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The leaf WUE of millet was increased when root cutting in seedling stage,and only the treatment of I2D of maize increased the leaf WUE; The biomass WUE of millet and maize were increased excepting the root cutting treatments of "TM" and "sl"; At the 80% field capacity, when the root was cutted more seriously and more later,the seed yield WUE of millet were dropped; While at the 50% field capacity, the seed yield WUE of millet was increased when the root cutting is moderate in prophase,and have no reduction of output or increase the production at the same time ,while the benefit of saving water didnt evidently at the later stage root cutting.

苗期伤根处理能够提高谷子叶片WUE，而玉米伤根后仅I2D处理的单叶WUE高于对照；除TM和sl处理外，伤根处理提高了谷子和玉米生物量WUE；在土壤含水量为80%田间持水量时，随着伤根程度的加剧和伤根时间的后移，谷子子粒产量WUE下降，伤根不利于谷子WUE的提高；而在50%田间持水量时，前期伤根量适度的处理在不减产甚至增产的情况下还有助于作物子粒产量WUE的提高，而后期伤根的节水效果并不明显。

The most significant variance lay in the 1000-seed-weight,followed by flag leaf length and inflorescence shape and then by distance between flag leaf and inflorescence with least in inflorescence length,plant form,leaf width and seed length.Meanwhile,morphological characteristics of D.glomerata have significant relationships: those with upright and constrictive inflorescences hav...

其中，种子千粒重变异最大；旗叶长度、花序形状次之；穗叶距、花药宽度、旗叶宽度等性状变异中等；而花序长度、株型、叶宽、种子长度变异最小。2鸭茅植物形态学特征间存在明显相关性，花序直立、紧缩的鸭茅，叶片窄长，茎秆粗壮，旗叶较长，雄性生殖器官发育良好，结种性能强；而花序下垂、开展的鸭茅则与之相反。3聚类分析表明，不同野生鸭茅种源可划分为3类，其中花序下垂种源聚于一类；而花序直立的种源分居另两类。4从形态学特征及相关农艺性状分析，花序直立的鸭茅更具开发利用潜力。

In order to research threshing seed-corn identity and damage mechanism, improve threshing principle, reduce damage and enhance efficiency, the threshing experiments for Longdi-401 seed-corn were carried out by using the LDS microcomputer control and electron draw press test machine, to investigate the effects of variety , moisture condition, force position and restriction property.

摘 要：为深入研究种子玉米脱粒特性和脱粒损伤机理，改进玉米脱粒机，降低脱粒损伤，提高脱粒效率，以隆迪401玉米种子为对象，应用LDS微机控制电子拉压试验机等进行了脱粒试验，研究了玉米种子品种、含水率、作用部位及不同约束性质下的种子玉米脱粒力学特性。

The testing result shows that there is a difference actual seed dropping angle and the one acquired by calculation, therefore, a formula for the calculation of seed dropping angle even closely suited to production practice has been driven out and a theoretical basis for the application of 2BQM-2 model plastic film mulch pneumatic precision planter in practical production is advanced in this paper.

通过试验结果分析，找出种子的实际的落种角度和计算的落种角度之间的差别，推导出更适合实际生产中所需要的落种角度，为2BQM-2型气吸式精量铺膜播种机在实际生产中的应用提供了一定的理论基础。

With KEN NONG-4 as experimental material, the text studys that Chemical control seed coating and general seed coating impacts upon lateral root anlage Initiating of soybean seeding, meanwhile analyzes dynamic changes of plant endogenous hormone contents in the course of lateral root anlage Initiating by experiment of vertical plank germination.

以垦农4号为试验材料，利用垂直板发芽试验研究了化控种衣剂和常规种衣剂对大豆幼苗侧根原基发生的影响，并对侧根原基发生过程中植物内源激素含量的动态变化进行了相应的分析。

After having the pigeon out there for 10 minutes or so, I went out with the video camera and a handful of pet cockatiel seed mix(lots of different kind of seeds in the mix). I kept sslloowwlly going toward him, and put the handful of seed on the driveway.

大约十来分钟后，我拿着录像机，抓了一把宠物鸟混合食，很慢很慢地朝鸽子走去，将食物撒在路上。

SEED CRACKUP The cardinal's strong beak is one of the best seed crackers around.

红雀有一个最好用的剥开种子的强壮鸟喙。

Because manual seed points are not exactly located on the crack features, two methods are proposed to search the geometric crack features, such as crotches. Wavelet transformation, clumpping, thinning and crossing algorithm are processed sequentialy to reach the semi-automatic feature extraciton purpose. Depending on these seed points, crack tracks and edges are determined by the method in this paper. Local image registration is utilized to raise relative accuracy and acquire the expansion of concrete cracks.

由於人工种子点并非准确落在特徵点，因此在种子点座落区域取目标视窗，使用基底函数转换边界侦测、区域增长消除杂讯区块、裂缝区块骨骼细化，接著寻找裂缝交叉点及端点，准确寻找出种子点应座落的位置，以此位置匹配后时期裂缝影像种子点，续以侦测前后时期裂缝边界，利用局部套合求得高相对精度，求得裂缝成长的情况。

The seed embryoes were penetrated by 〓 ion beams of 75 MeV/u and the seed endosperms were implanted by the proper degraded 〓 ions, and soluble protein of the seedling in M1 generation was divided into 5 sections to analyze their changes at different molecular weight. 1 In comparison with control, the relative content of the second section (molecular weight is heavier in all sections) of all irradiated materials got down, while the relative content of the fifth section (molecular weight is the lightest) of those went up. 2 The penetrating seeds made the relative content of the first section (molecular weight is the heaviest) and the third section (mid-molecular weight) drop, while the fourth section went up. Moreover, the changes of the third section and the fourth section of the penetrated materials were clearly different from those of the implanted materials. 3 The difference between implanted embryo and implanted endosperm existed in deeper dropping of the first section and higher rising of the fifth section on relative content of soluble protein of the latter. 4 On irradiated materials at lower doses, there were exceptional changes of soluble protein, it may be thought that there was excited effect of low dose.

1.75MeV／u 〓O〓离子经过适当降能后注入小麦种子的不同部位和贯穿整个种子，对其M1代幼苗的可溶性蛋白质组分以及电泳中不同区段蛋白质组分相对含量加以分析，结果表明：1）同对照相比，随着辐照剂量的增加，所有辐照材料第二区段蛋白质组分的相对含量下降；而第五区段蛋白质组分的相对含量升高。2）种子的贯穿处理，同时也引起第一区段和第三区段蛋白质组分相对含量的下降以及第四区段的升高；其中第三、四区段的变化明显区别于注入效应。3）注入胚和胚乳的区别在于后者第一区段蛋白质组分相对含量的较大下降和第五区段的较大提高。4）小剂量辐照的材料，可溶性蛋白质组分的变化异常，可能与低剂量辐射兴奋效应有关。

The correlation was attributed to the three types of plants:(1) the ephemerals plants;(2) the plants that had the transient soil seed bank or the aerial seed bank;(3) the plants of mainly vegetative propagation.

土壤种子库特征以及与地上植被的关系主要受以下几种植物的影响。1。短命植物；2。仅形成短暂种子库或是大部分时间形成空中种子库或土壤外种子库的植物；3。种子繁殖能力弱而营养繁殖能力很强的植物。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐