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This paper discusses the yield function, loading unloading criterion and constitutive equation of Lagrangian finite deformation elastic-plasticity theory. Finally, Lagrangian finite elastic plasticity theory is used on constitutive models of elastic-plasticity at infinitesimal strain, and the complete constitutive relation for singular yield surface theory is obtained.

本文讨论了Lagrange型有限变形弹塑性本构理论的屈服函数、加卸载准则、本构方程等，最终将Lagrange型有限变形弹塑性本构理论应用于小变形情况下的奇异屈服面弹塑性模型，得出了完整的Lagrange型有限变形弹塑性本构理论。

So the depth(20-40cm)of fertilizer application could be as best depthfor delaying the senescence of flag leaf and root system and gainning highyield and high efficiency in dry land wheat.5 The effects of deep cultivation-root cutting on the senescence after an-thesis and yield had been studied in dry land wheat of high yield.the best ef-fect obtained from treatments by deep cultivation-root cutting in beforewinter stage,next by the treatment in the starter stage treatment and in con-trol,lastly by the treatment in the before winter stage and starer stage.

由此认为延迟旱地小麦根系与旗叶衰老并获得高产的施肥深度应在20-40cm左右。5深耘断根对旱地高产小麦花后衰老及产量的影响进行了研究，以冬前深耘断根最好，起身期深耘断根与对照次之，冬前和起身期都深耘断根效果最差。

Result The pod yield of 9686-8 was highest, being 4 363.5 kg/hm^2; that of Kaibai 2 was secondary, being 4 282.5 kg/hm^2; both of them were increased by 13.2% and 7.8% resp. in comparison with that of CK. The pod yield of Yuzi 1 was lowest, being 3 715.5 kg/hm^2.YS03-1-1 was susceptible to virus disease, moderately resistant to leaf spot and resistant to stem rot.

结果］9686-8的荚果产量最高，为4 363.5 kg/hm^2，其次是开白二号，其荚果产量为4 282.5 kg/hm^2，分别比对照增产13.2%和7.8%；豫紫一号的荚果产量最低，为3 715.5 kg/hm^2。

In order to understand nitrogen accumulation and distribution in sweet maize variety with high fresh ear and kernel yield, explain the genotypic differences of N accumulation and distribution at different growth-phases and their effects on yield formation and N utilization efficiency, 22 sweet maize (Zea mays L . saccharata Sturt ) varieties released in recent years in China were planted and their N accumulation and distribution amount at jointing stage, silking stage and fresh stage under the same nitrogen level were studied.

为了解甜玉米高产品种氮素积累和分配的规律，阐明不同生育阶段氮素积累和分配的基因型差异，及其对产量形成及氮素利用效率的作用，分析了22个甜玉米品种在同一施氮水平下拔节期、开花期和鲜食期的植株氮素积累量和分配量。

The N fertilizer application under PVC subdrainage suggested that theamount of N fertilizer applied and ratio of bascal fertilizer to topdressing had con-siderable influence on accumulation and distribution of dry matter yield,uptakeand distribution of mineral nutrients such as N.P.K as well as grain yield.

塑料暗管排降条件下长江下游圩区小麦氮肥运筹试验结果表明，氮肥用量及基肥与追肥比例对小麦干物质积累和分配，矿质营养元素吸收和分配，籽粒产量有显著有影响。

PVC subdrainage is one kind of advanced drainage techniques developed inrecent years in the world.It will have a promising future of wide application incontrolling the threat of waterlogging,reclamating the lower—yield lands and re-constructing the lands with higher and stable crop yield in the lower reach polderareas along Changjiang River.

塑料暗管排水是世界上新近发展起来的一项高科技排水技术，对防止长江下游圩区三麦渍害，改造中低产田，建设高产稳产农田具有广阔的应用发展前景。

The results show that the yield of compound 5 reached a maximum of 65% under the optimum reaction conditions, where the pH of the reaction medium was 3.8~4.0, the reaction temperature was 85~90 ℃, and the molar ratio of zinc powder to compound 1 was 2.6:1. The optimum oxidant for the selective oxidation of α-methyl on compound 5 was sulfuryl chloride, and the yield of the product was 52.5%.

结果表明，合成化合物5的最佳反应条件为：反应介质pH值为3.8~4.0，反应温度85~90℃，锌粉与反应物1之间的摩尔比2.6：1，产物收率达到65%；化合物5中α-甲基选择性氧化反应的最佳氧化剂为硫酰氯，产物收率达到52.5%。

The one time yield of potassium sulphate can reach 85.26% and the total yield approaches 100%.

实验结果为：硫酸钾的单次收率达到85.26%，循环总收率接近100%。

In addition, the study also indicates that there are differences in increasing grain yield and improving yield characteristics of the two cultivars among the different sulphureous fertilizer application.

比较硫肥不同处理对两种小麦品种光合生理特性及产量的调控作用以及投入成本来看，在目前高产田养分供应条件下，两品种均以基施S120 kg/hm2效果相对较优。

The correlation between yield and canopy structure indices was the closest during the middle stage of fruiting, then during the latter stage of fruiting, and was the smallest during the seedling stage. It was beneficial to yield formation of summer squash to retain stable and higher canopy height, bigger LAI and lower leaf area density.

产量与结果中期的冠层结构指标相关性最大，其次是结果后期，与苗期相关性最小，结果期维持较高较稳的冠层高度、叶面积指数(leaf area index ，LAI)，较低的叶面积密度，有利于西葫芦产量的形成。

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。