共查询到20条相似文献，搜索用时 78 毫秒
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发展优势大豆多熟制模式，是旱地耕制改革的重要内容一，经过两年实践，引进筛选出春、夏、秋三季配套种植的优势大豆品种，总结了一套高产栽培技术，摸索出以“麦－豆－苕”为主体的一套多熟制栽培模式，充分利用了自然资源，培肥了地力，增加了土地产出和农民收入，实现了优势高产、高效。 相似文献
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浙江春大豆高产栽培技术研究 总被引：2，自引：2，他引：0
浙江春大豆高产栽培技术研究林昌庭（浙江省景宁县农业局，３２３５００）大豆是我县的主要旱粮作物，常年种植面积在２万亩以上。近年来，随着耕作制度的改革和种植业结构的优化，大豆生产已成为发展“一优两高”农业的重要途径。为了进一步提高春大豆的产量和种植效益。... 相似文献
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春大豆翻秋留种对春大豆春播齐苗全苗具有较强优势，但产量较低，通过播期、密度、施肥等筛选，择其适用的配套栽培技术，产量提高到1500kg/hm^2，明确了春大豆秋播留种高产栽培途径。 相似文献
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本文介绍了福建省育成的适应红黄壤山地种植开发的几个春大豆品种，对其进行了品比试验，研究了不同品种的产量结构以及高产栽培技术，对福建省春大豆生产具有一定意义。 相似文献
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河南省永城市地处黄淮海腹地,大豆以麦收后夏播为主。2008年以来通过高产创建活动,针对生产中存在的问题及大豆低产原因,实施以推广良种、良种良法配套为主线的技术方案,实现了万亩大豆超200公斤的高产目标,逐步完善了麦后夏大豆高产栽培技术。 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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为建立高油大豆优质高产同步旱作栽培体系,进行了抗(耐)旱高油高产大豆品种(系)筛选,土壤水份对高油大豆产量和油分含量的影响,蓄水保墒耕作技术研究,大豆行间覆膜栽培技术对产量的影响等单项研究及对高油高产抗旱单项栽培技术组装研究.结果如下:筛选出适宜黑龙江省大豆主产区种植的抗(耐)旱高油大豆品种黑农37、黑农41、黑农44、舍丰40、垦农4、红丰11、黑河27、合丰47;黑农41品种,任何生育时期受到干旱胁迫都会对其产量和油分含量造成负面影响,其干旱胁迫影响程度表现为:结荚-鼓粒期》鼓粒期》结荚期》花期》苗期,以结荚～鼓粒期干旱胁迫影响最大,可使单株产量下降27.1%,油分下降12.6%;秋翻秋起垄整地是较好蓄水保墒耕作技术,较春搅茬起垄有较明显增产效果,增产幅度为14.28%～16.67%;黑农44品种适宜种植密度垄上穴播为20～25万株hm-2,垄上双条播为25万株hm-2;大豆行间覆膜栽培技术在适应推广区域内是一项具有显著增产效果和推广价值的栽培技术,其增产幅度为13.55%～25.4%;提出建立高油大豆高产高油同步旱作栽培技术体系的最佳模式:以高油品种黑农44为核心,在蓄水保墒的秋翻秋起垄的耕作基础上,配之穴播 优化施肥(N7 P14 K10) 抗旱种衣剂 抗旱叶面肥 行间覆膜. 相似文献
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北方低湿耕地万亩春大豆高产配套栽培技术黑龙江省八五０农场，１５８４２２翟崇高赵松英张文禄范广仁丁凯杰谭明久黑龙江省八五０农场是国家“九五”科技攻关项目大豆大面积高产综合配套技术试验示范区。场域位于三江平原东部，虎林市境内，北靠完达山，南临穆棱河，多年... 相似文献
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《Plant Production Science》2013,16(2):189-198
AbstractGrain number per spike of wheat is lower in early sowing than in the conventional standard cultivation in Yamaguchi, Prefecture, Japan. Components of the grain number per spike in five cultivars were analyzed with respect to temperature during the spike development period throughout three growing seasons 2001/2002, 2002/2003 and 2003/2004 to find the cause of the problem of early sowing cultivation. The plants sown in early-October and late-November were called the early sown group and the standard group, respectively, in the following. Three of the five cultivars, Hokushin, Akitakko and Nanbukomugi, showed a strong winter habit, which requires very cold temperatures for spike differentiation. The other two cultivars, Iwainodaichi and Airakomugi, had a moderate winter habit. Grain number per spike and grain yield were decreased by early-sowing (compare with the standard group) in almost all cultivars throughout the three growing seasons. The three cultivars which had a strong winter habit had fewer spikelets per spike in the early-sown group than in the standard group. The other two cultivars which had a moderate winter habit had fewer grains per spikelet in the early-sown group. The higher the temperature during the spikelet formation phase, which is from flag leaf initiation to terminal spikelet initiation, the higher the number of spikelets per spike in the standard group. The spikelet number per spike in the early-sown group increased with the increase in productive tillers under fertile conditions. Such conditions also increased the grain number per spike. 相似文献
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《Journal of Crop Improvement》2013,27(2):415-432
Summary This paper reviews the effects of allelopathic interactions in agroecosystems in Spain on plant physiological activity and their ecological advantages. The phenological stage of growth of donor plants and the effective allelochemicals in the soil solution while studying the role of phenolic compounds were highlighting. Finally possible future prospects and conclusions regarding weed control by allelochemi-cals under integrated crop management strategies are discussed. 相似文献
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以翔实的资料对2009年中国稻米生产、消费、进出口、供求平衡、库存、价格走势、购销政策和国际稻米供求等情况进行了全面地分析,对影响2010年稻米市场价格走势的各种因素进行了深入研究,并在此基础上对2010年我国稻米市场价格走势进行了预测,结论是我国稻米价格仍呈上行趋势。 相似文献
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Corné Kempenaar Thomas Been Johan Booij Frits van Evert Jean-Marie Michielsen Corné Kocks 《Potato Research》2017,60(3-4):295-305
Precision agriculture is a farming management concept based on observing, measuring and responding to inter- and intra-field variability in crops. In this paper, we focus on responding to intra-field variability in potato crops and analyse variable rate applications (VRAs). We made an overview of potential VRAs in potato crop management in The Netherlands. We identified 13 potential VRAs in potato, ranging from soil tillage to planting to crop care to selective harvest. We ranked them on availability of ‘proof of concept’ and on-farm test results. For five VRAs, we found test results allowing to make a cost-benefit assessment. These five VRAs were as follows: planting, soil herbicide weed control, N side dress, late blight control and haulm killing. They use one of two types of spatial data: soil maps or biomass index maps. Data on costs and savings of the VRAs showed that the investments in VRAs will pay off under practical conditions in The Netherlands. Savings on pesticide use and N-fertilizer use with the VRAs were on average about 25%, which benefits the environment too. We foresee a slow but gradual adoption of VRAs in potato production. More VRAs will become available given ongoing R&D. The perspectives of VRAs in potatoes are discussed. 相似文献
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Summary Diurnal changes in net photosynthetic rate were measured in a furrow-irrigated potato crop and in a riverbed crop where the
water table was always maintained at 20–28 cm from the soil surface. In the irrigated crop, the photosynthetic rate during
mid-afternoon was about half the peak rate observed at noon. This reduction was accompanied by a near tripling of stomatal
resistance, a 45% reduction in transpiration, and a 5-fold increase in the difference between leaf and air temperatures. No
such changes were observed in the riverbed crop where the photosynthetic rate remained nearly constant at about 0.9 mg m−2 s−1 between 9 a.m. and 4 p.m. Tuber yield in the riverbed crop was about 30% higher than in the irrigated crop. 相似文献
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体细胞无性系变异是一种重要的细胞工程育种技术,其应用于棉花育种的前提是建立高效的组织培养诱导再生植株体系.本文简要综述了棉花离体诱导植株再生研究的现状,重点讨论了棉花体细胞无性系变异的表现、利用方法及机理,提出了当前研究存在的问题并对今后的研究进行了展望. 相似文献