您要查找的是不是：
- We do a prevention cure experiment to Dendrolimus superans (Butler) and Clostera anastomosis Linnaeus using low intensity prescribed fire on Populus davidiana Dode. 在落叶松人工林和山杨(Populus davidiana Dode.;) 林内分别进行了低强度计划火烧对落叶松毛虫[Dendrolimus superans(Butler)]和分月扇舟蛾[Clostera anastomosis(Linnaeus)]的防治实验。
- Propagation techniques on root turion sprout browse of Populus davidiana Dode 山杨根蘖萌生嫩枝扦插繁殖技术
- Keywords Populus davidiana Dode;Galangin;7 dihydroxyflavaone;Ombuin;onti inflammatory activity; 山杨;高良姜素;7-甲氧基白杨素;商陆素;抗炎活性;
- Populus davidiana Dode 山杨
- The researches on Populus davidiana forest were carried out in Wuling Mountain Natural Reserve. 对雾灵山自然保护区的山杨林进行了研究。
- Populus davidiana Var. Macrophylla 大叶山杨
- Populus davidiana secondary forest 山杨次生林
- Populus davidiana var.macrophylla 大叶山杨
- Populus davidiana - Quercus llaotungensis mixed forest 山杨-辽东栎混交林
- the 20 years old secondary Betula platyphylla and Populus davidiana forests 白桦山杨幼林
- the 80 years old secondary Betula platyphyll and Populus davidiana forests 白桦山杨成熟林
- Keywords Populus davidiana;Populus tremuloides;crossing breed;asexual propagation;molecular marker; 中国山杨;美洲山杨;杂交育种;无性繁殖;分子标记;
- Nitrogen Nutrient Relationship Among Populus davidiana, Betula platyphylla and the Regeneration Tree Species in Secondary Birch Forest 杨桦林中杨桦及林下更替树种幼苗、幼树的氮素营养关系
- Populus davidianan. 山杨
- Populus davidiana x P. bollena 山新杨
- Keteleeria davidiana (Bertr.) Beissn. 铁坚油杉
- Populus davidiana × bolleana 山新杨
- Triploid clones of Populus tomentosa Carr. 三倍体毛白杨
- Populus alba L. var. pyramidalis Bunge. 新疆杨
- Populus davidiana×P.bolleana 山新杨
