您要查找的是不是：
- specific seed orchard 特殊种子园
- They have found areas suitable for seed orchard purposes. 他们找到了适于营建种子园的地区。
- Study on Establishing Graft Seed Orchard of Pinus massoniana Lamb. 马尾松无性系嫁接种子园营建技术研究。
- 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。
- 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。
- 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。
- It could be argued that localities subject to periodic abnormally dry earlysummer 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。
- Analysis on the Variation of Female-male Flowers and Strobilus Production of Clonal Seed Orchard of Pinus tabulaeformis Carr. 油松无性系种子园雌雄球花量及球果量变异分析。
- Genetic variations of clonal traits and estimation of gamete pool composition in a clonal seed orchard of Pinus tabulaeformis. 油松种子园无性系性状变异与配子贡献研究。
- 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。
- Native-plant nurseries are also responding to the need to have regionally specific seed sources of wetland plants and increasing their diversity of offerings. 本土植物苗圃还可满足对具有地域特殊性的湿地植物种子的需求，增强培育品种的多样性。
- Results indicated that over-logging caused the increase of inbreeding and that establishment of well-designed seed orchard can effectively reduce inbreeding. 结果表明过度采伐导致群体自交程度增加，营建种子园可有效减少近交。
- 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。
- The average tree volume,height and diameter of 6 superior families were above 0.033 339 m3,11.31 cm,6.62 m respectively which had average genetic gains above 30%,9%,11%. These superior families could be used for seed orchard and vegetative propagation. 调查数据经过统计分析;从参试的家系中选出6个优良家系;其材积、胸径、树高平均值分别达到0.;033 339m3、11
- The growth of all the progenies from the clones in the seed orchard have exceeded those from their plus trees in plantations,having an average gain of 9.1%(4.7%~14.1%) for height and 14.5%(9.9%~23%) for DBH. 树高增长9.;1%25;胸径增加14
- The amount of female and male flowers strobilus from 12 families was investigated in Baisha seedling seed orchard of masson's pine (Pinus massoniana) from Shanghang County, Fujian Province. 摘要观测了福建省上杭县白沙林场马尾松实生种子园的21个家系花量，分析了家系内与家系间雌雄球花量、各家系雌雄球花量在不同冠层和方位的分布。
- Therefore, we claim the reason of the failure of seed production of the seed orchard is caused by the abortion of male strobili in the orchard and without mature tree around the orchard. 上述结果显示雌毬花至少有一部份胚珠的健康状况足以生产种子，故本种子园无法生产种子园的原因为花粉败育及邻近缺乏花粉源所致。
- Smaller seed orchards are more easily managed but can't produce enough seed. 小一些的种子果园稍微好控制一点，但是又不能生产出足够多的种于。
- Intercropping in seed orchards is greatly contributed to economic benefit. 实行园内间种,有利于提高经济效益。
- 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。
