• Research on log rule of timbers from artificial masson pine forest.

    马尾松人工林材种出材率表研究

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  • Ingredient: Acorus gramineus Soland, mint leaves, masson pine, lavender etc.

    主要成分: 石菖蒲 、 薄荷叶马尾松薰衣草

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  • The optimum conditions for two stage delignification of masson pine kraft pulp were studied.

    本文研究马尾松硫酸盐单段氧脱最佳工艺条件

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  • Effect of Amino sulfonic acid on hypochlorite bleaching of Masson Pine kraft pulp was experimented.

    试验氨基磺酸马尾松硫酸盐化学木浆次氯酸盐漂白影响

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  • Radial and tangential gas permeability of Masson pine wood were measured respectively in this paper.

    分析讨论了影响马尾松木材渗透性及其异性的机理。

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  • The distribution of Masson Pine forest is very wide in the upper ana middle reaches of Yangtse River.

    长江中上游地区马尾松林分布非常广泛

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  • The optimum conditions of masson pine kraft pulp single stage oxygen delignification has been studied.

    本文研究马尾松硫酸盐脱木素最佳工艺条件

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  • Experimental Masson pine stands of 6 seed origins were established in Gedong Village, Taijiang County.

    台江革东镇进行6个种源马尾松种源试验

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  • The Masson pine is a main kind of plantation tree in our country, which is rich in quantity and distributes most widely.

    马尾松中国主要人工林树种,蓄积量最大,分布地域广。

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  • The optimum conditions for single stage oxygen delignification of masson pine kraft pulp had been studied at oxygen pressure 0.

    研究马尾松硫酸盐木质素最佳工艺条件

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  • The main results were summarized as follows: 1. According to injured degree, 28 Masson pine families is divided into five grades.

    现将主要研究结果摘要如下:1.28个马尾松其受害的难易程度分为类。

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  • Rhizosphere effects of soil microbe of Masson pine in the six soils were apparently different and the changes ranged from 4.67 to 92.96.

    土体之间马尾松土壤微生物根际效应存在着明显差异变化范围是4.67 ~ 92.96。

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  • It aims to offer some gists for transfering of heat and mass in the combustion of Masson Pine wood and some ideas for wood fire retarding.

    研究可为揭示马尾松木材燃烧过程中的迁移规律提供依据,也木材阻燃机理的研究提供新的思路。

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  • Through the recycling of sulfate, TMP and GWP pulps of masson pine, the law of quality decay of recycled masson pine fiber has been summarized.

    通过马尾松亚硫酸盐浆、TMPGWP浆回用实验,本文得出了回用纤维品质衰变的基本规律

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  • Masson pine, the earlier successional species, wide distributes in northern Fujian, in this paper, its niche was analysed by quantitative method.

    福建北部马尾松林分布广马尾松又是次生演替的先锋树种

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  • The tracheid form and radial variance were studied for 15 years Masson pine plantations with five different planting densities in Longli, Guizhou.

    采集贵州省龙里林场马尾松密度试验林15生马尾松木材,5造林密度,研究造林密度对马尾松形态及其径向变异的影响。

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  • Increase of the phosphorus content can enhance the biomass of masson pine seedling, but the physiological effect of P contents on the seedling is various.

    增加磷浓度普遍提高各种源马尾松幼苗生物产量,不同磷浓度对幼苗产生的生理效应各不相同。

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  • By the statistical analysis method, the authors researched the growth model and cutting age of masson pine natural forest with the sample plot inventory data.

    根据标准地调查资料,应用统计分析方法研究生长模型结合森林经营实际确定采伐年龄

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  • Structural changes of lignin during the course of activation pretreatment for the oxygen delignification of masson pine kraft pulp were investigated in this study.

    前活性氧活化预处理过程中纸浆残留木素结构变化进行了研究。

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  • This paper deals with the effectiveness of H-HA models, D-H models and maximum density-D models of Chinese fir and Masson pine, making use of computerized simulation tests.

    计算机模拟试验方法,杉木马尾松平均树高、平均胸径最大密度数学模型的预报有效性进行检验。

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  • The distribution of pinitol in the masson pine seedlings and changes of pinitol content in needles of seedlings from different provenances under drought stress were studied.

    马尾松苗木中松醇分布干旱胁迫不同种源马尾松苗木针叶内松醇含量变化进行了测定

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  • The photosynthesis rate will increase with the descendant leaf potential and soil potential, which demonstrates that Masson pine has much higher productivity of drought stress.

    同时,光合利用效率水势土壤水势的下降总体呈上升趋势说明马尾松具有较高的耐旱生产潜力。

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  • The relationship between the atmospheric SO2 pollution and the decline of the masson pine forest located in Nanshan on the south bank of Yangtze River near Chongqing was studied.

    本文运用开顶式熏气装置研究重庆南山大气SO_2污染马尾松衰亡关系

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  • It can be found that broad-leaved evergreen forest contained more microbial biomass (MBC) and the ease of oxidation of carbon (EOC) compared with Chinese Fir and Masson Pine stands.

    结果表明常绿阔叶林土壤微生物和易氧化态碳含量高于马尾松杉木林土壤,杉木林土壤水溶性碳含量相对较低。

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  • This paper describes the effects of various barks, reinforcing resins, keeping-time after lay-up and pressure on the bonding strength of plywood made from Masson pine bark adhesive.

    本文探讨马尾松树皮胶压制室外型胶合板时,不同部位树皮不同增强剂、增强剂用量、单板涂胶陈放时间、热压压力等因素胶合强度影响

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  • The results indicate that the spatial distribution pattern of the dead pine trees in masson pine woods is the aggregation distribution pattern, mainly Poisson Binomical distribution.

    松材线虫萎蔫病病死木马尾松林内分布聚集分布,主要为波-二项分布。

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  • The results indicated that the effect of mixed masson pine and oak forest on soil amelioration was the best, that of grass was the second and the pure masson pine forest was the worst.

    结果表明混交林土壤改良效果最好草地次之马尾松则较差。

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  • Based on the analysis of the stands growth procedure and the site features, we provided the parameter criterion used to sort the low quality and low benefit Masson Pine secondary stand.

    根据对各等级林分生长过程及其立地特征分析提出了划分马尾松低质低效林的技术参数标准

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  • The paper strength index of masson pine CTMP was studied after alkaline sodium sulfite treatment, the pulp fiber surface properties of the masson pine CTMP were analyzed with XPS and AFM.

    研究碱性亚钠处理马尾松化学预热机械浆(马尾松ctmp)纸页强度指标利用XPSAF M技术分析了纸浆纤维表面性质

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  • The main components which can cause pitch trouble in the process of paper making with Masson pine TMP was simulated by using fatty acid, resin acid and oleic triglyceride as model materials.

    脂肪酸树脂三油酸甘油脂模型模拟了马尾松TMP造纸过程造成树脂障碍主要成分

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