seed orchard造句

• They have found areas suitable for seed orchard purposes .
  他们找到了适于营建种子园的地区。
• In 1954 the first experimental seed orchards were planted .
  到1954年，第一批实验性种子园建立起来了。
• Seed orchards should not be established on sites which are seriously susceptible .
  种子园不应设在易受严重影响的地方。
• Gibbenellic acid is now applied as a standard seed orchard treatment in many japanese orchards .
  在日本，使用赤霉酸已成为许多种子园的常规措施。
• Its use is limited to the preservation of breeding material or the establishment of clonal seed orchards .
  其用途仅限于保持育种材料或建立无性系种子园。
• New and more sophisticated methods of physiological control should be available to the seed orchard manager .
  新的和更先进的生理控制方法，对于种子园管理人员将会有效的。
• The main function of a seed orchard is to produce seed of improved genetic quality on a regular and sustained basis .
  种子园的主要作用就是经常和持续地生产改良了遗传品质的种子。
• It could be argued that localities subject to periodic abnormally dry early summer conditions should be favoured for seed orchard sites .
  可以证明有周期性反常干旱早夏的地方作种子园园址应是有利的。
• Most seed orchard theory is based on the assumption that panmixis will occur and that selfing will not be a serious problem .
  大多数关于种子园理论，是以假定能发生随机交配和自花受精而不会成为严重问题为依据的。
• Progress on reproductive system of forest seed orchards
  种仁营养成分和无机元素含量的变异
• Advances on the fruiting regularities in seed orchard of pine
  我国松树种子园结实规律的研究进展
• Preliminary study on cone borers of grafting seed orchard of pinus massoniana
  马尾松嫁接种子园球果害虫的初步研究
• Technique on establishment and management of seed orchards for major coniferous species
  主要针叶造林树种种子园营建技术
• Early genetic analysis of some clones in the improved slash pine seed orchard
  湿地松改良种子园部分无性系的早期遗传评价
• Rogued seed orchard
  去劣种子园
• Distribution of cones in the crown and the ratio of pollen to ovule in seed orchard of cunninghamia lenceolata hook located at chongyang
  崇阳杉木无性系种子园球花在树冠中的分布及其配子产量研究
• But seed orchards are difficult to control , because tree pollen spreads so far that alien , non - elite trees almost inevitably muddy the gene pool
  但是有种子的果树很难控制，因为花粉传播的太远了，一些其它种类的树木就会不可避免地弄乱此基因库。
• In order to push the development of planting chinese fir by utilizing fine variety , research progresses on techniques of establishing chinese fir seed orchard , improving output and quality of seed orchard and the like were commented systematicaly , and some measures for future research were put forward
  笔者对杉木种子园建园技术、提高种子园产量和品质技术等方面的研究状况作了较为系统的综述，并对未来发展提出了建议。