品种

Fill a clean, dry and accurately weighed pycnometer with the substance being examined (keep the temperature below 20°C or that specified under individual monograph), fix the thermometer (no air bubble is left in the pycnometer). Place the pycnometer in a water bath maintained at 20°C or the specified temperature, allow to stand in the water bath for several minutes, so as to raise the temperature of the content to 20°C or to the temperature specified in the monograph.

取洁净、干燥并精密称定重量的比重瓶，装满供试品（温度应低于20°C或各品种项下规定的温度）后，装上温度计，置20°C（或各品种项下规定的温度）的水浴中放置若干分钟，使内容物的温度达到20°C（或各品种项下规定的温度），用滤纸除去溢出侧管的液体立即盖上罩。

Common buckwheat ( F. esculentum ) is an allogamy crop, which is heterogony. There is heterogeneity in the species. To reveal the genetic diversity within cultivar population, In order to explore the sampling strategy that can reveal genetic diversity of buckwheat resources on the molecular level. PCR with intron-splice junction primers and long random primers was employed to reveal the genetic diversity within nine common buckwheat varieties and one tartary buckwheat cultivar population among different individuals. We established the sampling strategy in its genetic diversity study. Then we used the established sampling strategy, and the same PCR markers technique,to analysis the genetic diversity of 86 common buckwheat resources, the main results are as follows

甜荞是花柱异长自交不亲和的异花授粉作物，品种内存在一定的异质性，为了准确揭示甜荞遗传资源的遗传多样性，本研究采用因子分析法对86份甜荞遗传资源农艺性状数据进行分析；采用长随机引物和内含子切接点引物的PCR分子标记技术，对9个甜荞品种和1个苦荞品种不同个体间的遗传多样性进行了分析，建立了甜荞资源遗传多样性研究的取样策略；并利用建立的取样策略，采用PCR标记技术，对这86份甜荞资源的遗传多样性进行了分析，取得如下主要结果

Seed industry of large turn, it is big trend to grow industry develop that almightiness turn; The farm crop seed industry turns and can make section taught to grow , the seed produe, sprocess and promote to expand the section the close uniting with the agriculture, becoming the technology lead first the type seed industry group, uniting the developmend meet the next the new species that modern agriculture need when producing , new technique new product of market mechanism term establishing to rise to face to the domestic and international market teach , heavy, push, the integral whole of turns of carry camp mechanism, end guarantee to teach to grow the section can stabilize a ground of growing the high producing, superior quality, many antis of new species, good and new species in distribution in section in seed.

种业的大型化、全能化是国际种业发展的大趋势；农作物种子产业化可以使科研育种、种子生产、加工、经销和农业推广部门紧密联合成科技先导型种子产业集团，联合开发符合市场机制条件下现代农业生产所需要的新品种、新技术、新产品，建立起面向国内外市场的育、繁、推、销一体化的运营机制，最终保证育种科研能稳定地培育出高产、优质、多抗的新品种，种子部门经销优良的新品种。

To reveal the genetic structure and genetic diversity within landraces, 165 individuals from 11 landraces were analyzed.

从54个玉米地方品种中选出11个，每个品种选取15个单株，共165个DNA单株样品，分析玉米地方品种的遗传结构及其品种内的遗传多样性。

The lesion reaction type was recorded as Tan when there is not extensive necrosis around uredia, or RB when there is extensive necrosis around uredia.

鉴定为中抗的品种一般发病晚于感病品种，抗病品种上孢子堆持续产孢的时间也比感病品种短。

Yantai, Shandong pear are the main producing areas, yellow cultivars Magistrate to pear, Qixia great perfume pears, pear Laiyang Chi, Lacey CRYSTAL PEAR and perfume pear; Hebei Province, Baoding, Handan, Shijiazhuang, Xingtai area, the main varieties of pear, Xuehua Li, round Pineapple, lilac pear, red pear; Suizhong Liaoning Province, North Town, Yixian, Jinxi, Fuxin and other landlords fall bai pear production, pears and autumn sub-system, some of the varieties of pears ; Anhui Dangshan and the surrounding area for the pear-producing areas; Shanxi Gaoping for large Pineapple growing areas, the original flat Zeyi Pineapple and Avocado mainly contains species; Gansu Province, Lanzhou in order to produce well-known winter pear fruit; Sichuan, Jinchuan Cangxi Sydney and Sydney ; Xinjiang Korla Pear and Pear, Yantai, Dalian, pears are also famous.

主要梨产区有山东烟台，栽培品种有黄县长把梨、栖霞大香水梨、莱阳茌梨、莱西水晶梨和香水梨；河北省保定、邯郸、石家庄、邢台一带，主要品种为鸭梨、雪花梨、圆黄梨、雪青梨、红梨；辽宁省绥中、北镇、义县、锦西、阜新等地主产秋白梨、鸭梨和秋子梨系统的一些品种；安徽省砀山及周围一带为酥梨产区；山西高平为大黄梨产区，原平则以黄梨和油梨为主载品种；甘肃兰州以出产冬果梨闻名；四川的金川雪梨和苍溪雪梨；新疆的库尔勒香梨和酥梨，烟台、大连的西洋梨也都驰名中外。

Apparently, Twisting Machine with that control system has much limitation. For example, some kinds of fancy yarns areproduced (all kinds of fancy yarns may be produced theoretically) and those kinds must have been saved in the system, to new kinds of fancy yarns, if still uses above-mentioned technique, it must have low efficiency. Therefore, this control system has no advantage of new fancy yarn.

显然，采用这种控制系统的花式捻线机，其可生产的花式纱线品种有限(虽然在理论上它可以生产各种花式纱线)，且该品种必须是系统中已保存有的，对于新的花式纱线品种，若仍采用这种设定、调试的办法，效率低下，不利于开发新的花式纱线品种。

To study the genetic diversity and evolution of four breeds of Fujian domestic ducks, the 667 bp control region of mitochondrial DNA from 32 individual domestic ducks and eight spot-billed ducks were sequenced. The results showed that in the D-loop region of four domestic duck breeds, the content of A, G, C and T nucleotides was 25.5%, 15.2%, 33.5% and 25.8%, respectively.

为了探讨福建省家鸭的遗传多样性和品种进化，本研究测定了福建省4个地方家鸭品种的32个个体和野生斑嘴鸭8个个体的线粒体DNA D-loop区667bp序列，分析了这4个家鸭品种的遗传多态性及品种进化。

Characteristics of nitrogen absorption and response to nitrogen dosage of rice seedlings of 12 rice cultivars selected out through previous field experiments were studied hydroponically.

以大田筛选得到的不同生物学特性的12个水稻品种为材料，研究了水培条件下这些品种苗期的吸N效率差异，结果表明大田N效率不同的品种在苗期水培条件下吸N效率也不相同，并且大田相同类型的品种在苗期N效率也不完全相同。

Hydroponic experiments were performed to study the genotypic differences in toxic effects of oxytetracycline, a kind of tetracycline, on the root of wheat. Results were presented as follows: 1）The significant genotypic differences in responses of wheat to oxytetracycline were found.

为了研究土霉素对小麦毒性效应的品种间差异，收集了63个小麦品种，根据土霉素对小麦种根影响的试验结果，从中筛选出对土霉素耐性相差最大的两个小麦品种，探讨了土霉素对这两个小麦品种叶片叶绿素含量的影响。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。