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林木生长效应
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  “林木生长效应”译为未确定词的双语例句
     Effect of Fertilization on Growth of Pinus massoniana Forest
     马尾松施肥对林木生长效应
短句来源
     In this paper, the effects on increment of different fertilization treatments for 30 - year - old trees of Larix kaempferi were studied. The results from variances analysis show that the effect differences of different treatments on growth arent significant. But fertilization have some effect on the increment of near - mature - forest, the main factor of increasing incre-ment is N fertilizer.
     就日本落叶松30年生近熟林不同施肥处理对生长量的影响进行了研究,方差分析结果表明,不同施肥处理对林木生长效应的影响均不显著,然而施肥对近熟林生长仍有一定的影响,起增产效应的主要因素是氮肥;
短句来源
  相似匹配句对
     Effect of Fertilization on Growth of Pinus massoniana Forest
     马尾松施肥对林木生长效应
短句来源
     AN ANALYSIS ON GROWTH EFFECT OF NURSERY STOCK FOR TREE SEEDS TREATED WITH STATIC ELECTRICITY
     林木种子静电处理苗木生长效应分析
短句来源
     Tree Form Factor Growth Regularity
     林木主干形质生长
短句来源
     Study on Individual Tree Growth and Competition Effect of in Different Management Kinds of Chinese Fir Population
     杉木人工林不同经营类型林木生长与竞争效应研究
短句来源
     Trees Screen Effects on Space
     林木对空间的遮蔽效应
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Global climate change is an undoubtedly fact. It is very important to evaluate and predict impact of climate warming on tree growth. This study is attempted to determine the impact of global warming on growth of forest tree using data from provenance tests of masson pine ( Pinus massoniana ) as an example. It was found that Schmidtling’s regression model predicts a loss of about 8% in height growth if the average yearly temperature increases...

Global climate change is an undoubtedly fact. It is very important to evaluate and predict impact of climate warming on tree growth. This study is attempted to determine the impact of global warming on growth of forest tree using data from provenance tests of masson pine ( Pinus massoniana ) as an example. It was found that Schmidtling’s regression model predicts a loss of about 8% in height growth if the average yearly temperature increases by 2 ℃. The author believes that Schmidtling’s regression method couldn’t be used to precisely evaluate the effect of climate warming because of its inherently shortcoming. Based on Matyas’s growth response model and author’s research foundation,therefore,the author tries to model response functions of various provenances at average yearly temperature gradient,calculate height changes at different geographic areas after climate warming and establish response model of height change with average yearly temperatures or latitudes of seed sources. The results indicated that impacts of climate warming on masson pine height growth at different geographic zones could be predicted with response model of height change. An increase in average yearly temperature by 2 ℃ will result in accelerated growth at the northern part of masson pine distribution area if precipitation is sufficient,and at the southern of distribution area,the growth will decline.

研究全球气候变暖对林木生长的影响具有重要意义。以马尾松种源区域试验测定材料为例尝试预测气候变暖对我国林木生长的效应。根据 Schmidtling’s回归法预测 ,若年均温提高 2℃ ,马尾松 9年生树高生长将下降 8%左右。作者认为回归法有其固有缺点而难以确切说明气候变暖的效果。鉴于此 ,本文参照 Matyas’s生长反应模型和作者已有研究基础 ,构建不同种源在年均温环境梯度的反应函数 ,确定增温后不同地理区域树高生长的变化值 ,从而建立随产地年均温或地理纬度的反应模型。结果表明该模型可较好地预测气候变暖在不同地理区域内的效果 ,年均温增高 2℃将加速北部种源的生长 ,而南部种源的生长有不同程度的下降

A preliminary study on the impact of fertilization on CAI of young Chinese fir in different areas showed: In Xinyang, Henan Province, the effect of N fertilizer of P fertilizer was better in the first year of fertilization, but the effect of mixed fertilization of NP, KP or NPK was better than that of treatments of only N or P. The optimum one was treatment 11(NP 2K 1),which leads to an increase of the CAI of tree height and diameter in the breast height by 39%~104% and 54%~136% compared to the control(CK),respectively...

A preliminary study on the impact of fertilization on CAI of young Chinese fir in different areas showed: In Xinyang, Henan Province, the effect of N fertilizer of P fertilizer was better in the first year of fertilization, but the effect of mixed fertilization of NP, KP or NPK was better than that of treatments of only N or P. The optimum one was treatment 11(NP 2K 1),which leads to an increase of the CAI of tree height and diameter in the breast height by 39%~104% and 54%~136% compared to the control(CK),respectively . In Fenyi, Jiangxi Province, the effect of fertilization on diameter at the breast height was bigger than that on the tree height; the effect of P fertilizer was good whether it was applied mixed with other fertilizers or not. Among all the P treatments the effect of treatment 3 (P 3) was the most significant one, the CAI of diameter at the breast height of young Chinese fir was increased by 13%~37% within the four year of fertilization experiment. In Shunchang, Fujian Province, the effects of fertilization for young Chinese fir on the tree height and diameter were not so significant like that of the two areas mentioned above, further, this effect was not stable; the effect of fertilization in the third year was bigger that in other years, the treatment 9 (P 1K 1) was the best one. The important factors influencing the impact of fertilization on CAI of young Chinese fir are soil fertility, soil depth, climate and the beginning condition of the nursery stock such as the height and ground?diameter.

对不同产区杉木幼林施肥效应研究结果表明 :边缘产区—河南信阳杉木幼林施肥当年单施N肥、P肥效果较好 ,NP、PK、NPK肥配施效果好于单施 ;以处理 11(NP2 K1)效果最好 ,比对照 (CK)树高、胸径连年生长量分别提高 39%~ 10 4 %和 54%~ 136 %。一般产区—江西分宜杉木幼林施肥对胸 (地 )径生长的影响要大于树高 ;P肥无论是单施还是与其它肥料配施 ,均表现出较好的效果 ,尤其以处理 3(P3)效果最为显著 ,4年中杉木幼林胸 (地 )径连年生长量较对照(CK)提高 13%~ 37%。中心产区—福建顺昌杉木幼林施肥对树高和胸径生长的影响不如河南信阳和江西分宜 ,施肥虽然表现出一定效果 ,但对杉木幼林生长效应影响效果不稳定 ;施肥第 3年效果好于其它年份 ,以处理 9(P1K1)最好。土壤条件、气候因子、苗木的树高和胸径本底值是影响杉木幼林施肥林木生长效应的主要因子

In this paper, the effects on increment of different fertilization treatments for 30 - year - old trees of Larix kaempferi were studied. The results from variances analysis show that the effect differences of different treatments on growth arent significant. But fertilization have some effect on the increment of near - mature - forest, the main factor of increasing incre-ment is N fertilizer. The increment of the stands increased along with the increasing fertilizer quantity, but it would decline when fertilizer...

In this paper, the effects on increment of different fertilization treatments for 30 - year - old trees of Larix kaempferi were studied. The results from variances analysis show that the effect differences of different treatments on growth arent significant. But fertilization have some effect on the increment of near - mature - forest, the main factor of increasing incre-ment is N fertilizer. The increment of the stands increased along with the increasing fertilizer quantity, but it would decline when fertilizer quantity were too much. Fertilization of 3 - year continuous couldnt increase growth and would cost much comparing with fertilization of 2 times every other year. The increment of the stands reached the highest after 2-3 years of fertilization and then declined with the increasing of stands age. In the tests, the effect of the treatment of A2B1C1, A3B1C2, A2B2C1 and A1B1C1 were the best, which the economy benefit in the second year after fertilization increased 1987.84, 1 394.57, 1 302.55 and 1 074.40 yuan per hacter respectively than that of no fertilization. The ratio of the input to the output reached 2. 64, 1.60, 2. O1and 2. 14. The IRR value reached 0. 33 , 0. 13 , 0. 22 and 0. 24 respectively. It is effective by proper fertilization and timely cutting.

就日本落叶松30年生近熟林不同施肥处理对生长量的影响进行了研究,方差分析结果表明,不同施肥处理对林木生长效应的影响均不显著,然而施肥对近熟林生长仍有一定的影响,起增产效应的主要因素是氮肥;随着施用量的增加,生长量增加,但施肥量过大,生长量却有下降的趋势,连续3a施肥与隔年2次施肥相比,既未出现增产效果,又增加了投入成本;施肥后2~3a增长量最大,以后将随林龄的增加而逐渐消失。本试验施肥处理中,A2B1C1、C1、A3B1C2、A2B2C1和A1B1C1肥效最佳,施肥后第2年经济效益与不施肥(CK)相比,每公顷分别增加了1987.84、1394.57、1302.55和1074.40元产值,投入产出比分别达到2.64、1.60、2.01和2.14。内部收益率分别达0.33、0.13、0.22和0.24。即合理施肥、及时主伐是有一定效应的。

 
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