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为探讨超级稻—再生稻在湘潭的推广应用前景,以‘深两优5814’与‘隆两优华占’为材料,在湖南湘潭县开展了较大面积的超级稻—再生稻示范种植。结果表明:超级稻头季产量为9900~10 650 kg/hm~2,再生季产量可达3300~3735 kg/hm~2;头季与再生季成本分别为9288和1950元/hm~2,两季总纯收入为26 697~27 417元/hm~2,较一季超级稻增收40.84%~53.06%。可见,超级稻—再生稻增产增收效果显著,且具有良好的社会效益与生态效益,在湘潭地区具有广阔的推广应用前景。 相似文献
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宁化县烟后超级稻高产栽培技术 总被引：2，自引：0，他引：2
宁化县2008年全县超级稻种植面积达到1.22万hm2(其中烟后超级稻7 253.3 hm2,中稻4 980hm2),安排33.3 hm2以上核心片4个,主要组合为Ⅱ优航2号、Ⅱ优航1号、特优627等.经省、市农业部门组织专家对城南乡龙下窠村核心片进行现场测产验收,面积37.3 hm2加权平均产量10 582.5kg&m2(其中高产田块平均产量11 962.5 kg/hm2,中产田平均产量10 873.5 kg/hm2,低产田平均产量10 009.5 kg/hm2),比同类田对照增产1 210.5 kg/hm2,增幅12.9%,获得良好的示范增产效果.现将大面积产量水平超10.5 t/hm2栽培技术总结如下. 相似文献
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《杂交水稻》2016,(4):47-53
在湖南长沙以超级稻Y两优1号为材料,研究了机插秧条件下栽插密度和施氮量对产量表现及氮肥利用率的影响。结果表明:产量随机插密度增加而增加,随施氮量的增加先增后降,机插密度和施氮量均通过增加有效穗数来增加产量;产量最高的处理组合为N1D1(施氮量170 kg/hm~2,密度36.4万穴/hm~2,产量9.57 t/hm~2),其次为N1D2(施氮量170 kg/hm~2,密度为28.6万穴/hm~2,产量9.45 t/hm~2)和N2D1(施氮量240 kg/hm~2,密度为36.4万穴/hm~2,产量9.38 t/hm~2)。降低施氮量或增加机插密度能提高氮肥吸收利用率和氮肥偏生产力。在施氮量为170 kg/hm~2、机插密度为28.6万~36.4万穴/hm2条件下,既可以获得高产,又可以提高氮肥利用率。 相似文献
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籼粳杂交中稻新组合甬优4149在新晃县高产栽培技术 总被引：1，自引：0，他引：1
《杂交水稻》2017,(5):41-42
2016年籼粳杂交稻新组合甬优4149在湖南省新晃县示范种植8.06 hm~2,平均产量为13.01 t/hm~2,通过示范种植,掌握了该品种的特性,并总结了其高产栽培技术。 相似文献
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湖北省荆州市地处长江中下游,植棉条件优越,是湖北省乃至全国重要的优质棉产棉区.20世纪90年代以来,随着农村产业结构调整、植棉技术水平的进步以及油后棉种植面积逐年增加,使荆州棉区棉田耕作制度出现了新的变化,油棉连作已逐步成为荆州市棉区的主要耕作制度. 相似文献
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基于柑橘大实蝇的发生规律及特点,结合当地目前主要的防控措施,对湖南省怀化市靖州县柑橘大实蝇设计了频振灯诱杀防治、果瑞特诱杀剂防治以及化学药剂防治,分析比较各类方法的防治效果及可推广性。通过试验比较,果瑞特诱杀法防效明显优于其他两种诱杀方法,施用果瑞特后虫果率为6％以下,防治效果达90％以上。 相似文献
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对湖南省靖州县2008年测土配方施肥项目土壤检测结果与1979年第2次土壤普查结果进行了比较分析,结果表明,靖州县耕地中全氮、碱解氮、有效磷含量增加,有机质、速效钾含量减少,土壤酸化加剧,这与靖州县农民施肥习惯、耕作制度发生改变有关。据此提出了增施有机肥、推广测土配方施肥、石灰调酸和加强耕地质量保护等对策。 相似文献
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Krishna Kumari S Thayumanavan B 《Plant foods for human nutrition (Dordrecht, Netherlands)》1998,53(1):47-56
Scanning electron microscope (SEM) pictures of small millet starch granules showed more large polygonal and few small spherical or polygonal granules. The granules of small millets resembled those of rice starch granules. The size of the starch granules ranged from 0.8–10 m. The size of the granules was larger in barnyard millet and smaller in proso millet. Several granules showed deep indentation caused by protein bodies. SEM of starch isolated from 24 hour-germinated kodo millet showed pitting or pinholes at some points due to the attack of amylases (preferentially on bigger granules). Brabender viscoamylograph studies on small millet starches revealed that the gelatinization temperatures ranged from 75.8 to 84.9 ° C. Barnyard millet possessed lower amylograph viscosity, minimum breakdown, and relative breakdown values when compared to the other small millets. 相似文献
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Effects of timing and rate of N fertilizer application on concentrations of P, K, S, Ca, Mg, Na, Cl, Mn, Fe, Cu and Zn in herbage from perennial ryegrass/white clover pastures were studied at two sites in south-western Victoria, Australia. Nitrogen fertilizer (0, 15, 25, 30, 45 and 60 kg ha–1 ) was applied as urea in mid-April, early May, mid-May, early June and mid-June 1996 to pastures grazed by dairy cows. At Site 1, N fertilizer resulted in a linear increase in P, K, S, Mg and Cl concentrations in herbage and a linear decrease in Ca concentration. For all times of application, concentrations of P, K, Ca, Mg and Cl in herbage increased by 0·0048, 0·08, −0·010, 0·0013 and 0·053 g kg–1 dry matter (DM) per kg N applied respectively. For S concentration, maximum responses occurred in mid-May (0·012 g kg–1 DM per kg N applied). At Site 2, N fertilizer resulted in a linear increase in P, S and Na concentrations in herbage, a linear decrease in Ca concentration and a curvilinear increase in K and Cl concentration. The maximum responses for P, S and K concentrations in herbage occurred for the N application in mid-June and were 0·015, 0·008 and 0·47 g kg–1 DM per kg N applied respectively. For Cl concentration, the maximum response occurred for the N application in early June and was 0·225 g kg–1 DM per kg N applied. Overall, applications of N fertilizer up to 60 kg ha–1 did not alter herbage mineral concentration to levels that might affect pasture growth or animal health. 相似文献
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W. L. Porter 《American Journal of Potato Research》1967,44(10):382-382
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Various parameters,e.g. types of microtiter plate for DAS-ELISA (double antibody sandwich-enzyme-linked immunosorbent assay), use of fresh or frozen amplifier solutions for enzyme-amplified-ELISA, and use of sodium diethyldithiocarbamate (NaDIECA) in sample buffer in cocktail-ELISA were evaluated for the detection of potato viruses A, M, S, X, Y and leafroll from potato foliage. Dynatech Immulon immunoplates provided higher readings for all viruses. Fresh amplifier solution in amplifed-ELISA was superior to frozen solutions. Amplified ELISA gave only marginal improvement in the sensitivity over the standard DAS-ELISA. Addition of NaDIECA in sample buffer did not improve the detection of viruses in DAS-, amplified-, or cocktail-ELISA. Cocktail-ELISA can reduce antigen incubation time to as short as 15 min for PVA, PVM and PVX; 1 hr for PVY and PLRV; and 2–4 hr for PVS using pre-coated plates. Although amplified-ELISA is slightly more sensitive than DAS-ELISA for certain potato viruses, it is not suitable for large-scale indexing of potato viruses in Seed Certification Laboratories, in view of the additional steps needed in carrying out this procedure. 相似文献
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The milling potential of hulled barley, hulled oat, triticale, rye and wheat was studied using a long tempering process and a laboratory four-roller mill. Regardless of the investigated cereal, the results indicated a significant influence (p < 0.05) of volume per surface area ratio on the milling yield and ash contents of the flour. The lowest milling yield was obtained in case of hulled oat. Solvent retention capacity profiles were determined for all investigated whole cereals and flours for predicting the contribution of different polymers to the functionality of samples. For all solvents higher values were obtained for the whole cereals compared to the corresponding flour. Thermo-mechanical properties of the whole cereals and refined flours were also investigated. If in case of wheat the gluten proteins play an essential role on dough behaviour during kneading at 30 °C, in case of triticale, rye, hulled barley and hulled oat, the fibers play a major role as well. Thermo-mechanical properties of starch registered a large variation between cereals and/or flours. The lowest torque value corresponding to starch gelatinization (C3) was registered in case of the hulled oat flour, 1.92 Nm, while the highest value in case of rye flour, 2.65 Nm. 相似文献