繁殖

The Great Bustard has abundant time to breed, its breeding season last from first April to the middle ten days of July, once a year, but it maybe build nest to lay again when the first nest was destroied.

大鸨的繁殖期持续时间较长，从每年的4月初开始到7月中旬结束，每年繁殖一次，但第一巢破坏后，有二次建巢补卵的可能。

We studied reproductive traits of this species such as phenology of capitulum, ratio of pollen to ovule, self-compatibility, pollen viability, visiting insects and germination potential of seed by experimental observation and bagging treatment in order to assess the association of these reproductive traits with invasiveness.

通过实验观察和人工控制套袋等方法，对其花序开花动态、花粉胚珠比、自交亲和性、花粉活力、访花昆虫和种子的萌发率等与繁殖相关的特征进行了研究，探讨了这些繁殖特征与入侵性的关系。

In this thesis, the breeding system and reproductive strategies of the three species were observed and analysed. The adaptation and evolution of the genus Ligularia under the condition of psychro-environment were discussed.The result showed that the flowering and fruiting periods of the three species were from mid-June to the beginning of October, and their inflorescences were racemose arrangement with capitulum.

本研究全面观察分析青藏高原东缘分布的箭叶橐吾、黄帚橐吾和掌叶橐吾的繁育系统；研究箭叶橐吾和黄帚橐吾各自居群中有性生殖和克隆繁殖的权衡关系，分析克隆繁殖与生态适应，探讨橐吾属植物对高寒环境胁迫条件下的适应与进化。

He called the agent a Contagium vivum fluidum, a living germ that soluble, He postulated that the agent must incorporated into the living protoplasm of the cell in order to reproduce, and that its reproduction must be brought about with the reproduce.

他把病原体称为传染性病毒液体，一种可溶性活菌。他推断病原体必须依赖细胞的原生质成分以便其繁殖，并且它的再生必须是由繁殖来完成的。

Studies were made on the vegetative propagation coefficient and cormel's biological characters using eighth-excision in different development phase of Lycoris radiate.

在红花石蒜不同生长发育期进行八分法切割繁殖，研究无性繁殖系数和子球生物学性状差异性。

Earthworms grow and reproduce in the best state in the content of composted cowmanure in 60%~70%, compared the growth and reproduction of earthworms in differentcombination of composted cow manure, composted and uncomposted cornstalk.

通过对比蚯蚓在发酵牛粪、发酵玉米秸秆和未发酵玉米秸秆不同组合中的生长和繁殖状况，发酵牛粪含量在60%～70%的时候蚯蚓的生长和繁殖最好。

Cuttage is widely used for large-scale propagation nowadays.

扦插繁殖法仍是今天应用最广泛的大规模繁殖红豆杉的方法。

Two main methods of tree roses root-stocks' propagation are discussed: tissue culture and cuttage.

该文进一步概述了目前繁殖树月季砧木的两种主要方法，即组织培养和扦插繁殖的方法。

In the past 2 years, experiment has been made on its cuttage breeding , and the survival rate of cuttage reached 72%.

为弥补其有性繁殖种子来源的不足，近2年来进行扦插繁殖试验，其扦插成活率可达72％。

Commonly used cuttage, engraft and layering are progenitive, also can sow.

繁殖 常用扦插。嫁接和压条繁殖，也可播种。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。