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- poplar forest belt 杨树林带
- Seen from a distance, the forest belt has a very good shape. 从远处看去,这条林带有很好的林相。
- Intercropping of narrow crown poplar and agricultural crops will be popularized and networks of forest belts on farmland will be built. 在平原农区,大力推广窄冠型杨树与农作物间作,并营造农田林网;
- In addition, S. guani could form field population in the poplar forest after it was released.Poplar longicorn was also sustained. 此外,肿腿蜂释放后可在杨树林间形成野外种群,并对杨树天牛具有很好的持续控制作用。
- Ejin Banner now has almost 30000 hectares Diversifolious poplar forest which is listed on state-level nature protection area. 额济纳旗现存的胡杨林约3万公顷,已被列为国家级自然保护区。
- It shows that the increasement of cultivated land and living space stem from reclaiming grassland and occupying desert diversiform-leaved poplar forest. 结果显示,耕地和城镇居住用地的增加完全来源于对草地的开垦和对荒漠胡杨林的占用。
- Sea, white sand, and the forest belt to build new kinds of pavilions, constitutes a colorful picture of a mirage. 海浪、白沙、林带以及林中新筑的各式亭台楼阁,构成了色彩斑斓的海市蜃楼图景。
- Ai Ai Xuefeng, Wu Hua Fanhuasijin the meadow, green spruce forest belt, silver water Piaodai, Chan Chan streams, springs Ding Dong. 皑皑雪峰,繁花似锦的五花草甸、苍翠的云杉林带、银色的水飘带,溪水潺潺,泉水叮咚。
- Gebang River,20km in length, is located in the secondary forest belt of virgin forest,it has a reputation of "Jiuzhaigou of Guizhou". 蛤蚌河全长20余公里,为原始森林次生林带,有“贵州九寨沟”之誉。
- Discussed to protect environmental problem and problem of protective forest belt (the treatment of deserted crosstie and processing problem) . 讨论了保护环境问题和保护林带问题(废弃枕木的加工和处理问题)。
- An example for such conditions is the Tarim River and theEuphrates Poplar Forests at its banks and branches. 塔里木河和生长在其岸边和支流上的胡杨就是干旱地区生态环境的一个典型。
- The difference between highest and lowest monthly mean values is about 72% in Broad-leaved Korean Pine forest,73% in Asian white birch forest,26% in David poplar forest,56% in Spruce-fir forest,and 144% in Ermans Birch forest. 不同群落细根现存量月动态变化也有较大差异,月均最高最低相差阔叶红松林约为72%25、白桦林近73%25、山杨林26%25、云冷杉林56%25、岳桦林144%25。
- Natural riparian poplar forests and their Conservation strategies in Etris river, Xinjiang. 新疆额尔齐斯河河谷天然杨树林及其保育对策研究。
- The results are as follows:(1)The wheat at the north side of shelter?forest belt had a lower output. It is much lower than that on contrast district and also lower than that at the west side of forest?belt. 结果表明:(1)林带附近小麦产量明显低于对照区产量,林带对其北侧小麦产量影响的程度大于对西侧,且胁地范围比西侧的大;
- The large stretches of dying poplar forests and woods on the lower reaches of the Tarim River have been brought back to life. 塔河下游大片的胡杨林和低矮灌木起死回生;
- The bacterial swollen stem canker of poplars is prevalent on large scale in man-made poplar forest of Northeastern of China. 杨树细菌肿茎溃疡病在中国东北地区杨树人工林大面积发生,引起幼林和成林的树干和枝坏死、腐烂、溃疡、肿茎、木质变色,造成严重损失。
- fast growing and high yield poplar forest 杨树丰产林
- Compound Forest Belt and Its Benefit Analysis 复合林带及效益分析