The community structure and dynamics of soil water of Pinus sylvestris var. of the mongolica plantation were studied in a growing season.
对樟子松人工林群落结构和土壤水分动态进行研究。
The distribution pattern of Potaninia mongolica population is clump.
分布格局为集群分布。
The results revealed that the growth and colony size of P. globosa was suppressed by the M. mongolica.
通过实验发现了氮盐和磷盐是影响细胞群体形成及其直径大小的显著性因子；
Slope and spacing and intra-spacing had little effect on Pinus sylvestris var. mongolica and Jinhong apple.
坡度、株行距对樟子松、金红苹果人工林幼树的生长影响均较小。
Special black charcoal is a high density charcoal. which can burned by Quercus mongolica and Quercus dertata .
特种黑木炭是用柞、槲烧制的具有较高密度的木炭。
Therefore, using water-absorbing powder will increase the survival rate of seedlings in planting Pinus silvestris var. mongolica.
所以，对樟子松幼苗的根系用吸水剂进行适当的保水处理，无疑是会提高造林成活率的。
The community structure and dynamics of soil water of Pinus sylvestris var. mongolica plantation were studied in a growth season.
对樟子松人工林群落结构和土壤水分动态进行研究。
Mongolica under the situation of natural renewal, negative conservation by corral, and positive conservation by corral are studied.
消极围栏保护可缓解人为因素对四合木种群的影响，但无法有效促进四合木种群的更新；
What the biggest problem for planting Pinus sylvestris var. mongolica Litv. is easy to happen physiological drought. It can influence the survival and preserving rate of afforestation.
樟子松造林遇到的最大问题便是造林后易发生生理干旱，影响其造林成活率和保存率。
The size structure and distribution pattern of Picea mongolica population on sand dune and their rerlationship to eco-environment are studied by size structure in place of age structure.
本文用种群大小结构代替年龄结构研究了沙地云杉种群的大小结构、分布格局和动态规律。
The aim of this research is to extract and utilize secretion of phloem of Tilia mongolica that use them to increase the zoophobous ability and phylactic power of non-resistant tree species.
研究椴树韧皮分泌物其目的则是提取、利用该物质用于非抗树种提高抗虫性和免疫力。
Growth characteristics of 2-year-old seedlings from 10 introduced P. sylvestris L. ssp. kulendensis Sukaczw provenances were determined in contrast with' domestic Pinus sylvestris var. mongolica Litv.
以国内樟子松为对照，对引进的10个种源盐松2年生苗木生长性状进行了测定和分析。
The azotobacteria in the rhizosphere of Leymus chinensis and Agropyron mongolica were separateda, nd their activities were measured by the methods of dilution-plate method and etylene reduction assay.
利用平板划线法和乙炔还原法对羊草和冰草根际固氮菌进行分离和固氮活性的测定。
The azotobacteria in the rhizosphere of Leymus chinensis and Agropyron mongolica were separateda, nd their activities were measured by the methods of dilution-plate method and etylene reduction assay.
利用平板划线法和乙炔还原法对羊草和冰草根际固氮菌进行分离和固氮活性的测定。
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