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The age class structure of Salix oritrepha population in alpine, cloudy and wet area of east Qilian Mountian is studied ,on two levels of genets and their ramets and sprouting branches .The results show that genets population is very short of the first and second class seedlings,and most of seedlings belong to the third and forth classes, and the development trend of population on this level is stable;on the other hand,the age structure of remets and sprouting branches population is more complete,and its age class distribution chart likes triangle, belonging to increasing type.In general,Salix oritrepha population in this area is increasing, but its reproduct way have changed in community succession process in order to accommodate varying circumstances.

从无性基株个体种群和无性克隆分株及萌生枝种群两个层次上对东祁连山高寒阴湿地区山生柳种群年龄结构进行分析,结果表明:无性基株个体种群 0~10 龄级幼苗贮备严重不足,11~20 龄级苗木所占比重最大,种群动态呈稳定型;无性克隆分株和萌生枝种群年龄结构比较完整,结构分布图呈正三角形,种群动态表现为增长型;总体上来讲山生柳种群呈增长趋势,只是在演替过程中为适应环境其繁殖方式有所改变,导致现阶段山生柳种群两个层次结构状态。

We import the high-quality seedlings from France and select the soil and climate suitable for the grape growing.

采用进口法国优质苗木,同时选择适宜葡萄生长的土质、土壤结构和气候条件。

Seedlings of Honduras mahogany were laid horizontally for 4 and 10 mo to induce reaction wood.

本研究中,大叶桃花心木苗木经4与10个月水平横放生长,以诱导反应材形成。

Field moisture capacity is the key factor not only resulting in afforestation success or failure, but also that impacting on productivity of stand at hot-dry valley of Jinshajiang River. It was concluded by the investigation that: the contour trench (40 cm×40 cm), mixted with can increase the field moisture capacity, in accordance, the productivity of stand could bue improved in some degrees. But bearing the weight of soil capability, survival individual plant on unit area was about 525 plant/hm^2. Further-more, introduction of the grade 1 seedling in afforestation could improve survival rate, and facilitate the stand productivity.

土壤含水量是影响金沙江干热河谷造林成败的关键因子,同时也是影响林分生产力的限制性因子,通过试验得出:采用水平沟整地(40cm×40cm)、与多年生小灌木混交,可在一定程度上提高林地土壤含水量,从而使得造林保存率和林分生产能力均有提高,但是受其土壤承载能力的影响,单位面积的保存株数保持在525株/hm^2左右;此外,用Ⅰ级苗木造林,不但可以提高造林保存,对林分的后其生长也有促进作用。

Based on agroforestry systems under camphor trees, we compared the growth dynamics of bush ivy under different light environment, to explore the possibility of breeding bush ivy under trees and provide a scientific basis for increasing the rate of land use.

在香樟林下建立复合经营体系,比较林下不同光环境下熊掌木苗木生长动态,探讨林下育苗的可能性,为提高土地利用率提供科学依据。

Project Content: To Build a large-sized flowers and trees trade market in the north of China.

项目内容:建设中国北方大型的花卉苗木交易市场。

Another 100 acres to plant new varieties of seedlings, a number of one million Pachira macrocarpa, World Star, pepper wood, cinnamon, the Middle East, date palm, hibiscus Jade, Taiwan Luan tree, red, etc. Lintou.

另有100多亩地栽新品种苗木,有数百万棵发财树、世界之星、胡椒木、肉桂、中东海枣、玉芙蓉、台湾鸾树、红林投等。

The result also show that:mycorrhiza' s promotion to Populus ussuriensis seedlings ' growth is directly related to the improve ment of inoculated seedlings' chlorophyll content and enzyme activity.

结果还表明,菌根的促生长效应与菌根化苗木的叶绿素含量的增加及过氧化氢酶活性的提高呈正相关。

Effects of plant growth regulator "Shifengle" on transpiring water-consumption of Rhus chinensis and Rhus typhina.

采用BP3400精密天平等仪器对喷施不同浓度(10、204、0 mg/L)&施丰乐&溶液的当年生盐肤木和火炬树的实际蒸腾耗水状况进行研究,得出不同处理苗木在正常水分条件下及干旱胁迫过程中的日蒸腾耗水规律。

Conclusion] The experiment was scientific and practical, the result could be used for the Xanthoceras sorbifolia Bunge. seedling-raising in the area.

结论]试验具备科学性和实用性,培育的文冠果苗木可用于神东矿区下一生长季的植树造林。

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在对危险的南部地区访问时,他斥责什叶派民兵领导人对中央集权的挑衅行为。

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