查询词典 plantation

With methods of limited areas, root systems of plant individuals were limited in a specific range, providing definite spatial boundary and solid basis for calculation of water requirement needed by plant individuals. On the basis of calculation of amount of water requirement, areas needed by every species to ensure enough water requirement are as follows: Populus simonii is 80.3m〓, Ulmus macrocarpa is 35. 4m〓, Artemisia halodendron is 7. 0m〓, Salix gordejvii is 11. 2m〓. Prunus armeniaca is 15. 2m〓, and Caragana microphylla is 15. 6m〓. The corresponding rational density of plantation which can maintain soil water balance and can ensure plantation stability is 125 individuals/ha for Populus simonii, 285 individuals/ha for Ulmus macrocarpa, 625 individuals/ha for Prunus armeniaca, 625 individuals/ha for Caragana microphylla, 833 individuals/ha for Salix gordejvii, and 1428 individuals/ha for Artemisia halodendron, respectively.

运用有限面积法将植物根系限制在明确的边界内，为植物耗水量的计算提供了一个明确的空间边界范围和可靠的基础，探索性和尝试性地得出了近似野外真实状态下植物个体的耗水量，以此为基础计算得出小叶锦鸡儿、山杏、黄柳、差巴嘎蒿、榆树、杨树等树种的水分营养面积分别是15.6m〓、15.2m〓、11.2m〓、7.0m〓、35.4m〓和80.3m〓，与此对应的能够维持林地土壤水分平衡和林分稳定性的各树种人工林的合理密度为：杨树125株/公顷，榆树285株/公顷，杏树625株/公顷，小叶锦鸡儿625株/公顷，黄柳833株/公顷，差巴嘎蒿1428株/公顷。

The results showed that Mg application considerably alleviated Mg-deficient symptom and increased magnesium nutrition on leaf of shatian pumelo; while soil in the orchard contained medium K and lack of Mg, yield and plantation income of shatian pumelo comparatively increased by 1.2% 18.7% and 0.4%~24.7% at the level of the amount of potassium oxide 340.2 kg/hm^2 applying Mg 22.5 kg/hm^2 and 45.0 kg/hm^2 while yield and plantation income of shatian pumulo comparatively increased by 11.2% 31.7% and 11.7%~39.4% at the level of the amount of potassium oxide 453.6 kg/hm^2 applying Mg 45.0 kg/hm^2, 81.0 kg/hm^2 and 117.0 kg/hm^2, and fruits quality was improved as well.

结果表明，施镁可明显减轻沙田柚叶片的缺镁症状，提高叶片镁素营养；在土壤有效钾含量中等，有效镁含量缺乏的情况下，施用钾肥(K2O) 340.2 kg/hm^2基础上配施镁肥 22.5及45.0 kg/hm^2，果实产量提高1.2%~18.7%，种植效益提高0.4%~24.7%；施用钾肥(K2O) 453.6 kg/hm^2基础上配施镁肥 45.0、81.0及117.0 kg/hm^2，果实产量提高11.2%~31.7%，种植效益提高11.7%~39.4%，同时柚果品质得到改善。

Except total potassium and quick-acting phosphorus, every target in nitrogen fixation plantation was higher than that in non-nitrogen fixation plantation.

不同林型植被，土壤的腐殖化作用有明显差异，土壤有机质、各营养元素和阳离子交换量增加不同，除全钾、速效磷以外，表现为刺槐侧柏混交林＞刺槐＞侧柏＞荒地。

In China,the land resources that can be used to produce material for liquid fuels are:plantation field of sorghum and maize that can be substituted by sweet sorghum,winter idle field in South China,sloping landthat is needed to convert into forest, oil plant forestry land,and in-support plantation land.

我国能够用来种植能源作物和能源植物的土地资源主要有甜高粱替代高粱和部分玉米的耕地、南方冬闲田、退耕还林的土地、油料林地、和后备土地。

Self-thinning mechanism and climate reactions of growth of Chinese fir plantation are theoretical basic forsustainable management and development of Chinese fir plantation.

杉木人工林自然稀疏机制与生长的气候响应是杉木人工林持续经营的理论基础，对于指导林业生产具有重要意义。

Using quadratic orthogonal rotation design,this paper establisheda mathematical model of density change during self-thinning for Cunninghamia lanceolata plantation,and theinner law of density change during self-thinning for Cunninghamia lanceolata plantation were analyzed.

进一步应用数量化理论I分析杉木人工林自疏过程密度变化与环境因子间的相互关系，确定影响杉木林自疏过程密度变化的主要环境因子为海拔、坡位和林分平均胸径，从而为杉木林自疏机制的定量描述提供了依据。

The water, soil, light, thermal resources are abundant in Shihezi and the surrounding areas, possessing over 10 million mu of arable land, annual sauce-use tomato plantation is 200 thousand mu, meanwhile large amount of red pepper, safflower, marigold and other economic crops planted here, so plantation area can be extended in accordance with the demand.

石河子及周边县市水、土、光、热资源丰富，拥有1000多万亩耕地，每年种植酱用番茄20万亩，大量种植辣椒、红花、万寿菊等经济作物，并可根据需要扩大种植面积。

The resulted that there was an obvious rhizosphere effect in all growing years of Caranaga microphylla plantation. The pH value of rhizosphere soil was lower than those of near rhizoshphere soil at different growing years. The content of organic matter, total N and available K in rhizosphere soil were all higher than those in near rhizoshphere soil, but the content of Olsen-P in 5-age plantation was remarkably deficient in rhizosphere soil.

对不同生长年限的小叶锦鸡儿人工灌丛根际土壤变化规律研究表明，根际土的pH均小于根外土：土壤有机质、全氮、速效钾在根际土中均有一定程度的富集现象；而5年生的小叶锦鸡儿根际土的有效磷含量出现了亏缺。

Comparing guild composition reveals a food resource view of the difference between each landscape: grassland landscape supports proportionally more shrub insectivores than other landscapes; conifer plantation landscape supports more ground feeders and also shrub insectivores; natural forest landscapes support bole insectivores that almost never inhabit conifer plantation nor grassland.

以生态同功群探讨不同地景所能提供的食物资源差异，发现草生地地景能承载较多的灌层虫食者、人造针叶林地景拥有较多的地面觅食者与灌层虫食者、天然林地景拥有的树干虫食者则几乎不出现在其他地景内；然而数量最多的树层觅食者在各地景间差异不明显。

Fertilizer and irrigation programs used and banana yields obtained in the Toledo plantation, Santa Marta, Colombia from 1989 to 1992. and Fig.4 Number of harvested bunches/ha, number of exportable boxes/ha and ratio boxes/bunches in the Toledo banana plantation, Santa Marta, Colombia as an increment in the number of bunches harvested, number of hands per bunch, weight of individual bunches and total number of exportable boxes.

见图4。哥伦比亚圣玛尔塔地区托莱多香蕉种植园每公顷收获蕉串数和出口货箱数和箱串比，收获的蕉串，每串蕉梳数、单串蕉重和总出口货箱数都增多。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。