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黑土区大豆超高产栽培技术试验研究 总被引：1，自引：1，他引：0
大豆超高产栽培技术试验研究是国家“九五”期间农业科技攻关重中之重项目“大豆大面积高产综合配套技术研究开发与示范”中的重要技术攻关课题。我市自1995年起承担此项目,以亩产260～300公斤为目标,在对单项技术措施研究、筛选的基础上,进行综合组装,形成大豆超高产栽培... 相似文献
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“九五”国家重中之重科技攻关项目“大豆大面积高产综合配套技术研究开发与示范”课题，自１９９５年启动，１９９６年开始全面实施，由于黑龙江省委、省政府的重视，由于承担课题任务的各个科研单位、生产单位以及市、县、场各级政府和有关部门的共同努力，协同动作，１... 相似文献
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组装集成示范带动实现大豆大面积高产—大豆大面积高产综合配套技术研究开发与示范初报何志鸿（黑龙江省科学技术委员会·哈尔滨，１５０００１“大豆大面积高产综合配套技术研究开发与示范”课题包括五个专题，任务目标：一是综合组装先进适宜的增产技术，在一千万亩的大... 相似文献
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黑龙江省桦川试区课题组! 《大豆科技》2000,(5):5-6
根据“大豆大面积高产综合配套技术研究开发与示范课题总体方案”的要求 ,进一步增强高产攻关意识 ,课题要求及各项任务指标如下 :1、总体设计与产量指标( 1 )总体任务 :示范区 3万亩 (总局指标 6万亩 ) ,辐射区 2 0万亩。( 2 )任务落实及指标 :我场示范区依据三江平原科技攻关优势 ,结合我场示范区的生态特点 ,通过大面积示范提高技术集成 ,以加速科研成果转化和科技的显示率为主攻方向 ,6个作业区均为示范基点 ,组装大豆大面积机械化综合配套技术 ,带动农场及垦区大豆产量全面提高 ,使示范区、辐射区全面完成国家下达的课题任务指标。 (见… 相似文献
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国家"九五"重中之重科技攻关课题"大豆大面积高产综合配套技术研究开发与示范"取得重大成果 总被引：1，自引：0，他引：1
0前言 "地下软松松,地上机声隆,天上飞喷忙,豆田绿葱葱",这是试验区内广大农户和农场职工对"大豆大面积高产综合配套技术研究开发与示范"实施现场及效果的描绘和赞许,也道出了课题新形成的现代化大农业"大豆工程化栽培技术"蕴含着的重大科技进步及寄希望之声,更展示了现代化大农业大豆生产的崭新图画及美好前景. 相似文献
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本项研究是国家“九五”重中之重科技攻关项目“大豆大面积高产综合配套技术研究开发与示范”课题的第三专题的部分研究内容。通过招标,由中国农业大学、中国科学院沈阳应用生态研究所和解放军农牧大学承担,协作单位是黑龙江省农业科学院植保所、解放军总后嫩江基地及八... 相似文献
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大豆高速气力精密播种机的研制与开发 总被引：3，自引：0，他引：3
本项目是国家“九五”科技攻关重中之重项目《大豆大面积高产综合配套技术研究开发示范》的子项《大豆精密播种机研制与开发》的研究内容。主要任务是将国内外的精播大豆的先进技术和成果进行高度集成、组装、研究,研制开发适应于大豆机械化高产模式的精密播种机。并为现... 相似文献
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0前言 自1995年黑龙江省承担"大豆大面积高产综合配套技术研究开发与示范"课题以来,我省和来我省工作的中直单位以及湖南、河南等兄弟省区的专家学者、科技人员、各级领导干部、农民工人,在省委、省政府的正确领导下,按照课题的设计技术路线和总体实施方案,经过5省区6年的努力,依靠科技,各个试区的试验基点,超额完成了国家交给我们的攻关任务."一田三区"累计达6千多万亩,单产平均提高59.3公斤,增产大豆37.6亿公斤,增收76.3亿元;同时带动全省3000万亩大豆平均亩产增加10.5公斤,大豆加工增值5.3亿元;带动玉米、水稻、小麦攻关增值78亿元.没有辜负党和国家对我们的厚望、没有辜负亿万人民对我们的期望. 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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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