杂交稻不同时期喷施微量元素叶肥“稻多收”增产效果研究

“稻多收”是一种新型水稻专用叶肥，含多种微量元素，本文报道“稻多收”的施用方法、增产效果及原因，结果表明叶面喷施“稻多收”能使杂交稻增产16％～20％，每亩净增收入90．00～100．00元，是微量元素科学服务于农业生产的一个重要方面，从而为杂交稻栽培提供了一条经济有效的增产途径。     

微肥“稻多收”1995年滁州市应用试验报告

示范了１３３３０×６６７ｍ２施用微肥“稻多收”增产效果，平均每６６７ｍ２增产稻谷７０ｋｇ，共增产稻谷９３３０００ｋｇ，扣除每６６７ｍ２农业成本１２元．净增效益２１１．６８万元．还取得了科教工作者直接投身于经济建设的几点经验体会。     

化学杀雄配制水稻杂种

水稻是雌雄同花,自花授粉的作物。为了获得大量的杂交种子,首先要设法诱导作物母本的水稻产生“雄性不育”——即花粉失去生殖能力,然后以作为父本的另一种水稻的花粉传授给母本,即可获得杂交种子供生产上应用。目前使用的方法有:“三系”法、“两系”法和“化学杀雄”法。在水稻生长发育的某个阶段,用一定浓度和一定数量的某种化学药物喷在稻株上诱导产生“雄性不育”,以便配制出大量的杂交种子,这就称为化学杀雄配制水稻杂种的方法(简称“化杀”法)。“三系”法和     

核酸降解产物在农业上的应用

在毛主席无产阶级革命路线的指引下,广大的科研人员进行开门办科研,支援农业,走与工农兵相结合的道路,和广大工农兵群众一起,在三大革命运动中,努力学习马列主义和毛主席著作,以实践第一的观点,发扬敢想敢干的革命精神,广泛开展了核酸降解产物(又称“702”)在农业上应用的科学实验活动,取得了可喜的成绩。实践说明,水稻插秧前1—3天在秧田喷施“702”可以促进稻苗根系发达,插秧后活棵返青快,促进早发增蘖,得到增穗增产的效果。这些喷施过“702”的秧苗在机械插秧时,即使秧根受到一些损伤,还同样     

产酸克雷伯氏菌SG-11生物合成吲哚-3-乙酸的检测

产酸克雷伯氏菌SG-11是从水稻根面分离的植物根际促生细菌,能有效的促进水稻植物的生长和发育,为探索其促生机理,通过色谱 -质谱联用、薄层色谱与高效液相色谱的定性和定量分析,证明了在产酸克雷伯氏菌SG-11的代谢产物中存在着较高浓度的植物生长素吲哚 -3-乙酸。     

新农用抗菌素——庆丰霉素效价光电比色测定法的研究

稻瘟病是目前水稻生产中出现的一种较多见病害。受害水稻,严重减产,每亩损失稻谷一、二百斤不等。在毛主席革命路线指引下,在批林批孔运动推动下,上海植物生理研究所农用抗菌素组和上海郊县及其他省市有关单位,以毛主席光辉哲学思想为武器,研究出一种生产简易、发酵单位较高的低毒高效的新农用抗菌素——庆丰霉素。三年多来的室内测定和田间试验表明,对防治水稻苗瘟、叶瘟、穗颈瘟等都有良好效果,对水稻白叶枯病、水稻纹枯病、白菜软腐病等的防治方面经初步试验也有较好的苗头。     

光周期敏感不育水稻中激素的二阶导数卷积伏安法研究

二阶导数卷积伏安法应用于水稻中痛量雌雄激素的检测，具有快速，灵敏，干扰少的特点。本文以光周期敏感核不育水稻农垦５８Ｓ为材料，以农垦５８作对照，了叶焉和穗中雌，雄性激素的含量，研究了不同光周期条件下两类激素的变化。     

《分析化学》第十二卷(1—12期)总目录

研报究告理、1户‘1矛、少、﹄了、‘产、、产、.产、.产‘、了、、产1 4 10 14 1721器29 8184了,气了吸、了r、/‘、了‘、了厅‘、了‘、了f、、了t、了L、1 1 1 1 1 1 1 1 22(89)2(93)2(98)2(105)(110)(115)(161)(165)(169)(174)(179)(183)(186)(190),2 2 3 3 3 3 3 334(241)、.J了、,产、J声旗、.产、,矛、、产﹄、户、,产、.产、.产、几声、月声、J夕、,2、.才了‘、了.、采用二次阶跃电位浸蚀电流法浏定不锈钢中卜铁素体······”·“·······“··””·“·····“·“·“···“一马翔关于A BT概念的讨论”·…     

含肟酯基L-香芹酮衍生物的设计、合成、晶体结构及杀菌活性

L-香芹酮是一种具有杀菌活性的天然产物,可用作新型杀菌剂的先导化合物.因此,以L-香芹酮为先导化合物,采用活性亚结构拼接法合成了一系列含肟酯的L-香芹酮衍生物.化合物的结构经过红外,1H NMR,13C NMR和高分辨质谱确认.本研究还测定了这些化合物对油菜菌核真菌、小麦赤霉真菌、水稻稻瘟真菌、西瓜枯萎真菌和水稻纹枯真...     

产酸克雷伯氏菌SG—11生物合成了吲哚—3—乙酸的检测

产酸克雷伯氏菌ＳＧ－１１是从水稻根面分离的植物根际促生细菌能有效的促进水稻植物的生长和发育,为探索其促生机理,通过色谱－质谱联用。薄层色与高效液相色谱的定 和定量分析。证明了在产酸克雷伯氏菌在ＳＧ－１１的代 物中存在着较高深度的植物生长素吲哚－３－乙酸。     

Dichroism of absorption and polarization of phosphorescence of molecules of the closed form of nitrobenzospirothiopyran

The spectral-polarization characteristics of absorption and phosphorescence of molecules of the initial form of nitro-substituted indolinospirobenzothiopyran were studied in oriented polyethylene films and in solutions with different polarity. An oscillator model of the electron transitions responsible for the formation of absorption and luminescence spectra was suggested. It was established that the principal differences in the spectral and photophysical properties of the compound studied and its oxygen-containing analog are associated with the fact that the electronegativity of the S atom is lower than that of the O atom. Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1143–1146, June, 1997.     

Determination of heats of detonation and influence of components of composite explosives on heats of detonation of high explosives

The heats of detonation of 20 simple high explosives and explosive mixtures were determined by means of an adiabatic detonation calorimeter designed by the authors. The results indicated that the performance of the instrument was reliable and the experimental data were very accurate. For explosive mixtures, there was a linear accumulative relationship between the heats of detonation of the explosive mixture and its components. Accordingly, the heats of detonation of explosive mixtures could be calculated directly from the heats of detonation of simple explosives and the characteristic heats of other components. The experiments showed that the gold or brass shell of the cylindrical charge could be substituted by a thick-walled porcelain shell, which had the advantage of cheapness.

     

Summary of development of the theory of stability of colloids and thin films

In this review, the research of the author in the field of colloidal systems is summarized. The factors influencing colloidal stability are systematized and analyzed. Examples are presented to illustrate the practical utilization of the theory of stability of colloids and thin films.This review was prepared on the basis of the works of the author, which were awarded the State Premium for 1991 in the field of science and technology, chemistry section.Institute of Physical Chemistry, Russian Academy of Sciences, 117915 Moscow. Translated from Izvestiya Akademii Nauk, Seriya Khimicheskaya, No. 8, pp. 1708–1717, August, 1992.     

Synthesis of phenolic components of Grains of Paradise

Two vanilloids, (5E)-8-(4-hydroxy-3-methoxyphenyl)oct-5-en-4-one (1) and 4-[3-hydroxydecyl]-2-methoxyphenol (2), isolated from the dried seeds of Grains of Paradise (Aframomum melegueta), were synthesized; the latter compound was made as the S-enantiomer and the material derived from the seeds was found to be a 1:1.7 mixture of the R and S isomers. The synthetic route used should allow the preparation of analogs having extended alkyl chains and consequently different lipophilicity, and 3, a homolog of 2, was also prepared.     

非那雄胺合成工艺改进

非那雄胺能抑制5α-还原酶的活性,明显降低二氢睾酮水平,是一种治疗良性前列腺增生的有效药品。该合成工艺以甾烯酮酸为原料,将其与氯化亚砜反应,无须分离即与叔丁胺反应得17β-酰胺化合物,再氧化开环,环合,氢化,脱氢合成了非那雄胺。经元素分析、IR、1HNMR、13CNMR、MS分析表征了其结构。该法无须使用昂贵的2,2-二吡啶二硫化物和剧毒药品苯亚硒酸酐,且以乙酸铵代替氨气,降低了对设备的要求和腐蚀,更适用于工业生产。     

氯氧化镁生成热的研究

用氧化镁氯化镁水溶液制备了8水合氯氧化镁[nMg(OH)2·MgCl2·8H2O], 并测定了其在盐酸中的溶解热, 实验结果表明, 氯氧化镁溶解热与n值呈线性关系, 根据溶解热求出5Mg(OH)2·MgCl2·8H2O和3Mg(OH)2·MgCl2·8H2O的生成热分别为-7727.1和5888.1kJ·mol^1^-。     

Thermodynamics of the formation of oxosulfides of rare-earth elements

The enthalpies of solution of several oxosulfides of rare-earth elements and the high-temperature enthalpies of oxosulfides and oxosulfates of lanthanum and yttrium were measured using solution calorimetry and high-temperature microcalorimetry techniques. Standard enthalpies of formation and some thermodynamic properties of oxosulfides and oxosulfates were calculated. Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 2 pp. 294–297, February, 1997.     

Features of the mechanism of oxidative dehydrodimerization of propynol

Analysis of kinetic regularities for the propynol oxidative coupling under the action of cupric salts in pyridine and in the presence of a buffer is undertaken. The reaction mechanism, including the formation of Cu(I) acetylides, is considered.     

解决能源问题的新途径--光解水制氢的研究

面对日益枯竭的能源危机,氢能是一种洁净、最有前景的替代能源。目前在各种制氢的方法中光催化分解水制氢的研究最多,光解水过程中催化剂最关键,本文对利用太阳能光解水的途径、提高光催化反应效率以及光催化剂的开发研究进行了综述。     

Investigation of Kinetics of Solid-Phase Synthesis of Lithium Orthosilicate

The kinetics of the interaction between lithium carbonate and silica with various degrees of dispersion was investigated by TG and DTA methods. It was found that the utilization of pyrogenic silica with a specific surface area of about 300 m²g^-1 instead of aerosil with one of 175 m²g^-1 leads to an increase of the reaction rate between lithium carbonate and silica, which depends on the formation and growth of lithium orthosilicate crystals in the first stage, and is conditioned by the diffusion of lithium and oxygen ions through the lithium orthosilicate layer formed at temperatures above 800 K. This supposition is supported by the kinetic analysis results obtained with the use of the different models. The optimal regime of heating is recommended. This revised version was published online in July 2006 with corrections to the Cover Date.