晚茬大麦催芽机播技术

研究总结了啤酒大麦种子的发芽条件，大批量麦种用于机播的浸种催芽方法，催芽种子遇雨时的控芽技术及催芽种子的机播技术。     

吉林长白山人参种子催芽方法

<正>人参种子的胚具有缓慢发育的特性,当年采收的人参种子的胚,并没有完全发育成熟,在实际生产中还需要创造一定的环境条件进行人工催芽,才能促使种胚完成形态分化和生理后熟。只有经过催芽处理的种子当年秋播或翌年春播后方能正常发芽和出苗,现将我们总结掌握的人参种子催芽技术介绍如下:1室外催芽室外催芽多采用隔年种子,春季催芽。方法:     

提高水稻不育系丰源A种子发芽率的技术探讨

对提早收割的丰源A南繁种子进行了不同浸种和催芽方法试验,结果表明,采用变温处理及赤霉素、强氯精溶液浸种对解除种子休眠均有一定效果,能在一定程度上提高种子发芽率;特别是用150倍强氯精溶液浸种12 h加煤灰拌种催芽,可达到种子消毒杀菌及安全快速催芽效果.     

寒地水稻智能程控浸种催芽关键技术

阐述了机械种子包衣、集中浸种、集中催芽、低温晾芽等几项寒地水稻智能程控浸种催芽的关键技术,其中从包衣温度条件、保证药膜固化、种子防晒防冻、种子贮存、浸种棚控温、浸种备水与注水、浸种保温及增氧、催芽洗种、快速升种温、适时排水、保温破胸、保温催芽等方面详细说明了这些技术应用时应注意的事项。     

人参水籽大棚催芽技术试验研究

抚松县人参种子催芽播种方式有三种:一是伏播隔年种子,靠床土自然催芽。二是隔年种子在六月中旬采用箱槽式催芽法。三是当年种子箱槽式催芽法。第一种方式因完全是在人工无法控制的自然条件下进行,易     

杂交早稻温水快催芽技术

1989年和199.0年,我们用威优49作杂交早稻栽培,两年均采用温水快速催芽技术,其发芽率分别达到91.3%和93.5%。不同的催芽方法对比表明,不论杂交早稻或杂交晚稻,其种子催芽均以干催为好。这样进行种子催芽,破胸整齐,发芽率高。 杂交稻种子的浸种催芽为什么以干催为好?这是因为杂交稻种子与常规稻种子比较,具有四个明显不同的生理特点。一是杂交稻在制种时授粉时间较长,有先后差别,种子成熟度不一致,成熟度高的种子,浸种催芽发芽势强,发芽快而齐;成熟度低的种子,发芽势弱,发芽慢且不整齐;如用作杂交早稻时,还往往发生部分参差不齐的弱小种芽由…     

玉米种衣剂对种子萌发和生长的影响

本文以黑301玉米品种为材料研究了种衣剂对玉米干种子及催芽后包衣种子萌发、种苗初期生长和产量的影响．试验结果表明，种衣剂对干种子包衣的种子有促进萌发、提高发芽势、发芽率、促进生长和增产作用；对催芽后包衣玉米种子降低发芽势，影响出苗日期，但有增产作用。     

玉米种育剂对种子萌发和生长的影响

本文以黑３０１玉米品种为材料研究了种衣剂对玉米干种子及催芽后包衣种子萌发，种子初期生长和产量的影响，试验结果表明，种衣剂对干种子包衣的种子有促进萌发，提高发芽势，发芽率，促进生长和增产作用，对催芽后包衣玉米种子降低芽势，影响出苗日期，但有增产作用。     

晚茬大麦催芽机播技术

研究总结了啤酒大麦种子的发芽条件,大批量故意种用于机播的浸种催芽方法,推芽种子遇雨时的控芽技术及健芽种子的机播技术。     

大型水浴式集中催芽器与恒温催芽箱催芽效果对比试验

为实现100%集中催芽,以大型水浴式集中催芽器与恒温催芽箱对比,二者在相同催芽时间内相差不大;大型集中催芽器催芽后在空气温度内堆温出芽效果较好,与恒温催芽箱早生率差35.8%,晚生率多35%。大型水浴式集中催芽器可提高催芽效率,每次可催30 t种子,可完成400 hm2的育苗任务,10 d可催出200 t种子;节省人工,节约资金;突出了统一供种的模式,为实现集约化、工厂化育苗、供苗奠定了坚实的基础。     

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。     

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.     

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。