种性状

Seed-flax variety CI. 2446 was planted at four different dates (Oct. 5, Oct 20, Nov. 5, Nov. 20) and four different densities (2250, 1800, 1350 and 900 plants/m^2) to study the effects on the fiber cell development at different growing stages. All traits, except the phloem thickness, of fiber cell showed no significant difference among different sowing densities.

以种子用亚麻CI2446为材料，分四种植期（10月5日，10月20日、11月5日、11月20日）及四种密度（2250、1800、1350、900株／平方公尺），以探讨其对种子用亚麻在不同生育期间纤维细胞发育之影响，由结果得知播种密度除对靱皮部厚度有显著差异外，对纤维细胞之其他性状影响并不显著。

The main researching contents included as following:relationships betweenspecies diversity,community richness,vegetation succession,soil volume weight,solu-ble Na+concentration and five soil chemical elements(N、P、K、Ca、Mg)concentrationwith grazing intensities in the grassland.Relationships between concentrations,re-serve pools of plant nutrient materials,including five macroelements(N、P、K、Ca、Mg),crude protein,crude fibre,crude fat and total nonstructural carbohydrate,and their allocations in defferent plant parts with grazing intensities in thegrassland.Effects of grazing on Leymus chinensis population were also examined andthat more attentions were paid on the responses of many biological characteristics ofabove-and below-ground plant modules to different grazing intensities.Furthermore,in the respects of plant production,survival rate,tillering ability,total nonstructuralcarbohydrates content and others,the effects of one years different defoliationpatterns on the vitality of Leymus chinensis population were detected.

主要研究内容有：放牧对羊草草地植被和土壤的影响，致力于物种多样性、群落丰富度、植被演替和植物生产量、以及土壤容重、土壤水溶性Na+含量和五种土壤大量营养元素(N、P、K、Ca、Mg)的含量等土壤理化性状与放牧强度关系的分析，分析了不同放牧强度与羊草草地草群和羊草种群地上和地下各植物部分中多种营养物质的浓度、贮量及其分配的关系；放牧对羊草种群的影响，注重了羊草种群的地上与地下各植物器官对不同放牧强度的反应和适应性变化，最后，从植物生产量、存活率、分蘖能力以及总非结构性碳水化合物含量等方面，探讨了不同人为去叶方式组合对羊草种群当年和次年生活力的效应。

Studies on sixteen quality characters and yield were made under Baoding environment of fifteen commercial cultivars from northern wheat-growing areas of China.

在河北保定生态条件下，研究了京、冀、鲁、豫等北方小麦主产省份近年来育成的15个小麦推广品种的16种品质性状和产量表现。

Preliminary genetic analysis demonstrated that the mutant character was recessive contrast to two-row of Pudamai 2, controlled by one pair of recessive genes, and was one variant of row- types.

初步遗传分析表明，该突变性状相对于受体亲本莆大麦2号的二棱为隐性，是穗棱型变异的一种，受一隐性基因prb控制。

The low rate (150 Mg kg/hm~2), the middle rate (300 Mg kg/hm~2) and the high rate (450 Mg kg/hm~2) were experimented to study the yield and qualities formation and growth of flue-cured tobacco under different magnesium fertilizer application.

2005年在湖南常宁市大田栽培条件下，以云烟87为供试验烤烟材料，采用漂浮育苗移栽，进行3次重复的随机区组试验，研究了在低镁水平(150kg/hm~2)、中镁水平(300kg/hm~2)和高镁水平(150kg/hm~2)三种不同施镁水平下，烤烟的生长发育、烤烟光合强度、蒸腾强度、烟株Mg~(2+)及干物质积累动态、产量、烟叶品质、经济性状和经济效益等烤烟生长发育的生理化学指标。

In studies of interaction among pile, platform that above it and surrounding soil, this paper employ the concept of plate element to simulate the loading character of platform, and employ the concept of solid element to simulate the character of pile and soil, using the finite element method after understanding the geometry properties of pile, soil and the platform. Analyzing the loading properties of the three entities above and their deformation, this paper also employ a special element, Penalty Element. The introduction of penalty element of this kind has served to guarantee the join harmony of displacement between solid element and plate element, thereby effectively resolving the join problem between platforms, pile that support it and surrounding soil.Considering significant property difference between pile material and its surrounding soil, there may be much shear stress on their contact interface produced under vertical load, thus causing displacement or fission. Therefore it is necessary to adopt one special constitutive law of this kind of contact interface, which can reflect its feature of loading and deformation thoroughly. On the basis of the deformation feature and constitutive laws of some contact interface obtained by Zhang Dongji and people concerned through some single-shear experiments on contact interface between structure and soil, this paper employ one pile-soil three-dimensional constant thickness contact interface model to simulate the " slide" taken place on the interface between pile and its surrounding soil. With this kind model, this paper has also created one finite element model, which can be applied to perform finite element calculation and analyze the pile-loading feature, and deduced its element stiffness matrix.

在承台-桩-土共同作用中，考虑桩与承台的几何特性，采用有限元方法，用实体单元模拟桩土，用板单元模拟承台，更具体地分析桩和承台的受力特性和变形，而且还采用罚单元—既实体单元与板单元之间连接必须满足变形协调条件，来有效地解决了承台与桩土的连接问题，且在桩土共同作用中，由于桩体结构的材料性能与周围土层性质相差较大，在竖向荷载下有可能在其接触面上产生较大的剪应力从而导致错动或开裂，因此，为了充分反映桩土接触面上的受力及变形特征，应采用一种桩土接触面特有的本构关系，即利用张冬霁等人关于结构与土体接触面单剪试验所得到的接触面变形特征及其本构关系，引入桩-土三维等厚度接触单元来模拟桩与桩侧土之间的&滑移&，在此基础上建立可用于桩基承载性状分析的有限元计算单元模型，并推导出了各单元的刚度矩阵。

In a word, most agronomic traits of Zhonghuang13 had insensitivity and stability to photoperiod, and Zhonghuang13 was extensive photoperiod adaptability soybean which could be planted at the area of multi-ecotype.To make photoperiod especially importance of long-day for growth and development of short-day crops clear, In the current study, a photoperiod-sensitive and late maturity determinate soybean cv.

总的来说，中黄13相对于中黄24和凤交66-12在多数的农艺性状上表现出一定的稳定性，对光周期反应相对钝感，进一步证实了中黄13是一种感光性相对弱的钝感型品种，可适应多种生态类型的地区种植。

A total of 29 QTLs for flag leaf and grain shape were detected on 12 chromosomes except chromosome 2 and chromosome 11, and 6 QTLs were detected in two different growing environments and the contribution of these QTLs are more than 10%.

共检测到控制上述性状29个QTL，分布于除第2和第11染色体以外的其它所有染色体，其中6个QTL在两种环境中同时被检测到且贡献率大于10%。

In a breeding system of commercial Imitative Local Broiler, using the Jiang-13 strains of white Plymouth Rock and Guangdong Local breed crossed with each other to produce a hybrid with rapid growth, high flavour of meat and buff feather similar to the local breed of Guangdong, the Jiang-13 strain must be of recessive white feather and, also,under the coucealment of recessive white feather, its most ideal genotype will be ees~+s~.

为了利用江-13白洛克品种鸡的优良肉用性状，用以和优质地方黄羽鸡种构成优质高产的肉鸡繁育体系——广源鸡繁育体系，使商品肉鸡具有与广东地方鸡羽色相似的浅黄羽色，参加杂交的江-13白洛克鸡必须是隐性白羽，而且基因型为iiccOObbeess最为理想。

The difference of soil water and nutrition in different top dressing treatments are the main reason to result in the difference of soil environment.

两种追肥方式的土壤水分、养分分布差异，影响到作物对水分和养分的吸收，是造成上述土壤性状改变的主要原因。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。