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充分利用我国亚热带地区资源发展冬大豆生产云南省农工厅粮油处周边生云南省种子公司魏才鹿云南省农科院粮作所王玉兰耿智德一冬大豆的分布概况世界大豆种植绝大部分分布在温带地区，但近几年，热带和亚热带国家对发展大豆生产投入了极大的热情，印度、巴西阿根廷及墨西哥... 相似文献
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绿色鲜食大豆产自于洁净生态环境，生产过程不使用有害化学农药及化学肥料，是一种安全、优质与绿色的保健食品。目前，国内外比较畅销。云南省德宏自治州空气、水质争土壤环境良好，土质肥沃，冬春光照充足，热值量高，适合绿色鲜食大豆的开发利用。建议各政府在适宜地区建立绿色鲜食大豆生产基地，以拉动德宏州质量效益型和外向型农业向前发展。 相似文献
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论黑龙江垦区大豆生产水平提高原因及发展建议李玉成朱晶尹胜利（黑龙江省农垦总局农业处）（黑龙江省农垦科学院）（黑龙江省八五一农场）一、黑龙江垦区大豆生产状况随着社会的发展，科技的进步、生产管理水平的逐步提高，黑龙江垦区大豆生产水平（单产）迅速提高，产量... 相似文献
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系统地分析了我国大豆生产与世界大豆生产的差距；阐述了安徽省发展高蛋白大豆在品种资源、生态条件、科研水平及生产规模、交通运输、加工转化方面的优势，提出了发展高蛋白大豆生产的指导思想和具体目标。 相似文献
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发展大豆生产“八改”技术措施天津市种子公司张存信近年来，天津市为了发展大豆生产，在解决认识问题的基础上，改变过去传统的种植习惯，通过常规技术的组装配套，新技术的推广应用和增加物资投入，使大豆生产水平登上一个新台阶，全市大豆单产已突破１００公斤，并出现... 相似文献
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安徽省大豆生产现状及特点 总被引：4，自引：1，他引：4
本文概述了安徽省大豆种植的分布及建国后50年的大豆生产发展概况，较详细地论述了安徽省大豆生产的九大特点：（1）大豆种植遍布全省；（2）以夏大豆生产为主；（3）以一年多熟制为主；（4）是我国高蛋白大豆主产区；（5）集约化种植水平较低，品种类型多；（6）加工利用尚处于初级阶段；（7）品种资源丰富；（8）大豆育种水平先进；（9）大豆栽培新技术的推广促进了生产发展。文中还指出了安徽省大豆生产中应注意的几个问题。 相似文献
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宁夏大豆生产的发展方向及栽培途径宁夏农林科学院农作物研究所·７５０１０赵志刚罗瑞萍大豆是宁夏主要的经济作物，过去因大豆产量较低，一度被人们冷落。近年来，由于人们生活水平日益提高，膳食结构逐步改善，食品工业和饲料工业对大豆需求量的增加，以及大豆生产具有... 相似文献
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俄罗斯远东地区大豆科研生产概况黑龙江省农科院黑河农科所白雪梅远东地区是俄罗斯大豆的主产区，其大豆产量占全国的９０％。因此，远东地区的大豆生产水平也是俄罗斯的大豆生产水平。一、远东地区大豆科研现状俄罗斯大豆科研机构集中设在远东地区；主要机构有：全俄大豆... 相似文献
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云南省冬大豆高产栽培技术 总被引：2，自引：2，他引：0
冬大豆产量受品种生产能力，环境条件，栽培技术水平的综合影响。选出高产优质品种“661”，应用大豆高产理论与技术，以增加单位面临株数，提高单棉英粒数和粒重为原则，利用热区冬春光热资源，在栽培上采取适宜的技术，创造了单产268.14kg/667m^2的云南省冬大豆单产最高纪录，为冬大豆高产提供了科学依据。 相似文献
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Textile fibers were obtained from secondary polyethylene terephtalate (PET) and its mixtures with primary PET at initial orientation of 18000–33000 %, rate of additional orientation drawing 3.5–6.5 times and temperature of thermal fixation 363–413 K. The fibers’ tensile strength was found to decrease and elongation at break to increase with the decrease of their linear density under the conditions of fibers formation. For the fibers based on polymer mixtures, the presence of oxidized fragments in the secondary PET limited the compatibility of the two polymers which resulted in deteriorated tensile properties. The linear density (4–16 dtex), tensile strength (30–50 cN/tex) and elongation at break (20–60 %) of the PET fibers obtained were close to these for the industrially produced polymer fibers. The values of the average diameter of the fibers formed and oriented under laboratory conditions allows classifying them between the fine and the coarse textile fibers which makes them suitable for the textile industry. 相似文献
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Gas-exchange characteristics of potato (Solanum tuberosum L.) canopies were determined with crop enclosures under condition of optimal water supply, during soil water depletion, and during recovery from drought-stress. The plants were grown under a rainshelter in large containers with 2-m2 surface area. Control plants received water throughout the growth period. In Expt. 1, transient drought was imposed by interrupting water supply completely for 22 days. During the 33-day period of drought treatment in Expt. 2, the stressed plants received half the amount of water that was given to the control plants (irrigations 2–3 times per week).
During soil water depletion, stomatal conductance of the canopy was reduced earlier and more than photosynthesis. This resulted in a lower internal carbon dioxide concentration in the leaves of stressed plants and a higher ratio between photosynthesis and stomatal conductance. The value of that ratio increased as soil water potential dropped.
Water-use efficiency ( ) increased during drought stress. The cultivar Bintje showed a larger ratio between photosynthesis and stomatal conductance of the canopy and a higher than cv. Saturna, both for optimal water supply and during drought stress.
Photosynthesis and conductance of the canopy started to recover immediately upon rewatering, even when relative values had declined to 20–30% during the preceding stress period. After release from stress, the leaves in the top layer of the canopy had a higher stomatal conductance in treated plants than in control plants. 相似文献
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2017—2018年,在同安镇粮食产能区示范推广水稻病虫害绿色防控与统防统治融合技术模式,取得了显著成效。融合技术示范区比常规区减少用药2~3次,用药量减少37.6%,防治成本降低400元/hm^2;水稻产量增加12.8%,收益增加2 835元/hm^2。 相似文献
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《Journal of Crop Improvement》2013,27(1):313-324
Summary Arbuscular mycorrhizae were inoculated into phosphorus-deficient soil fertilized with either organic or chemical fertilizer with cucumber (Cucumis sativus L.) as the first crop and lettuce (Lactu-ca sativa L.) as the second crop but without additional fertilization and AM inoculation. AM increased dry matter and fruit yield of cucumber significantly in the unfertilized, organic-fertilized and P-deficient plants compared with the fully chemical-fertilized plants. AM inoculation increased the available phosphorus in plant and soil by around 30% for all treatments except for those chemically-fertilized. The rate of AM infection did not differ significantly among the fertilization treatments, but the infection intensity was higher in unfertilized, organic-fertilized and phosphorus-deficient treatments than chemical-fertilized treatment. The residual effects of AM-inoculated to cucumber were evident for lettuce in all pre-treatments that were unfertilized and un-inoculated for the second cropping. Without P-fertilization, neither crop could grow optimally even when the soil was inoculated with AM, suggesting that AM could not serve as a substitute for phosphorus fertilizer. However, the other beneficial effects of AM on crop growth and yield could not be fulfilled with phosphorus fertilizer. 相似文献
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生物质能作物——甘薯开发利用现状及趋势 总被引：13，自引：0，他引：13
甘薯是世界上重要的粮食、饲料、工业原料及新型能源用块根作物，在我国乃至世界再生能源开发中起到重大作用，其分布地域广，适应性强，沙荒地、岗坡地均可种植。生物产量高，而且种植栽培容易。甘薯含淀粉15％～30％，晒干率20％～35％，世界各国以薯干或淀粉为原料生产乙醇有着悠久的历史。随着全球能源的日趋紧张，乙醇作为一种可再生的环保燃料．将快速步入全球成品油市场，在替代汽油供应方面起到越来越大的作用。各国正在推行或制定燃料乙醇计划，并着眼于生物燃料乙醇应用方案，认为甘薯可能是摆脱将来粮食和能源危机的“最后一张王牌”。 相似文献
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为明确春季调控措施对冬小麦生长发育和籽粒产量的影响,以冬小麦品种石新828为材料进行田间试验,4个处理分别为:起身期追全部氮肥(除基肥外,下同)并叶面喷多效唑(N1);起身期追2/3氮肥并喷多效唑+拔节期追1/3氮肥(N2);起身期追1/3氮肥+拔节期追2/3氮肥(N3);拔节期追全部氮肥(N4)。生育期间测定群体和个体生育特性,成熟期调查产量性状。结果表明,N1和N2处理小麦拔节期的总茎数、叶面积指数(LAI)和干物质积累量均显著高于N4和N3处理。孕穗期N4和N3处理小麦的总茎数、LAI和干物质积累量显著高于N1和N2处理。开花到成熟期各处理的总茎数、LAI和干物质积累量差异均不显著。孕穗期前,不同处理的株高差异不显著,孕穗期后,N4处理的株高最高,且显著高于N1处理。各处理基部节间直径和中上部节间长的差异不显著,N4处理基部第一节间长度显著大于其他处理。随追氮时期前移或前期施氮量增多,不孕小穗数减少,结实小穗和穗粒数增加,N1比N4处理不孕小穗数显著减少,结实小穗和穗粒数显著增多。N1处理小麦成熟期的千粒重最高,且显著高于N4处理。N1处理的籽粒产量最高,且显著高于N3和N4处理。起身期追氮配合多效唑调控,可以获得比拔节期追氮更高的穗粒数和千粒重,从而获得更高的产量。 相似文献
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施镁量和施镁方法对烤烟生长发育和烟叶产量的影响 总被引：4，自引：0，他引：4
采用盆栽试验，研究施镁量和施镁方法对烤烟生长发育和烟叶产量的影响，结果表明：适量施用镁肥，可以促进烟草的生长发育、改善其农艺学性状，影响烟株对其它营养元素的吸收与积累，提高烟叶产量，并能使烟叶N，P，K，Ca等营养元素含量更趋协调。随着施镁量的增加，烟叶中镁含量提高10．7％～71．4％，烤烟单株吸镁量、叶片叶绿素含量、干物质产量分别提高17．6％～115．4％，1．9％～23．ooA和6．3％～25．7％，而对烟叶含钾量没有明显影响。在镁比较缺乏的土壤上，镁肥作基肥施比叶面喷施的效果好，基肥施镁结合叶面喷镁的效果最佳；叶面喷镁，肥料用量少、成本低、见效快，是一种有效的镁肥施用方法；提高镁肥用量，施镁的效果更加显著。 相似文献