With their patience and efforts, they successfully developed a combination of artificial breeding and natural reproduction.

Research on artificial insemination and semen freezing and artificial hatching and starting in Grus vipio will promote the reproduction of the crane under artificial breeding.

对白枕鹤类的人工授精、孵化、育雏以及冷冻精液技术的研究，可促进人工饲养条件下鹤类的增殖和种群的繁衍。

The results showed that main factors were artificial breeding skill, cost, ration and feeding skill, labor difficulty, live beef market, butcher skill, etc.

调查结果表明，主要的影响因素有：人工授精技术、推广经费问题、饲料与饲养管理技术、肉牛销售与市场、肉牛屠宰加工技术等等。

So the author went deep into the Ningde Pseudosciaena crocea breeding area, nursery room, and a part of the leading enterprises to observe and research.

对此，笔者先后多次到宁德大黄鱼养殖区、育苗室进行现场观察与调研，并对我市部分龙头企业进行走访。

In hairy clam breeding area the high nitrate-reducing bacteria in sediment is detected, shows that the sediment has high levels of nitrate.

毛蚶养殖区底泥中检测到了过高的硝酸盐还原菌，说明了说明贝类养殖环境中硝酸盐的浓度较高。

The reasons are as the following: ( 1) flood creates the breeding area for the Oriental migratory locust outbreak;

其主要原因为：（1）水灾是为东亚飞蝗创造发生地和转移到临近地区危害的关键因子；

Since the human activities, many living and breeding area were damaged and led to patch or fragile environment and the decreasing of the population size.

人类活动使种群的栖息地斑块化，进而使其成为脆弱生境，导致种群数量减少。

The Naoli River Watershed is an important breeding area for rare and endangered Oriental White Stork.

挠力河流域是濒危水禽东方白鹳主要繁殖区域。

Prevention and treatment: spray in space; eliminate pests in breeding area; larva prevention and treatment.

防治：空间弥漫喷洒，孳生地处理，幼虫防治。

At least two breeding herds should be maintained at each P è re David's deer breeding base, we should isolate these deer with close relationship when establish breeding herds;

每个麋鹿繁育基地应建立两个以上的繁殖群，组成繁殖群时，应隔离亲缘关系近的繁殖公鹿和雌鹿；

How to choose and stimulate teachers is important and difficult, measures of governing universities include combining tryout with tenure, avoiding" close breeding", anonymous evaluation and so on.

教师的选择和激励是高校组织治理的重点和难点，试用期与终身教职相结合、避免近亲繁殖以及匿名评审等等，是当前高校组织治理的重要举措。

Self-incompatibility, a common biological phenomenon in angiosperm, is an important protective mechanism of preventing close breeding and species retrogression that formed during long period evolution.

自交不亲和性是被子植物中常见的一种生物学现象，是植物在长期进化过程中形成的防止近亲繁殖和物种退化的一种保护机制。

The phenomenon of close breeding is prevailing in introduced talents in China western colleges.

在西部高校人才引进中，普遍存在近亲繁殖现象。

When proportion of breeding flock size is fixed, the population size enlarge every 5000, breeding profit and genetic gain will roughly increase 7.21% and 6.60% respectively, and breeding cost will decrease 22.97%.

在育种群规模比例固定的情况下，群体规模每扩大5000只，育种效益平均增加7.21%，遗传进展平均增加6.60%。

But only enlarge population size, it will decrease breeding efficiency and population multiple breeding gain, we should enlarge breeding flock size and active breeding flock proportion in practice. 5.

育种投入平均减少22.97%，但单一加大群体规模，随着留种公羊数的增加，将降低育种效益和综合遗传进展，在育种实践中应尽量扩大育种群规模和主动育种群比例。

Conclusion: Getting rid of alabastrums in breeding season we will gain hige-grade and high-yield medicinal herb.

结论：生育期内除去花蕾，才能获得优质高产药材。

Strict and blocked production management system is modernization swine breeding companies gain benefits'basis, the display of well management and actual capacity is the key of win the market. They couple get a spacious prospect to TV monitor in the usage of the modernization swine breeding companies.

严格封闭的生产管理体系是现代化养猪企业获得效益的基础，良好的企业管理及实力展示又是赢得市场的关键，二者结合使用电视监控在现代化养猪企业中的应用具有广阔的前景。

Excellent clones are selected for Beijing, through the economical weights analysis and index selection of industrial timber properties such as volume increment, timber total density, fiber length and stem straightness. The comprehensive breeding gain of industrial timber can be higher than 20%.

经过材积生长量、木材全年密度、纤维长度、主干通直度性状经济权重分析和指数选择，为北京点选出8个优良无性系，平均综合育种增益达20%以上。

The population multiple breeding gain, and breeding profit will reach to 18.631 Yuan RMB and 375.569 Yuan RMB respectively, it will increase 36.83% and 153.41% respectively compared with current breeding scheme of 13.616 Yuan RMB and 148.208 Yuan RMB. 6.

达到最优状态时超细型细毛羊群体综合育种进展和育种效益可达到每母羊每年18.631元和375.569元，比现行育种方案的13.616元和148.208元分别提高了36.83%和153.41%。

The mean generation interval of the population is 4.176 years and the total breeding gain is 63.198 Yuan.

平均世代间隔为4.176年。

Assessment of Waste Pollution Risk of Livestock and Poultry Breeding Industry in Fujian

福建省畜禽养殖业废弃物污染风险评估