两系杂交中籼稻徽两优6号母本抛秧高产制种技术

2009年在安徽巢湖制种基地进行两系杂交水稻徽两优6号(1892S/扬稻6号变异株)母本抛秧制种20hm2,平均单产2.96 t/hm2,最高单产3.65 t/hm2,种子纯度99%以上.提出了该组合母本抛秧制种优质高产的配套技术.     

两系超级杂交水稻新组合Y两优1号优质高产制种技术

2005年在湖南绥宁县武阳制种基地试制两系超级杂交水稻Y两优1号(Y58S/9311)0.78 hm2,平均单产2.97 t/hm2,最高单产3.46 t/hm2,种子纯度在99%以上。初步掌握了其双亲的特征特性,提出了优质保纯高产制种的相应技术措施。     

高产优质两系杂交水稻新组合Y两优5867制种技术

2011年江西科源种业在江西进行了500 hm2 Y两优5867制种生产,平均单产达2.1 t/hm2,最高单产3.3 t/hm2.结合父母本特征特性,总结了该组合在江西高产制种技术措施.     

两系杂交稻组合C两优608优质高产制种技术

2009—2013年在湖南省永州市江永县松柏制种基地制种两系杂交水稻C两优608(C815S/R608),5 a加权平均单产3.22t/hm2,最高年份单产3.55 t/hm2,种子发芽率在85%以上,纯度在99%以上。结合其双亲的特征特性,提出了优质保纯高产制种的相应技术措施。     

杂交水稻轻简制种技术在徽两优3号中的应用

在徵两优3号制种中采用父本机播盘育机插、母本直播的轻简化制种技术,取得了1.66～2.66 t/hm2的较高产量,同时具有高效、节本的优势。总结了其技术措施。     

准两优527在桂南高产保纯制种技术研究

经2003年的小面积试制后,2004年两系杂交稻新组合准两优527在广西武鸣县制种80 hm2,平均单产2.91 t/hm2,最高单产4.81 t/hm2;经海南种植鉴定,所产种子纯度平均为99.2%.总结了准两优527制种亲本的特征特性和在武鸣高产保纯制种的主要技术.     

两系杂交水稻Y两优1号母本直播制种特性初步研究

2009年在湖南绥宁县武阳制种基地对两系超级杂交水稻Y两优1号母本直播制种技术进行了试验研究,结果表明:母本直播制种抽穗开花早且集中,单位面积母本最高苗数、有效穗数、总颖花数均高于移栽制种,但每穗总粒数、结实率、千粒重均略低于移栽制种,产量与移栽制种相当。在同等产出的条件下,母本直播制种省去了移栽环节,缩短了播始历期,达到了省工、省时、省成本的目的。     

汝城县两系杂交稻制种连续10 a优质稳产的技术总结

湖南省汝城县1994-2003年共制种两系杂交稻1 074 hm2,连续10 a获得优质稳产,最高单产达5.25 t/hm2.介绍了该县两系杂交稻的发展概况及优质稳产的制种技术.     

杂交中籼新组合徽两优106母本直播制种技术

杂交水稻母本直播制种技术是目前杂交稻轻简化制种应用的主要技术之一。徽两优106是萍乡市农业科学研究所、江西农嘉种业有限公司和安徽省农科院水稻研究所共同选育的高产稳产抗稻瘟病一季杂交水稻组合。其母本1892S茎粗、株型好、抗倒、异交率高,父本萍恢106株型好、分蘖力强、花粉量大,制种与母本错期较小,适宜母本直播制种。该组合2016—2018年连续3 a采用母本直播方式制种,平均产量3.0 t/hm~2以上,实现了高产高效目标。     

超级杂交稻Y两优3218在田东县示范种植高产栽培技术

广西田东县2010年早稻承担超级杂交稻新组合Y两优3218 6.67 hm2连片高产示范项目,平均单产为10.13 t/hm2,示范获得成功。介绍了该组合配套高产栽培技术。     

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。     

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。     

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.     

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.     

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。     

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。     

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。     

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.