species selection

The interplanting of grass strip-a new tillage method of water and soil conservation and its effect on water and soil erosion control, as well as planting methods and grass species selection were introduced in the paper. The developing tendency of this method was also discussed.

介绍了水土保持耕作法&草带间作，以及它在控制水土流失方面的作用，草带种植的几种方式，草带草种的选择等，并对这种治理坡耕地措施的发展趋势进行了展望。

Study on species selection and allocation in regeneration of farmland shelterbelt

农田防护林更新树种选择及配置模式研究

preliminary report on tree species selection for cultivation of lentinus edodes

优良菇木树种选择试验初报

A theory of organic evolution claiming that new species arise and are perpetuated by natural selection.

主张新品种在自然中物竞天择的有机进化论。

Research of coniferous plant species selection for sand binding afforestation on Mu Us sandy land

毛乌素沙地固沙造林针叶树种选择的研究

Species Selection for Bamboo Base Construction of Jinping County

金平县竹子基地建设中的竹种选择

Fruit Tree Species Selection and Innovation Countermeasures of Heilongjiang Province

黑龙江省果树品种选育及创新对策

The object of natural selection is the quasi-species, and the existence of the error threshold places a limit on the genome length that the organisms carry.

自然选择的目标是准物种，而误差阈的存在对生物体所能携带的基因组的长度施加了一个限制。

Years experiment and observation on artificial formative technology for bamboo culm demonstrated that the key points were well-prepared mould, selection of shoot species and moulding in time.

通过连续4a对毛竹竹材人工造型技术的试验观察，认为毛竹竹材人工造型要点为精制模具，选好笋种，适时上模。

Optimal height-diameter models for dominant coniferous species in Changbai Mountain, northeastern China Half-sib Progeny Test of Plus Tree and Superior Family Selection of Cunninghamia lanceolata

长白山主要针叶树种最优树高曲线研究杉木优树自由授粉子代测定及优良家系选择

Species Selection and Restocking Technique for Artificial Releasing in Lake

湖泊人工增殖放流品种选择与放流技术

Study on the Selection Inquiring System of Afforesting Tree Species in Daqing City

大庆市绿化树种选择查询系统的研究

Tree Species Selection of Optimization Pattern of Sand Control Forest and Their Arrangement

防风固沙林优化模式的树种选择及其配置

Some suggestions and strategies were put forward for street tree species selection and configuration, based on current natural condition in Shenyang and the criteria for the selection of street tree species.

根据城市的自然条件和行道树的选择标准，提出了沈阳市行道树树种选择与配置的对策与建议。

English natural scientist whose` On the Origin of Species' formulated a theory of evolution by natural selection ( 1809-1882).

英国博物学家（1809-1882），他的《生物起源论》阐明了自然选择的进化论学说。

Introduction and selection of Chinese jujube species Choice

枣树优良品种引种及选择试验

Experiment on Selection of Tree Species for Afforestation on Slopes Facing the Sea in Daishan County

岱山县临海一面坡造林树种对比试验

Approaching the Sea Coastal Protective Forest System Construction and Tree Species Selection in Xiamen City

厦门海防林体系建设与树种选择的探讨

Developing tree species in local area, strengthening selec-tion and breeding, especially introduction and tameness of color-leave plants to stress city gardens' features of Beijing are the important tasks on selection and development of city greening tree species in Beijing at present.

认为发展乡土树种，加强选种、育种工作，积极开展彩叶植物引种驯化，突出北京城市园林特色，是当前北京城市园林绿化树种选择和发展所面临的重要课题。