Networking Forests and Water areas：Urban Forest Development in China

With rapid urbanization inChina, cities/towns continueto expand in size, ecological and environmentalproblems emerging during the process of urbanizationare becoming increasinglyevident.Urbanization movesforward rapidly, and any mistake in the design ofurban development would cause irreversible loss tothe country because of large investment in urbanenvironment development. According to the currentstatus of urban environment development in China,the available technical resources are far from me…     

牧区农民农业保险参保意愿调查及对策——以内蒙古兴安盟为例

基于对内蒙古少数民族的地区进行的实地调查,从经济学角度对农户参保意愿进行了分析,发现牧区农业保险存在的主要问题是:农民对保险机构及其产品缺乏了解和信任;政策性保险的保障程度偏低,区域分配不合理;政府救济降低了农民对农业保险的需求。并据此从农业保险的宣传、实施、组织形式及政策制度等方面提出了提高牧区农民参保意愿的对策建议。     

“互联网+”背景下近郊香椿产业的发展路径分析

借鉴在产业发展战略领域广泛使用的SWOT分析法,分析了近郊农业发展香椿产业的优势、劣势、机遇、挑战。认为近郊农区应以香椿的文化情怀、绿色特性和保健功效为突破口,借助互联网和大数据工具精准定位目标消费人群,丰富香椿营销的手段,在种植、贮藏、加工等环节利用科技手段打造立体的现代香椿产业格局,从而促进香椿产业的进一步发展。     

宁夏农村饮用水安全存在的问题及对策

分析了宁夏农村饮用水安全存在的问题,切合实际提出了解决宁夏农村饮用水安全问题的对策。     

水土流失对农村贫困的影响

概述了我国农村贫困的总体状况及地区差异,指出水土流失较为严重的中西部地区农村的贫困状况表现尤甚。结合前人研究,以农业GDP为因变量,以耕地面积、农业劳动力、农业资本存量、灌溉面积、化肥用量等为自变量,建立了反映水土流失对农村贫困影响的C-D生产函数进行回归分析。结果表明,耕地、劳动力、资本、灌溉、化肥等生产要素对农业GDP有正效应,水土流失对农业生产有显著的负效应;我国西部的全要素生产力最低,水土流失也最为严重。为走出水土流失与农村贫困的双重困境,必须改变粗放的农业发展方式,保护生态环境,走农业生态集约发展之路。     

Seed Health Status of Sweet Corn (Zea mays L. saccharata Sturt) from Five Areas in China and Effect on Field Seedling Emergence

The health status of 18 sweet corn (Zea mays L. saccharata Sturt) hybrids classified to two types, collected from five areas in China, was examined by PDA method, and factors influencing seed health and relationships between seed health and field seedling emergence were studied. Seventeen fungal genera were isolated and Fusarium was the most frequently isolated. There were significant differences both in incidence of Fusarium and in percentage of infected seeds among 18hybrids. Research also showed that significant and consistent differences both in seed-borne fungal taxa and in percentage of infected seeds existed between two types of sweet corn. Sugar enhanced corn is more slightly infected than super sweet corn both in fungal taxa (13 and 16, respectively) and in percentage of infected seeds (62.0 and 79.2%, respectively).There were also significant differences both in seed-borne fungal taxa and in percentage of infected seeds among five areas. Seeds from South China were most severely infected, for there were 14 fungal genera detected and the percentage of infected seeds was highly 99.1% while those from Northwest China were slightly infected, for there were 10 fungal genera detected and the percentage of infected seeds was only 14.3%. Further research showed that there were significant negative correlations both between incidence of Fusarium and percentage of field seedling emergence and between percentage of infected seeds and percentage of field seedling emergence. Percentage of field seedling emergence could be estimated by regression equations built by regression analysis.     

贵州城乡收入差距的现状·演变轨迹及其原因解析——兼论贵州与全国农村居民的收入差距

为了揭示1978～2006年期间贵州城乡居民收入差距以及贵州与全国农村居民收入差距总体上不断扩大和2006年之后差距开始趋向缩小的内在原因,笔者对贵州农村居民人均纯收入的构成进行分析,并提出相应的对策,为提高贵州城乡居民收入研究作参考。结果表明:贵州农村居民人均纯收入低,主要表现为工资性收入低和家庭经营收入的农业收入低,这与滞后的工业化、城市化以及生态环境脆弱的地理环境是分不开的。     

霜冻天气对桂中地区主栽甘蔗品种生长及蔗糖分的影响

2008年初广西各蔗区甘蔗均遭受严重的寒害冻害,研究霜冻天气对主栽甘蔗品种生长及蔗糖分的影响对确保甘蔗持续生产,选育抗寒甘蔗品种具有重要意义。2009年1月霜冻天气对桂中地区主栽甘蔗品种生长及蔗糖分影响的研究结果表明,这次霜冻天气后甘蔗的受冻害症状明显,蔗糖分下降了0．21％-0．48％（绝对值）,宿根蔗蔗糖分的降幅较新植蔗大;简纯度下降了0．37％～1．48％（绝对值）,新植蔗的降幅较宿根蔗大。     

攀枝花市植烟土壤养分状况评价

为了查明攀枝花烟区土壤养分特征,对该烟区750份耕层土壤样品进行了分析。结果表明,攀枝花市绝大部分植烟土壤酸碱度适合烤烟种植,有机质总体较缺乏,土壤供氮水平较高,大部分植烟土壤碳氮比偏低,土壤碱解氮、速效磷、速效钾含量总体适中,但变异系数大,有44.26%的土壤碱解氮含量偏低,32.13%的土壤速效磷缺乏,56.27%土壤速效钾缺乏。仁和区植烟土壤以及低海拔烟区土壤相对较贫瘠。     

青海省农村可再生能源发展研究

农村可再生能源是农村环境保护和持续发展的重要内容,同时也是农村经济发展的物质基础。基于青海省农村可再生能源利用现状及存在问题的分析,提出了调整农村用能结构、采用劳动力节约型技术、加强农村可再生能源服务体系的建设、建立有效的配套政策和相应的激励机制等促进青海省农村可再生能源发展的策略性建议。