查询词典 poplars

The key pests and rat include: nematodiasis of the pines and pine moth, forest rats, defoliator of the poplars, bristletail.

二是松毛虫、森林鼠害、杨树食叶害虫等常发性病虫害；三是小蠹虫、萧氏松茎象等钻蛀性害虫。

Poplars statuesque cold-eyed women in smooth,caress-inviting green silk en promenade.

松林 堂堂的军歌悠扬……愁云森耸向苍穹……劲节傲冰霜。

Between poplars we caught glimpses of mechanical cotton - picker s inching their way through the fields.

从白杨树之间我们瞥见摘棉机在地里徐徐前进。

Poplars are one of the most important deciduous trees in the world. China is rich natural resource of poplars.

杨树是世界上广泛栽培的重要造林树种之一，我国是世界上杨树资源丰富的国家。

The main components of rape stalk (cellulose, hemicellulose and lignin) approach to the corn stalk and reed which are members of graminaceous plants and poplars which belongs to broadleaf. The ash content and extractions of rape stalks are close to that of corn stalk and reed while more than poplars.

其主要化学成份(纤维素、半纤维素、木质素)接近于玉米杆、芦苇两种常见禾本科植物和杨木阔叶材，灰分和抽出物与玉米杆、芦苇相当且多于杨木。

There were a few lordly poplars before the house.

那幢房子前有几棵挺拔的白杨树。

2It is practical that triploid white poplars induced by the chromosome doubling of megaspore based on the development of microspore.

2通过小孢子发育进程参照系的设立，实现了大孢子染色体加倍诱导白杨三倍体技术的实用化。

Results indicated : The meiosis stages of megaspore of white poplars are different, while there was a association between MMCs and PMCs meiosis in the same hybrid.

研究表明，不同白杨的大孢子母细胞减数分裂进程存在差异性，而同一树种的大、小孢子母细胞减数分裂进程存在时序性相关。

Under the same environmental conditions when the meiosis of microspore mother cell develop into tetrads the female buds were dipped duly with colchicine solution, which guaranteed that chromosome doubling of megaspore in white poplar could be accomplished in a short time. So much workload was cut down, and induction efficiency of triploid white poplars was also improved.

当相同生境以及培养条件下的小孢子母细胞减数分裂达到四分体后，适时采用秋水碱溶液对雌花芽进行浸泡处理，可保证白杨大孢子染色体加倍处理能集中于一个较短的时间段内进行，从而大大减轻了工作量，同时提高三倍体诱导效率和效果。

The effect of the angle on the basic density of the reaction wood: The basic density of poplars and pines in the reaction wood area are both larger than the opposite wood area in different angles.

倾斜角度对应力木基本密度的影响：不同倾斜角度下杨树、火炬松应力木区基本密度均大于对应木区基本密度。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。