查询词典 jack pine

This study can provide references and make ready for introducing good Jack Pine families from North America scientifically and constructing good seed production area.

本项研究可为科学地从国外引进优良班克松家系、建立优良的种子园提供参考和做好准备。

Jack pine had higher rate of gas exchange and water use efficiency than black spruce when seedlings were well watered.

解除干旱胁迫后，黑云杉的气孔敏感性、光合能力及水分利用效率的恢复都要比北美短叶松更快。轻度的干旱胁迫锻炼可以帮助北美短叶松在更严重的干旱胁迫下保持固有而强劲的耐旱能力。

Mortality in jack pine stands decreased from(67.6%) to 32.7% with increasing PCT intensity from A to C.

结果表明：随着疏伐强度从1.22 m×1.22 m增加到2.13 m×2.13 m，北美短叶松的死亡率从67.6%下降到32.7%。

And shoots of jack pine Pinus banksiana Lamb.

的叶片，短叶松（Pinus banksiana Lamb。

Jack pine ; black spruce ; drought tolerance ; photosynthesis ; transpiration ; stomata conductance ; water use efficiency

北美短叶松；黑云杉；耐旱性；光合作用；蒸腾作用；气孔导度；水分利用效率

Effects of repeated cycles of dehydration\|rehydration on gas exchange and water use efficiency were studied in one\|year\|old jack pine Pinus banksiana Lamb.

该文研究了多重复干旱循环对1年生北美短叶松和黑云杉苗木的气体交换速率及水分利用效率的影响。结果表明，多重复干旱循环对它们的气体交换有显著影响（P＜0.5），而对其水分利用效率影响不大（P＞0.1）。

Determined to give her son, Jeremy, the childhood he deserves, Chloe Evans has left a tough past behind and is starting fresh in the charming resort town of Jack Pine, Oregon.

为了给儿子杰瑞一个健康的童年，尹雪若拋开难堪的过去，来到奥勒冈州杰克松镇这个静谧迷人的度假胜地重新开始。

Diurnal gas exchange for aspen, jack pine and black spruce indicated afternoon depression. In hazelnut, a second peak in Pn occurred in the afternoon.

欧洲杨、短叶松和黑云杉的日气体交换率均表现午后抑制，榛子在下午出现了第二个Pn高峰。

Diurnal peaks in Pn for three age shoots of jack pine and black spruce occurred in the early morning between 7∶00-8∶00 on sunny days. The maximal rates of Pn and gs were 7.5 μmol.m-2.s-1 and 0.11 mol.m-2.s-1 for 1-year-old shoots of jack pine and 6.1 μmol.m-2.s-1 and 0.11 mol.m-2.s-1 for 1-year-old shoots of blackspruce.

而短叶松和黑云杉3个不同年龄树枝的Pn和gs的高峰出现在早晨7∶00到8∶00，其值分别是短叶松一年龄树枝为7.5 μmol.m-2.s-1和0.11 mol.m-2.s-1，黑云杉一年龄树枝6.1 μmol.m-2.s-1和0.11 mol.

After treated by alkaline peroxide, the extractive in jack pine TMP long fiber decreased evidently, its surfaces produced large numbers of carboxyl. The H2O2 dosage in AP treated process had evident effect on brightness of sheet. The action of alkali in AP process is to make structure of cell wall loose.

碱性过氧化氢处理 TMP长纤维组分能明显降低浆中抽出物含量，纤维表面产生大量的羧基；过氧化氢用量的变化对白度影响较为明显；碱的作用是使细胞壁结构变得松弛，随着用碱量的增加，抽出物含量明显降低，羧基含量大幅度增加，纤维表面O/C比也略有增加，各项强度均增加。2。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。