Bud is produced in both rhizome and tiller - node , rhizome can produce more buds than tiller - node on hordeum brevisubulatum , arundinella hirta , calamagrostis epigeios , c . rigidula and hierochloe glabra populations . both 1st age rhizome and tiller - node of 1st age tiller are mainly two contributors in importing of bud bank 根茎和分蘖节是芽的主要产生部位，牛鞭草、野古草、拂子茅、硬拂子茅和光稃茅香种群根茎的营养繁殖力比分蘖节强， 1龄根茎和1龄分蘖株分蘖节是芽库输入的主要贡献者。
The winter tiller is more than the spring tiller at quantity hi leymus chinensis , calamagrostis epigeios and c . rigidula population at the beginning growing season . it is an efficient strategy to increasing survival fitness and propagating potential for rhizome grass to grow many active and strong winter tillers 生长季初期，羊草、拂子茅和硬拂子茅种群返青的分蘖株以冬性植株多于春性植株，冬性植株生活力旺盛、抗性强，形成冬性植株是根茎型禾草种群提高生存适合度，增强营养繁殖力的有效策略。
It could improve carcass quality meat quality , reproductive ability of livestock , and was indispensible matter for normal elaboration of livestock ' s varietal performance . up till now , biotin could only be gained by the method of chemical synthesis and only imported from the foreign countries , and its price was very expensive and seriously restricted the development of our country ' s animal husbandry 由于生物素能够提高家畜胴体质量和改善肉质，提高家畜繁殖力，是家畜品种性能正常发挥所必需的物质。目前，生物素只能通过化学合成方法获得，且均从国外进口，价格昂贵，制约了我国畜牧科技和产业的发展。
