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1.
以湖北省鄂州市鄂城区为例,采用模糊综合评判模型测算了城乡建设用地增减挂钩项目农户参与程度,进而采用有序Logistic回归模型分析了农户参与程度的影响因素。结果显示:增减挂钩项目全过程农户参与程度为0.45,其中,项目立项阶段农户参与程度为0.64,规划设计阶段农户参与程度为0.50,项目施工阶段农户参与程度为0.37,后期管护阶段农户参与程度为0.62。目前增减挂钩项目农户参与程度整体水平一般,不同阶段农户的参与程度有所差异。是否成立了农户质量监督小组、社区干部对增减挂钩态度、是否涉及权属调整、农户参与增减挂钩项目权责的明确程度和是否成立了土地权属调整小组对农户参与程度有显著的正向影响。进而提出如下政策建议:(1)加大增减挂钩的宣传力度,提高农户对增减挂钩政策的认识;(2)完善增减挂钩区域配套设施,促进当地劳动力合理流动;(3)加强农户在施工阶段的参与,提高农户的满意度;(4)政府引导,鼓励农户参与,加强法制建设。  相似文献   

2.
河西走廊农地流转中农户的意愿特征及影响因素   总被引:2,自引:0,他引:2  
为了土地利用率的提高和解放剩余劳动力,运用卡方检验和Logistic模型对河西走廊农地流转中农户的意愿特征及其影响因素进行研究,以期促进河西走廊农业规模化和现代化。研究结果表明:(1)农户具有普遍的农地流转意愿,不同的年龄、性别、文化程度、流转方式对农户流转意愿具有显著差异;(2)农户的年龄和文化程度是影响农户农地流转意愿的主要因素;(3)不同的影响因素的显著性均有差异,家庭状况与资源禀赋对转入及转出影响较大,且两者呈相反趋势;(4)农户个人特征中仅文化程度因子有显著影响,农地的重要性对农户流转的影响非常显著。  相似文献   

3.
农民对参与式水资源管理的认知响应   总被引:1,自引:1,他引:1  
[目的]促进农民充分参与水资源管理,提高管理效率。[方法]以甘肃省高台县农户为对象,运用参与式调查数据,建立结构方程模型,分析农民对参与式水资源管理的认知和响应。[结果]农民的认知程度对其满意程度和参与意愿路径系数分别为0.18(t=4.08)和0.42(t=7.03),满意程度对参与意愿的路径系数为0.45(t=3.86)。(1)农民的认知程度对其满意程度和参与意愿有显著的正面影响,满意程度对参与意愿有显著的正面影响;(2)对认知程度影响最显著的外生结构变量为个人因素,观测变量为自信程度和受教育程度;(3)对影响满意程度影响最显著的外生变量为生产状况,观测变量为耕地面积、农业收入比例、家庭人均纯收入;(4)对参与意愿影响最显著的外生变量为家庭特征,观测变量为家庭人均纯收入。[结论]应加大宣传力度,提高农民认知水平;提高水资源管理效率,增加农民收入和满意程度;建立完善管理制度,为农民参与创造条件。  相似文献   

4.
农户是参与农地流转的主体之一,实现土地合理流转必须以尊重农民意愿为前提。以江汉平原为研究区,运用Logistic二元回归模型对研究区278户农户土地流转意愿的影响因素进行分析,得出以下结论:(1)研究区农户的土地流转意愿较低,流出土地的农户比例为17.99%,流入土地的农户比例为25.17%;(2)影响农户土地流出意愿的主要因素是农地收入功能、外出务工劳动比例和耕地面积,农地收入功能越高,外出务工人数越少,耕地面积越多,农户的土地流出意愿越强;(3)影响农户土地流入意愿的主要因素是户主文化水平、农地政策了解程度、是否具备耕种能力、农地收入功能、耕地质量和村集体经济状况,户主文化水平越高,对农地政策越了解,耕种能力越强,农地收入越高,农户的农地流入意愿越强,而耕地质量越高,村集体经济状况越好,农户的农地流入意愿越弱。  相似文献   

5.
以"保护者受益"原则为基础,从维护和改善农田生态环境角度出发,通过建立不确定状态下政府对农田生态补偿的支付意愿函数和农户对农田生态补偿的受偿意愿函数,得到符合帕累托改进的农田生态补偿标准的取值区间;再以湖北省为例证,利用条件价值法估算农户参与农田生态补偿政策的受偿意愿,分析了影响农户受偿意愿的相关因素。研究结果显示:(1)政府制定的农田生态补偿标准应不低于农户的平均受偿意愿,对应湖北省农田生态补偿标准应不低于5 541.15~6 778.20元/hm2,低于这一标准的农田生态补偿政策在推行过程中不足以对农户形成有效的补偿激励,从而导致整个社会福利水平的损失;(2)受访者家庭农业收入比重、农田生态环境改善的心理期望对于农户参与农田生态补偿政策的受偿意愿具有显著正向影响,而受访者年龄、家庭劳动力比例和家庭承包地流转情况对农户参与农田生态补偿政策的受偿意愿具有显著负向影响。  相似文献   

6.
邓志英  黄毅  魏勇军  王染  黄玉屏  黎博 《土壤通报》2022,53(6):1295-1303
  目的  研究我国农村重金属污染区耕地轮作休耕治理农户参与意愿,分析影响农户参与重金属污染区耕地轮作休耕治理影响因素,为我国重金属污染耕地长期治理的有效实施提供参考依据。  方法  基于343户的调查数据,构建累积logistic回归模型,探究我国重金属污染区耕地轮作休耕治理农户参与意愿及其影响因素。  结果  相比于男性,女性更愿意参与重金属污染轮作休耕治理(?0.1341);农户参与意愿与受教育程度(?0.098)、家庭收入(0.2591)正相关,但与年龄(0.2036)负相关;农户参与意愿与轮作休耕治理政策了解程度(0.3049)、治理过程评价(0.0985)正相关,参与意愿受亲朋好友(?0.1110)影响较大,由于信任度原因现阶段农村基层组织政策宣传对农户参与意愿影响较小;农户参与意愿与轮作休耕后家庭收入变化(0.4851)正相关;农户参与意愿与自有耕地污染程度(?0.3995)负相关,与农户对环境关注度(?0.1953)呈负相关。  结论  农户个体特征及基本情况、参与后的家庭收入变化、耕地污染特征及对环境感知、政策宣讲及实施过程对农户参与意愿具备实质性影响。因此,要提高基层村组在政策宣讲和政策执行过程在农户心中的信任度;提高农业从业人员的受教育水平,降低农业从业人员平均年龄;增加农户家庭收入,拓宽农户收入来源渠道;从环境保护和收入层面加强治理的预期效应宣传,逐步消除农户污染治理与自身收入平衡的矛盾心理。  相似文献   

7.
[目的]研究农地整治项目农户有效参与的影响机理,为政府国土部门制定提高农户有效参与的激励政策提供依据与参考。[方法]运用分位数回归以及反事实分位数分解模型,基于湖北省15个县(市、区)的26个农地整治项目的样本数据,分析农户有效参与的影响机理,同时探究丘陵工程模式区与岗前平原模式区农户有效参与的差异及成因。[结果](1)从整体情况看,参与能力的增强,参与机会的增加,以及参与动力的提升对提高农户有效参与度均有着重要的影响。(2)从不同区域农户有效参与差异来看,由参与能力造成的特征差异解释了农户有效参与度差异的绝大部分,但是由参与机会和参与动力造成的地域系数差异同样农户有效参与中不可忽略的影响因素。[结论]参与能力的增强,参与机会的增加,参与动力的提升对农户有效参与度均有重要的影响;同时政府国土部门应结合不同区域农地整治项目的实际开展情况,有针对性地制定相关激励政策,以期改善各地农地整治项目中农户有效参与的情况。  相似文献   

8.
[目的]剖析粮食生产核心区内不同类型农户参与耕地保护的认知与行为差异,为制定相关差异化政策,引导农户加强对耕地的监督和保护提供支持。[方法]选择粮食生产核心区河南省周口市为样本点,采用分层随机抽样与乡村参与性评估法(PRA)对各类农户参与耕地保护的认知与行为进行调查,运用Logistic回归模型进行影响因素分析。[结果](1)随着受教育程度的提高和兼业程度的加深,各类农户对耕地重要性和多功能性的认识、时间投入偏好、对耕地保护前景的信心、对农业污染的防范都呈现出:缺失型(Ⅰ)基本型(Ⅱ)自然资产型(Ⅲ)人力资产型(Ⅳ),得到补偿后参与意愿、追加补偿到耕地的意愿、定期施用有机肥或采用过测土配方施肥、制止他人破坏耕地的比例都呈现出缺失型(Ⅰ)基本型(Ⅱ)自然资产型(Ⅲ)人力资产型(Ⅳ)。(2)影响各类农户耕地保护行为的因素既存在相同之处也存在各自差异。相同因素包括户主文化程度、投入偏好、补偿意愿。户均年龄高,家庭劳动力少的缺失型农户影响因素还包括户主年龄、务农人数、补偿方式;专门从事农业生产的基本型农户影响因素还包括家庭毛收入、经营土地面积、耕地破碎度;从事短期兼业且非农收入较高的自然资产型农户影响因素还包括非农收入比、粮食种植经济效益、农户兼业;长期居住城镇,较少参与农业生产的人力资产型农户的影响因素还包括耕地经济区位、当期粮食价、政策性补偿方式。[结论]农户作为耕地保护的直接参与者,其认知与行为很大程度决定着耕地保护的成效。  相似文献   

9.
技术感知、环境认知与农业清洁生产技术采纳意愿   总被引:3,自引:0,他引:3  
农业清洁生产技术的推广与采纳对于我国农业可持续发展意义重大,为考察技术感知与环境认知对农户农业清洁生产技术采纳意愿的影响,以中国11省的836份微观农户调查数据为基础,通过应用二元Logistic回归模型,探讨技术感知因素与环境认知因素对农户农业清洁生产技术采纳意愿的影响及其在不同农户群体间的差异性。研究结果表明:1)农户对农业清洁生产技术的感知易用性每降低1个层次,其采纳农业清洁生产技术的概率就会降低5.93%;农户对环境变化的感知程度每提升1个层次,其采纳意愿会提高12.57%。2)"技术感知易用型"农户的采纳意愿主要受到环境变化感知的影响,而"技术感知难用型"农户采纳意愿则主要受到环境变化感知和感知有用性的影响。3)影响"环境变化敏感型"农户采纳意愿的关键因素是感知易用性,而"环境变化滞后型"农户则主要受到年龄、受教育程度、家庭劳动力数量、家庭经营耕地面积的影响。基于上述研究结果,本文认为应对不同类型农户开展有针对性的宣传、教育工作,以提高农户的技术了解程度和环境认知水平,从而推动农业清洁生产技术的推广应用。  相似文献   

10.
水稻优生区农户对耕地实施保护性耕作的决策行为对于水稻产量及品质具有重要影响。本文基于农户资本禀赋视角,将农户资本禀赋分为人力资本禀赋、经济资本禀赋、自然资本禀赋和社会资本禀赋,借助水稻优生区宁夏青铜峡394户农户的微观数据,运用双栏模型将农户参与耕地保护决策行为划分为参与意愿和参与程度两个决策行为阶段,实证分析了水稻优生区农户资本禀赋对其参与耕地保护决策行为的影响,以期为科学制定水稻优生区耕地保护相关政策、保障农业绿色经济发展提供参考和借鉴。研究表明:1)绝大多数农户愿意参加耕地保护行为,但其从事耕地保护的支付意愿相对较低,愿意参加耕地保护的农户占73.86%,而平均支付意愿仅为3 100.65元·hm-2;2)人力资本禀赋(文化程度和农业培训)、经济资本禀赋(家庭收入和农机投入)以及社会资本禀赋(社会关系和社会参与)对农户耕地保护参与意愿和参与程度均为正向影响,自然资本禀赋(耕地禀赋和破碎程度)对农户耕地保护参与意愿有正向影响,对参与程度有负向影响;3)耕地保护重要性认知仅对农户耕地保护参与意愿有促进作用,而耕地保护政策了解程度对农户耕地保护参与意愿和参与程度均有促进作用。最后,提出建立健全耕地保护经济补偿政策、积极组建各类农业合作社和耕地保护组织以及培养新型农民、加大稻作区耕地保护宣传力度等政策建议。  相似文献   

11.
【目的】以富士(Fuji)、 秦冠(Qinguan)嫁接在平邑甜茶(Malus hupehensis Rehd.)上的当年生盆栽苗为试验材料,采用砂培方法,研究了缺氮胁迫和干旱对富士和秦冠生长情况、 光合参数、 植株各部位氮磷钾含量及氮素利用效率的影响,分析比较了低氮干旱条件下富士和秦冠生长及氮素利用的差异,以期为果树生产高效肥水利用提供理论指导。【方法】试验共设四个处理: 正常氮正常水(ZZ)、 低氮正常水(DZ)、 正常氮干旱(ZG)、 低氮干旱(DG)。氮素和水分均设置两个水平,分别为正常氮(6 mmol/L NO-3-N)、 低氮(0.3 mmol/LNO-3-N)、 正常供水(保持盆中砂子相对含水量为饱和含水量的80%~85%)、 干旱处理(保持盆中砂子相对含水量为饱和含水量的60%~65%)。【结果】富士和秦冠的生物量(茎和叶)、 株高茎粗等生长指标以及光合速率、 气孔导度、 蒸腾速率均为正常氮正常水(ZZ)>低氮正常水(DZ)>正常氮干旱(ZG)>低氮干旱(DG),并且相对应处理下秦冠的以上指标均高于富士;正常供水下,缺氮处理使富士、 秦冠的根冠比比正常氮处理均有所增加,富士提高了2.05%,秦冠提高了22.40%。富士和秦冠的氮、 磷、 钾含量均表现出正常氮正常水(ZZ)>低氮正常水(DZ)>正常氮干旱(ZG)>低氮干旱(DG); 氮、 钾元素含量在植株各部位的分布顺序依次是叶>根>茎,磷元素则是根>叶>茎;光合氮素利用效率(PNUE)和氮素利用效率表现为秦冠处理之间差异极显著,富士处理之间差异不显著;秦冠的PNUE和NUE明显高于富士,在低氮正常水(DZ)处理下,秦冠氮肥利用率比富士高42.07%,在低氮干旱(DG)处理下高64.14%;低氮胁迫下富士和秦冠的NUE显著提高,并且秦冠提高的幅度高于富士。【结论】施用氮肥能够显著提高富士与秦冠的干物质量,同等水肥条件下,秦冠生长优于富士;水分亏缺会减少叶片对氮的吸收,干旱条件下适度增施氮肥,可提高果树的抗旱能力;低氮干旱胁迫下秦冠的生长指标、 光合指标及氮素利用效率指标均优于富士,表现出较强的抗低氮干旱胁迫的能力。  相似文献   

12.
Laser-induced breakdown spectroscopy (LIBS) is a new technique for the analysis of plant material. This study investigates the application of LIBS to pasture-based plant samples. The LIBS measurements were obtained from pelletized pasture samples (100 samples) that had been also analyzed by inductively coupled plasma–optical emission spectroscopy (ICP-OES) following microwave digestion for calibration and comparison purposes. Comparisons for elements sodium (Na), potassium (K), magnesium (Mg), calcium (Ca), manganese (Mn), iron (Fe), copper (Cu), zinc (Zn), boron (B), phosphorus (P), and sulfur (S) showed that LIBS could be used for almost all the standard profile total elements with concentrations down to low mg/kg levels (observed error of Na: 0.024 percent, K: 0.18 percent, Mg: 0.016 percent, Ca: 0.073 percent, P: 0.017 percent, Mn: 31 mg/kg, Fe: 150 mg/kg, Zn: 6.6 mg/kg, and B: 1.1 mg/kg). Elemental analysis at less than mg/kg levels was not possible using LIBS. The elements S and Cu were particularly difficult to analyze with reliability using LIBS at the concentration levels found in the plant samples. Replacing microwave digestion and subsequent ICP analysis with a direct analysis of dried plant samples using LIBS has the potential to improve the productivity and reduce the cost of testing.  相似文献   

13.
正The Center for Agricultural Resources Research(CARR),the Institute of Genetics and Developmental Biology(IGDB),Chinese Academy of Sciences,invites applicants for several research group leader positions.CARR is one of the research organizations in Chinese Academy of Sciences(CAS).We seek nominations and applications from individuals who have expertise and a record of accomplishment in research areas related to ecology,agro-hydrology,  相似文献   

14.
The responses of tallgrass prairie plant communities and ecosystem processes to fire and grazing are well characterized. However, responses of invertebrate consumer groups, and particularly soil-dwelling organisms, to these disturbances are not well known. At Konza Prairie Biological Station, we sampled soil macroinvertebrates in 1994 and 1999 as part of a long-term experiment designed to examine the effects and interactions of annual fire, mowing, and fertilization (N and P) on prairie soil communities and processes. For nearly all taxa, in both years, responses were characterized by significant treatment interactions, but some general patterns were evident. Introduced European earthworms (Aporrectodea spp. and Octolasion spp.) were most abundant in plots where fire was excluded, and the proportion of the total earthworm community consisting of introduced earthworms was greater in unburned, unmowed, and fertilized plots. Nymphs of two Cicada genera were collected (Cicadetta spp. and Tibicen spp.). Cicadetta nymphs were more abundant in burned plots, but mowing reduced their abundance. Tibicen nymphs were collected almost exclusively from unburned plots. Treatment effects on herbivorous beetle larvae (Scarabaeidae, Elateridae, and Curculionidae) were variable, but nutrient additions (N or P) usually resulted in greater densities, whereas mowing usually resulted in lower densities. Our results suggest that departures from historical disturbance regimes (i.e. frequent fire and grazing) may render soils more susceptible to increased numbers of European earthworms, and that interactions between fire, aboveground biomass removal, and vegetation responses affect the structure and composition of invertebrate communities in tallgrass prairie soils.  相似文献   

15.
Abstract

A 3-year study was carried out to investigate quality parameters in 14 tree fruit and berry species grown in southern Norway. The species were blueberry, apple, aronia, sour cherry, sweet cherry, red raspberry, strawberry, blackcurrant, gooseberry, red currant and elderberry, harvested along with wild bilberry, cloudberry and lingonberry. Significant differences between species were identified for all quality parameters. The coefficient of variation between species was lowest for pH (12.5%), dry matter (18.9%) and soluble solids (25.3%), followed by titratable acids (59.3%), total phenolics (83.8%), antioxidant capacity FRAP (85.7%) and antiradical power by the DPPH-assay (97.8%), total monomeric anthocyanins (132%) and ascorbic acid (137%). Average coefficient of variation within species were lower and ranged from 4 (pH) to 62% (ascorbic acid). Only the FRAP values were significantly affected by harvesting year with lower levels in 2004 than in 2005 and 2006. There were significant interactions between species and harvesting year for dry matter, soluble solids, pH, ascorbic acid and FRAP. The results indicate generic ranges in composition within species independent upon growing location and climate, and the composition of the tree fruits and berries is not likely to deviate from these ranges. It is concluded that desirable composition of tree fruits and berries and their products should primarily be achieved by selection among species rather than searching fors broadened variation within individual species.  相似文献   

16.
Potassium (K) fixation and release in soil are important factors in the long-term sustainability of a cropping system. Changes in K concentration and characteristics of K fixation and release in rhizosphere and nonrhizosphere soils in the rapeseed (Brassica napus L.)–rice (Oryza sativa L.) rotation were investigated using a rhizobox system. The concentrations of different forms of K in both rhizosphere and nonrhizosphere soils decreased with plants compared to without plants, regardless of K fertilizer application. Potassium uptake by crops mainly came from the rhizosphere soil. In the treatment without K fertilizer (–K), the main form of K supplied by the soil to the crops was 1.0 mol L?1 nitric acid (HNO3) nonextractable K, followed by nonexchangeable K, and then exchangeable K. In the treatment with K fertilizer (+K), the main K forms supplied by the soil to the crops were exchangeable K and nonexchangeable K. The amount and rate of K fixation after one cycle of the rapeseed–rice rotation was greater in rhizosphere soil than in nonrhizosphere soil. The amount and rate of K fixation of soil in the +K treatment were significantly less than in the –K treatment. The cumulative amounts of K released with 1.0 mol L?1 ammonium acetate (NH4OAc) and 1.0 mol L?1 HNO3 extraction increased with the increasing numbers of extractions, but the K-releasing power of soil by successive extraction decreased gradually and finally became almost constant. The release of K was less in rhizosphere soil than in nonrhizosphere soil. The release of K in the +K treatment was similar to that in the –K treatment in rhizosphere soil, but the K release in nonrhizosphere soil was greater with the +K than the –K treatment. Overall, the information obtained in this study will be helpful in formulating more precise K fertilizer recommendations for certain soils.  相似文献   

17.
Biologically enhanced dissolution offers a method to speed removal of chlorinated solvent dense non-aqueous-phase liquid (DNAPL) sources such as tetrachloroethene (PCE) and trichoroethene (TCE) from aquifers. Bioremediation is accomplished by adding an electron donor to the source zone where fermentation to intermediates leading to acetic acid and hydrogen results. The hydrogen and possibly acetic acid are used by dehalogenating bacteria to convert PCE and TCE to ethene and hydrochloric acid. Reductive dehalogenation is thus an acid forming process, and sufficient alkalinity must be present to maintain a near neutral pH. The bicarbonate alkalinity required to maintain pH above 6.5 is a function of the electron donor: 800 mg/L of bicarbonate alkalinity is sufficient to achieve about 1.2 mM TCE dechlorination with glucose, 1.7 mM with lactate, and a much higher 3.3 mM with formate. Laboratory studies indicate that in mixed culture, formate can be used as an electron donor for complete conversion to ethene, contrary to pure cultures studies indicating it cannot. Various strategies can be used to add electron donor to an aquifer for DNAPL dehalogenation while minimizing pH problems and excessive electron donor usage, including use of injection-extraction wells, dual recirculation wells, and nested injection-extraction wells.  相似文献   

18.
Staff members of the Department of Botany of Palacký University in Olomouc and Gene Bank Department – Workplace Olomouc, Research Institute of Crop Production in Prague, Czech Republic, conducted an expedition in seven European countries (Austria, Czech Republic, France, Germany, Italy, the Netherlands, Switzerland) in August/September 1999 to collect wild Lactuca spp. germplasm and study its geographic distribution, ecology and biodiversity. During the mission, more than 600 locations were visited resulting in the collection of 602 seed samples (accessions) of wild Lactuca species and 13 seed samples of related genera (Chondrilla and Mycelis). Lactuca serriola f. serriola, L. serriola f. integrifolia, L. saligna and L. viminea subsp. chondrilliflora were prevalent in southern Europe (Italy, France), however, only L. serriola was common in central and western Europe (Austria, Czech Republic, Germany, Netherlands, Switzerland). The greatest diversity of Lactuca species was found in France, where also the most seed samples (165) were collected. The most characteristic habitats with a high density of Lactuca spp. populations were observed along roads and highways, grassy ditches, ruderal communities, and dust-heaps. Natural infections by powdery mildew (Erysiphe cichoracearum) and downy mildew (Bremia lactucae) on some wild Lactuca spp. were observed. Recent observations concerning the geographic distribution, population structure, habitats, and natural occurrence of diseases of Lactuca spp. are discussed. This assemblage of genetic resources of Lactuca spp. can serve as the basis of future studies of species diversification, spatial population structure, plant microevolution, domestication processes, and genetic variability of host-parasite interactions.  相似文献   

19.
Inoculation of wheat seedlings with the plant growth-promoting bacterium Azospirillum brasilense Cd was immobilized in alginate microbeads and, without applying any stress, significantly increased the quantity of several photosynthetic pigments, such as chlorophyll a, chlorophyll b, and the auxiliary photoprotective pigments violaxanthin, zeaxanthin, antheroxanthin, lutein, neoxanthin, and β-carotene. This resulted in greener plants with no apparent visible stress. After monitoring the quantity of photosynthetic pigments for 4 weeks, we observed that inoculated plants had higher quantities of pigments in shoot and stem. The greatest difference in the quantity of all pigments between inoculated and noninoculated plants occurred in the first week of growth. Regardless of treatment, the quantity of pigments in stems was three to four times less than the quantity of these pigments in shoots. Application of Azospirillum, either as liquid inoculant or as alginate microbeads, did not alter the positive effect of the bacteria on pigment production or the positive response of the plants towards A. brasilense Cd inoculation.  相似文献   

20.
Three slow-growing legume trees used for desert reforestation and urban gardening in the Sonoran Desert of Northwestern Mexico and the Southwestern USA were evaluated whether their growth can be promoted by inoculation with plant growth-promoting bacteria (Azospirillum brasilense and Bacillus pumilus), unidentified arbuscular mycorrhizal (AM) fungi (mainly Glomus sp.), and supplementation with common compost under regular screenhouse cultivation common to these trees in nurseries. Mesquite amargo (Prosopis articulata) and yellow palo verde (Parkinsonia microphylla) had different positive responses to several of the parameters tested while blue palo verde (Parkinsonia florida) did not respond. Survival of all tree species was over 80% and survival of mesquite was almost 100% after 10 months of cultivation. Inoculation with growth-promoting microorganisms induced significant effects on the leaf gas exchange of these trees, measured as transpiration and diffusive resistance, when these trees were cultivated without water restrictions.  相似文献   

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