渠县超级杂交中稻“种三产四”丰产工程高产栽培技术

2014年渠县渠南乡李坝村实施超级杂交中稻"种三产四"丰产工程10.93 hm2,平均产量10.74 t/hm2,最高达13.32t/hm2。总结了其配套高产栽培技术。     

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。     

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.     

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。