本文叙述了对青杨天牛病毒的研究成果。
This article expatiated about the researching on Saperda populnea Virus.
那青杨树又细又嫩，在一片娑娑声中摇曳。
The little poplars were slim and tender, and swayed rustling in the wind.
青杨是青海省营造山地农田林网的主要树种。
Populus cathayana is the main species to plant farmland forest net work in Qinghai province hill .
单宁含量与青杨脊虎天牛虫口密度之间存在比较明显的负相关性。
Negative correlation between tannin content and larvae density of X. rusticus was obvious.
采用高温水蒸气处理和加热处理固定大青杨木材压缩变形，并对两种处理结果进行比较。
The wood of poplar is compressed, then the compression deformation is fixed by high temperature steam and heating.
中国西南地区乡土杨树基因资源丰富，被认为是青杨组的现代自然分布和演化中心之一。
There are abundant genetic resources of poplars in southwest China, which is believed as a centre of Sect.
研究制定出青杨虎天牛的防治指标，为科学合理、经济有效地治理该虫提供了理论依据。
The research has provided the prevention standards, providing the theory basis for resolving the problem of the pest in scientific, proper, economical and effective ways.
结果表明，太青杨1号在适宜化学药品用量和磨浆条件下，可制得具有较好性能的APMP浆。
The results show that the Taiqing poplar 1 can be made to APMP pulp with good qualities in the suitable dosage of chemicals and the suitable conditions of refining.
水蒸气后处理法中大青杨压缩变形恢复率最低，为- 3%左右；落叶松压缩变形恢复率最高，为11.6%左右。
During the water steam treatment after compression, the recovery rate of Ussuri Poplar is -3%, the lowest one, while that of Larch is 11.6%, the highest one.
年轮生长的功率谱测定检出，大青杨年轮生长存在2.5、3.2、6.3年的周期，年轮生长的周期性主要是受气象因子影响所致。
The measurement of power spectra of growth ring demonstrates the variations of period every 2.5, 3.2, 6.3 year under the influence of climatic factor.
最后，根据上述研究结果，确定了30 mm厚小径木落叶松和大青杨锯材的干燥基准，提出了改善小径木锯材干燥质量的有效措施。
At last, final drying schedules of small-diameter lumbers of Larch and Cathay poplar were developed according to the result of this research, and Suggestions were given to improve drying quality.
主要研究结果如下：1。研究了小青杨单芽茎段培养和愈伤组织再生技术，为进一步开展离体叶片细胞染色体加倍以及原生质体培养奠定了基础。
Results are as follows: 1. Axillary buds culture and callus differentiation were studied in this paper, which provide experience for in vitro chromosome doubling and protoplast culture techniques.
主要研究结果如下：1。研究了小青杨单芽茎段培养和愈伤组织再生技术，为进一步开展离体叶片细胞染色体加倍以及原生质体培养奠定了基础。
Results are as follows: 1. Axillary buds culture and callus differentiation were studied in this paper, which provide experience for in vitro chromosome doubling and protoplast culture techniques.
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