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1.
为了验证益微生物肥在水稻上的应用效果，２００１年在建三江科研所稻田内进行了益微不同处理试验，现将试验结果总结如下：１试验基本情况试验设在建三江科研所种植水稻１７年的稻田内，土壤类型为草甸白浆土，有机质含量３．７％，pH值５．８。本田施磷酸二铵８kg／６６７m２，尿素１５kg／６６７m２，硫酸钾５kg／６６７m２，５月２３日插秧，规格３０cm×１３．３cm；灭草配方：阿罗津＋农得时二次施药。２试验设计大区示范，每处理１．５×６６７m２，水稻返青后施肥。处理１：益微生物肥２kg／６６７m２＋常规施肥。处理２：益微生物… 相似文献
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全程机械化是水稻生产的发展方向。我场于２０００年引进水稻盘育秧播种机、乘座式高速插秧机及配套的大型联合收割机，并制定了一系列机械作业技术标准。２００１年水稻生产全程机械化已推广７６６．７hm２，占全场水稻总面积的２１％，水稻平均产量５８０kg／６６７m２，高产田块达到６５０kg／６６７m２，比人工栽插的增产５．５％，稻谷色泽金黄，千粒重比人工栽插的增加０．５g～１．５g。同时，推广水稻全程机械化生产，减轻了劳动强度，提高了生产效率。２００２年我场水稻生产全程机械化面积将扩大到１６６６．７hm２，占水稻种植面… 相似文献
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为了探索水稻不同插期对其生育进程及产量效益的影响，我们进行了此项研究，现将研究结果总结如下：１试验地基本情况试验地设在８５０农场种子公司６号地，地势平坦，肥力均匀，土壤类型为草甸白浆土，耕层１８～２０cm，有机质含量４．２％，土壤pH值为６．４４。２试验处理与方法２．１试验处理：从５月１０日到３０日，每隔５d插一次，共插５次。２．２试验方法：采用小区对比试验，小区面积１００m２。３月１０日扣棚，４月１２日播种，５月１０日插秧。为保证试验的准确性，插秧全程由一人完成，田间管理与常规相同。品种：空育１３… 相似文献
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水稻抛栽高产配套技术研究 总被引：3，自引：0，他引：3
１９９５～１９９８年对水稻抛栽的高产配套技术进行了系统研究。结果表明,水稻抛栽的适宜叶龄为３．５～４．５叶,抛栽密度早稻为３０．０万～３６．０万蔸／ｈｍ２、晚稻为３３．０万～３７．５万蔸／ｈｍ２,基蘖肥与穗粒肥的比例早晚稻均以７∶３为宜,抛栽稻的立苗期为３～５ｄ,大田抛栽水层深度以１．０～１．５ｃｍ为好。 相似文献
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国内外的研究表明：硅素是禾本科作物正常生长必需的大量元素之一。在缺硅土壤和喜硅作物上施用硅肥,具有明显的增产效果。如东县地处沿海,由于受石灰性成立母质和长期种植水稻、三菱、棉花等喜硅的影响,土壤有效硅（SiO2,下同）含量仅有115～120mg／kg,远低于作物生长的临界值250mg／kg。早在80年代末和90年代初,如东县就在水稻、小麦、玉米、棉花等作物上陆续开展了硅肥施用效果与技术试验、示范和推广工作,一般增产幅度达8．2％～12．6％。为了进一步拓宽硅肥应用范围,1995～1996年,又在大麦上进行了试验,现将结果报告如下：1… 相似文献
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普绿牌绿农素是以木酢液为载体的广谱性、活性态多元复合微量元素肥料。它能够供给作物多种营养，促进生长，提高产量，同时它还具有抗病、抗虫、促早熟、改善品质等作用，是发展质量效益农业，生产有机绿色食品的理想肥料。２００１年洪河农场水稻办做了绿农素在水稻上的应用试验，结果如下：１试验材料及方法１．１供试地点洪河农场一区４—５号。地势平坦，土壤为潜育白浆土，表层黑土厚８cm，有机质含量５．５％，全氮０．３４％，全磷０．１０％，全钾２．０５％。１．２供试品种空育１３１，生育期１２７d。１．３试验方法５月２０日… 相似文献
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一、水稻在农业生产中的地位自８０年代初开始，全国水稻播种面积开始减少，到２０００年减少近２５０万hm２，约减７．３％。但我国方水稻播种面积时反而增长，其东北地区增长最快，约占整个北方水稻增加面积的８３．８％（见图１）。东北三省中又以我省增加最快，播种面积由２１万hm２增加到１６０万hm２，年平均增加万多公顷，年递增率超过１０％。目前水稻面积在全省农作物中仅次于大豆和玉米列第三位，但是单产水平最高，为６５００kg／hm２，稳产性好，产已经高于玉米居第一位。从生产效益看，水稻已成为农民收入最多的农作物。目前单… 相似文献
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为了促进监狱系统水稻增产增收，提高农业生产的科技含量，进行了水田应用植物生长调节剂试验，为此类产品的推广应用提供科学依据。１试验材料与方法１．１试验地情况试验地设在黑龙江省监狱局科研所，土壤为冲击型草甸土，质地肥沃，地势平坦。１．２试验材料肥宝、惠满丰、植乐、绿浓素、稻麦丰产王等。１．３试验处理A对照：施肥量为当地常规用量；B惠满丰：在水稻分蘖期、幼穗分化期、始穗期施用，每次１８７５ml／hm２；C植乐：移栽前７～１０d喷施，用量每袋（１００g）兑水３０kg；D绿浓素：施用量１５００ml／hm２，浓度为３００… 相似文献
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湖南省茶园土壤养分丰缺指标及配方施肥 总被引：5，自引：3，他引：5
对湖南省３６个县（市）６７个茶场的１３６份茶园土样进行了肥力水平测定。结果表明：茶园土壤ｐＨ适宜，钾素较丰富。土壤有机质含量０～２０ｃｍ土层为（２．４±０．０９）％，２０～４０ｃｍ土层（１．６０±０．０６）％。８５％的土样０～２０ｃｍ土层有机质含量超过１．５％，３８％的土样超过２．５％；４９％的土样２０～４０ｃｍ土层的有机质含量超过１．５％。全氮含量０～２０ｃｍ土层为（０．１３３±０．００４）％，２０～４０ｃｍ土层为（０．１００±０．００３）％。碱解氮含量大于１００ｍｇ／ｋｇ土的土样占７６％，２０～４０ｃｍ占４５％。全磷含量低于０．１％的０～２０ｃｍ土层达５３％，２０～４０ｃｍ土层达６２％。速效磷含量低于１０ｍｇ／ｋｇ土的频率，两土层各为４６％和６５％，显示低磷土壤较多。代换性镁含量较低，茶园严重缺镁。依据调查结果，建立了茶园土壤主要养分与茶叶产量之间的数学模型，据此提出了茶园土壤养分的丰缺指标：产量在２２５０ｋｇ／ｈｍ２干茶的茶园土壤０～４０ｃｍ土层全磷（Ｐ２Ｏ５）含量＞０．１２％，碱解氮含量＞１４９ｍｇ／ｋｇ土，速效磷含量＞３２ｍｇ／ｋｇ土，速效钾含量＞１１０ｍｇ／ｋｇ土。通过试验，确定了４种主要土类适? 相似文献
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黑龙江省农垦总局植保站 《北方水稻》2002,(2)
水稻育苗期壮苗用药应把安全性放在第一位。药剂浸种目的主要为了防治恶苗病，首选药剂为２５％施保克。最好与０．１５％天然芸苔素混合浸种，既防病又促进水稻生根，苗齐苗壮。方法：施保克、天然芸苔素各１０ml加水５０L浸５０kg种子，浸５～７d，不需水冲洗直接催芽播种。苗床消毒主要防治水稻立枯病。对水稻安全、药效好的杀菌剂有３０％土菌消、１５％恶霉灵、３％恶甲水剂（育苗青、育苗灵）、移栽灵等均比敌克松安全，发芽率高，幼苗长势好，防病效果好。用药量：３０％土菌消３ml／m２；１５％恶霉灵６ml／m２；３％育苗青、育苗… 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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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
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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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