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- Water status of bare-root seedlings of Chinese fir and Masson pine 杉木、马尾松裸根苗水分关系研究
- Seedlings of Chinese fir 杉苗
- This paper deals with the effects of ASU on the yield of Chinese Fir seedlings grewing on loamy yellow-red earth. The study was carried out on the basis of pot experiment by using tracer isotope ~(15)N. 本文系利用~(15)N示踪技术以研究ASU与氮肥配施对杉木苗的效果,氮素利用率及氮素在土壤和苗木间的平衡状况。
- In Beijing area,it is very difficult to roise seedlings of Chinese white poplar from seeds due to their abortion. 在北京地区,由于毛白杨种子败育,因而以播种的方法获得实生苗非常困难。
- Consequently, the results show that the RMC method has a distinct effect on recovering species diversity of Chinese fir plantations in southern China. 结果表明,残留物管理育林法对杉木林地的物种多样性有着明显有恢复作用。
- In wood processing, especially the processing of Chinese fir, wood is liable to crack when dried with the core, which affects productquality. 在木材加工中,尤其是杉木加工,在银材烘干过程中木才带芯烘干造成木材列裂、裂缝,影响产品质量。解决木材带芯烘干中开裂技术难题。
- Biomass of Chinese fir plantations in Fujian Province and its allocation among leaf, branch, stem and roots were studied based on the published biomass data. 摘要通过收集福建省杉木林生物量数据,对福建省杉木林生物量及其分配规律进行分析,结果表明,杉木林生物量随年龄增长呈逐渐增加趋势,并以幕方程拟合的效果最好。
- Research progress on cross breeding of Chinese fir was summarized in this paper and the primary insufficiency was analyzed. 摘要概述了我国杉木杂交育种研究进展,分析了杉木杂交育种存在的主要问题及其对策。
- Therefore,the soil fertility were promoted pronouncedly by the replacement of Chinese fir stand by the Cinnamomum cassia stand. 说明肉桂林取代杉木林后,林地土壤肥力得到较明显的改善。
- Based on the data observed at Huitong Ecology Station, the carbon content of Chinese fir plantation ecosystem was studied. 对杉木人工林生态系统的碳素含量进行了定位观测。
- Genetic variations of growth traits, wood basic density and tracheid length of Chinese fir clones were investigated in this paper. 摘要对杉木无性系生长性状、木材基本密度和管胞长度的遗传变异进行了研究。
- Use test-tube seedlings of Chinese date Goutouzao and Junzao as explants,effect of TDZ and 6-BA on subculture of Chinese date were studied and selected its suitable composition in subculture. 以狗头枣和骏枣试管苗为材料,研究了TDZ和6-BA在枣树试管苗继代培养中的效应并筛选了适宜组合。
- One-year-old seedlings of Chinese Redbud (Cercis chinensis) were grown in a pot with varying soil water levels, soil salt (NaCl) levels and intercross stress to determine photosynthetic characteristics. 摘要应用盆栽试验方法,采用完全随机试验设计,研究了1年生紫荆实生苗在不同土壤盐分和水分及交叉胁迫下的光合特性。
- The company seeks to harvest bamboo mainly of the monopodial species of Phyllostachys pubescens withsmall amount of Chinese fir and Pine within the same plantation. 该林地以种植毛竹为主,杉木和松木为辅。
- The seedlings of watermelon grow on the ground. 西瓜的瓜秧是在地上的。
- Big seedlings of Pinus tabulaeformis Carr. 油松大苗
- That period was a bright page in the history of Chinese literature. 那个时期是中国文学史上光辉的一页。
- Derooted seedlings of Cucumis sativus L. 黄瓜去根苗
- The biological and ecological characteristics of Chinese fir dormancy buds as well as its sprout mechanism, sprout regeneration technique and sprout regeneration evaluation were summarized in this paper. 摘要对杉木萌芽更新繁殖结构?休眠芽的生物、生态学特性、萌发机理、杉木萌芽更新的应用技术,以及萌芽更新的评价进行总结。
- This paper presented a kind of NN modeling method named Generalized Regression Neural Network (GRNN), through which the physical, mechanical properties of Chinese Fir could be obtained from its internal structure parameters. 摘要给出由木材内部结构参数确定其物理力学特徵的神经网络设计与实现的方法-广义回归神经网络(GRNN)模型。