The effect of gamogenesis,chlorophyll,superoxide dismutase(SOD) and catalase(CAT) of Egeria najas by different concentrations of suspended silt was studied.
研究了悬沙对细叶蜈蚣草(Egeria nojas)营养生殖、叶绿素、抗氧化酶(超氧化物歧化酶和过氧化氢酶)等影响。
Vegetative propagation characters of clonal populations of Hierochloe glabra in Songnen Plain.;
松嫩平原光稃茅香无性系种群的营养繁殖特征
To study the potential invasive characteristics and the successful invasion of alien species Mirabilis jalapa,a series of experiments were carried out to examine the capacities of sexual reproduction and vegetative propagation of M.
在实验室条件下测定了紫茉莉(Mirabilis jalapa)的有性繁殖能力、营养繁殖能力、化感作用和耐盐特性,对其入侵特性进行了初步研究,并对其入侵风险进行了评估,结果表明:(1)紫茉莉种子繁殖能力强,根和茎亦具有营养繁殖能力;(2)紫茉莉种子萌发期间耐盐性强于耐盐植物蜀葵;(3)紫茉莉对其它植物具有较强的化感作用潜能,对小麦和白菜的种子萌发及幼苗生长产生明显的抑制作用。
An experiment on the taproot cutting of three-year-old seedlings of Carya cathayensis which were treated with different types of hormones of different mass fractions was carried out to accelerate their vegetative propagation and keep their excellent properties.
为加快山核桃Carya cathayensis营养繁殖和保持优良性状,以3年生山核桃实生苗主根为材料,用不同种类和不同质量分数的生长调节物质处理后进行扦插繁殖试验。
The sexual and vegetative reproductions of A.
不同样地刺五加的有性生殖和营养繁殖具有一定的差异,在郁闭度为40%的蒙古栎林,其有性生殖的坐果率为51。
It was widely spread in the alkali-saline meadow in the Songnen plains of China, and there were some biological-ecological and productive characters, such as the tough alkali-saline environment endurance, vigorous vegetative reproduction, long vegetative period after fruit and high value of forage nutrition.
按照分蘖节营养繁殖世代的龄级划分方法 ,在生长季末期 ,野大麦无性系的芽库由 5个龄级组成 ,苗库由 4个龄级组成 ,均呈增长型的龄级结构。
Under natural environmental conditions of Taihu Lake, Elodea Nuttallii and six other species of submerged plant depended mainly on vegetative reproduction to survive and spread their population.
在太湖自然条件下,伊乐藻等7种沉水植物主要靠营养繁殖来延续和扩大种群。
A "vegetative propagule" is any type of vegetatively propagated tree.
“营养繁殖体”是无性繁殖树木的任何类型。
EFFECT OF GRAZING INTENSITY ON CHARACTERISTICS OF VEGETATIVE PROPAGATION OF THREE PLANTS IN THE STIPA BREVIFLORA STEPPE
放牧强度对短花针茅草原3种主要植物营养繁殖性能的影响
THE NUTRIENT REQUIREMENTS OF THE ANGORA DOES REPRODUCTION PERIOD FOR WOOL PRODUCTIONN
德系安哥拉繁殖母兔产毛营养需要的研究
Study on Physiological Genetics of Cutting Propagation and Mineral Nutrition of Masson Pine (Pinuns Massoniana Lamb.);
马尾松扦插繁殖与矿质营养的生理遗传学研究
Effect of Diffent Nutrient Levels on Reproductive Performance of Tan×Small Tail Han Ewes;
不同营养水平对滩×寒杂种母羊繁殖性能的影响
The Relationship Between the Reproductive Performance of Hyperprolific Primiparous Sows and the Nutrient Cost of the Piglet;
高产仔母猪繁殖力与仔猪营养成本的关系研究
a place where oysters are bred and grow.
养殖和繁殖牡蛎的地方。
propagating medium
植物繁殖用土壤培养基
Breed [livestock]
饲养,繁殖,育种 [畜牧]
It is necessary to impose control over those aspects of reproduction which are open to manipulation by nutrition.
需要严加控制繁殖过程，而这个过程是容易受营养影响的。
However, reproduction rates of some insects such as aphids are influenced by nutrition.
然而，一些昆虫的繁殖率，如蚜虫等是受营养影响的。
Many trees can be propagated from vegetative shoots, thus reproducing their genotypes exactly.
许多树木能够利用营养枝繁殖，这样，它们的基因型可以精确地传衍。
Effects of Different Nutrition Levels on the Performances of Reproduction and Cashmere Production of Inner Mongolia White Cashmere Goats;
不同营养水平对内蒙古白绒山羊繁殖性能及产绒性能的影响
Effect of Nutrition Level During Gestation on the Reproductive Performance of Primiparous Sow;
妊娠期营养水平对初产母猪繁殖性能影响的研究
Effects of Light and Nutrient Treatements on Three Plants of Saussurea DC. on the Eastern Alpine Meadow of Qinghai-Tibet Plateau
光照、营养处理对青藏高原东缘三种风毛菊属植物繁殖对策的影响
Effects of Dietary Fiber on Nutrition Physiology and Reproductive Performance in Multiparous Sows
日粮纤维对经产母猪的营养生理作用及繁殖性能的影响
The Observation of the Reproductive Behaviors of Trumpeter Hornbill(Ceratogymna bucinator) and the Discussion of Breeding Technology Raising in Cages
笼养噪犀鸟的繁殖行为观察与繁殖技术探讨
A Study on the Key Technique of Artificial Reproduction and Farming of Kaluga Huso Dauricus;
达氏鳇人工繁殖和养殖关键技术研究