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基于农户流转意愿的农村宅基地市场化发展潜力研究——以山东省禹城市为例 被引量:1
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作者 陈会广 刘林 +2 位作者 孔冬艳 孙雨婷 李丽 《土地经济研究》 2019年第1期41-62,共22页
闲置宅基地的流转是助推乡村振兴战略实施、实现生态宜居的主要路径。假设农户与村组集体的理性预期一致,宅基地流转意愿在一个集体经济组织内部就可以汇总成市场化发展潜力。在此假设基础上,构建农户流转意愿与村级宅基地市场化发展潜... 闲置宅基地的流转是助推乡村振兴战略实施、实现生态宜居的主要路径。假设农户与村组集体的理性预期一致,宅基地流转意愿在一个集体经济组织内部就可以汇总成市场化发展潜力。在此假设基础上,构建农户流转意愿与村级宅基地市场化发展潜力关系的理论框架,运用二元logistic模型与灰色聚类分析相结合的方法揭示二者的关系,并以禹城市2镇4村为例,从农户意愿角度考察了宅基地流转的微观动力,从中筛选出村级市场化发展潜力评价指标,评价了宅基地市场发育程度。结果表明,家庭规模、外出务工人口比例、家庭人均年收入、人均建筑面积、宅基地空置情况对农户宅基地流转意愿有显著影响,但上述影响显著的变量在同一区域的不同村庄又会显示出不同的绩效,反映宅基地市场发育程度的差异,由此不同村庄的宅基地市场化发展潜力呈现出弱市场、转型中期、转型后期、相对成熟期等不同阶段性和形态。目前牌子村、东于场村、郎屯村、丁刘袁村宅基地市场发育分别处于相对成熟、转型后期、转型中期与弱市场阶段。最后,从宅基地市场化的理性预期一致性、阶段性、异质性三个方面的重点问题出发,进一步讨论了农户宅基地流转意愿与宅基地市场发育程度之间的内在逻辑,以及可能的改革行动方向。 展开更多
关键词 农户 宅基地 流转意愿 市场化 发展潜力
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Chalkiness Characters and Scanning Electron Microscope Observation of Rice Grain Endosperm of Japonica Varieties in Southern Henan 被引量:5
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作者 Bo PENG Yanfang SUN +8 位作者 dongyan kong Ruihua PANG Xiaohua SONG Huilong LI Jintao LI Qiying ZHOU Qiu HAN Shizhi SONG Hongyu YUAN 《Asian Agricultural Research》 2017年第3期80-85,共6页
Chalkiness characters affect not only the grain appearance,milling,eating and cooking qualities but also the grain nutritional quality in rice,thus it is one of the most important traits in rice. It is very important ... Chalkiness characters affect not only the grain appearance,milling,eating and cooking qualities but also the grain nutritional quality in rice,thus it is one of the most important traits in rice. It is very important for us to investigate the relation of the chalkiness formation and the development of endosperm structure and starch granule of different rice varieties. Here,we have investigated the chalkiness characters such as chalkiness rate,chalkiness degree and chalkiness area in 15 japonica rice varieties from southern Henan. Furthermore,the endosperm structure and starch granules of rice grain were also observed with scanning electron microscope. The results showed that the 15 japonica varieties have a significantly linear relationship between the chalkiness rate and chalkiness degree. Among the varieties,the biggest difference is the chalkiness rate,the second is the chalkiness area,and the last is the chalkiness degree. Moreover,there is a certain correlation between the distribution of starch granules,the arrangement of endosperm cells and the occurrence of grain chalkiness in the different rice varieties. For the same variety,the starch granules of chalky and non-chalky grains have obvious difference,while the starch granules from the transparent part of chalky rice and non-chalky rice do not have significant difference. The results would provide useful references for the improvement of grain quality in rice. 展开更多
关键词 CHALKINESS Scanning electron microscope Japonica rice Starch granule ENDOSPERM
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A Method for Detection of Main Metabolites in Aromatic Rice Seeds 被引量:7
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作者 Bo PENG dongyan kong +12 位作者 Xiaohua SONG Huilong LI Lulu HE Andong GONG Yanfang SUN Ruihua PANG Lin LIU Jintao LI Qiying ZHOU Yaqin HUANG Bin DUAN Shizhi SONG Hongyu YUAN 《Agricultural Biotechnology》 CAS 2018年第1期112-116,共5页
[ Objective] A method was developed for the analysis of main metabolites in aromatic rice seeds by gas chromatography-mass spectrometry (GC-MS). [ Method] The main metabolites in seeds of 9 different aromatic rice v... [ Objective] A method was developed for the analysis of main metabolites in aromatic rice seeds by gas chromatography-mass spectrometry (GC-MS). [ Method] The main metabolites in seeds of 9 different aromatic rice varieties were compared and analyzed with two methods. Method 1 : the compound was extracted by the mixture of anhydrous ethanol and methylene chloride ( WV = 1:1 ) at 60 ℃ for 3 h in water bath; the extract was isolated and detected by gas chromatography-mass spectrometry using HP-5 capillary column with scan monitoring mode. Method 2: the main metabolites in aromatic rice seeds were detected using headspaee solid phase micro-extraction and gas chromatography mass spectrometry (GC-MS). [ Result ] Fifteen types of common metabolites were found in 9 different aromatic rice varieties. Method 1 was more effective than method 2 in detecting the main metabolites in aromatic rice seeds. [ Conclusion] This study provides an important reference for clarifying the metabolic pathway of main metabolites in aromatic rice and lays the foundation for further rice breeding. 展开更多
关键词 Aromatic flee SEED METHOD METABOLITES GC-MS
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农村土地整治社会稳定风险评估研究进展与展望 被引量:1
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作者 高连辉 陈会广 +1 位作者 孔冬艳 杨兴典 《土地经济研究》 2019年第2期123-153,共31页
土地整治是乡村振兴的重要抓手,其政策制定和项目实施关系到农民利益,因而建立健全土地整治社会稳定风险评估体系尤为重要。跟踪农村土地整治社会稳定风险评估研究进展,在理论与经验上有助于建立健全风险评估体系。利用文献计量法和Cite... 土地整治是乡村振兴的重要抓手,其政策制定和项目实施关系到农民利益,因而建立健全土地整治社会稳定风险评估体系尤为重要。跟踪农村土地整治社会稳定风险评估研究进展,在理论与经验上有助于建立健全风险评估体系。利用文献计量法和CiteSpace可视化分析对国内外土地整治社会稳定风险评估相关研究文献进行全面梳理,系统分析评估对象、内容、方法和结果等方面的研究现状。文献梳理发现,国内农村土地整治方面的研究开始于20世纪90年代末的经济快速发展背景,土地整治对经济快速发展引致的与耕地资源保护的不协调作出了相应响应,围绕耕地占补平衡开展了土地开发复垦整理。在社会稳定风险评估上,国际的文献主要关注典型区域的土地整理研究,侧重与生态结合的评估研究。而国内现有农村土地整治社会稳定风险评估主要针对中国中、东部各省典型土地整治工程,应用定性和定量相结合的研究方法,从经济、社会、环境与制度的单因子或多因子等不同研究视角对土地整治社会风险进行了全面考察。总的来说,农村土地整治社会风险的评估结果受研究的数据来源、评估方法和项目建设过程中公众参与程度等的影响。村民心理因素变化不容忽视,项目区村民的认知力和心理承受力对农村土地整治社会稳定风险的评估结果也具有重要影响。推动第三方评估主体市场的发展,尤其注重对项目区经济、生态环境及群众意愿与心理因素等方面具体指标的深入调研,依托于项目区的真实情境,选取恰当的指标和方法对土地整治政策的制定及其实施过程进行全程评估,基于情境的机器学习、仿真模拟与智能化是今后农村土地整治社会稳定风险评估进一步研究与应用的方向。 展开更多
关键词 土地整治 社会稳定风险 评估 文献计量学 CiteSpace可视化
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Genetic Analysis and Improvement Strategies of Protein Content in Rice Seeds 被引量:1
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作者 Bo PENG Yanfang SUN +13 位作者 dongyan kong Ruihua PANG Xiaohua SONG Huilong LI Lin LIU Xian-wen LI Jintao LI Qiying ZHOU Bin DUAN Huihui LIU Yuhan ZUO Yanlin HAO Shizhi SONG Hongyu YUAN 《Agricultural Biotechnology》 CAS 2017年第4期10-14,共5页
Enhancing the nutritional quality of food crops is a way to improve human nutrition and health. Grain protein content ( GPC ) is an important nutritional quality trait for rice and many other crops. Therefore, it wi... Enhancing the nutritional quality of food crops is a way to improve human nutrition and health. Grain protein content ( GPC ) is an important nutritional quality trait for rice and many other crops. Therefore, it will be very significant to increase GPC and improve rice quality. This paper mainly reviewed the genetic studies GPC in rice, mapping and cloning of QTLs and genes associated with GPC. However, little is known about the molecular mechanism and gene function related to GPC in rice. Thus, here we put forward the genetic strategy by gene pyramiding or molecular marker assisted selection to improve GPC and nutritional quality in rice. This review could provide important information for genetic improvement of grain nutritional quality of rice. 展开更多
关键词 RICE Grain protein content Improvement strategy QTL mapping Gene cloning
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Expression and Regulation of Plant Amino Acid Transporters and Their Application in Crop Genetic Improvement
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作者 Bo PENG dongyan kong +15 位作者 Lulu HE Yu PENG Juan PENG Qingqing XIN Xiaohua SONG Yuchen LIU Yanfang SUN Ruihua PANG Huilong LI Guiying GUO Jintiao LI Quanxiu WANG Qiying ZHOU Shizhi SONG Bin DUAN Hongyu YUAN 《Agricultural Biotechnology》 CAS 2019年第1期5-9,共5页
Amino acid transporters( AATs) play an important role in transport process of various amino acids,which are indispensable in plant growth and development,while many putative AATs have been identified and the complete ... Amino acid transporters( AATs) play an important role in transport process of various amino acids,which are indispensable in plant growth and development,while many putative AATs have been identified and the complete genomic sequences of the important plants have already been completed by splicing and assembling. There is still little knowledge about the expression,regulation and various biological functions of AATs in plants,including the major food crops. This study mainly reviewed the expression,regulation and various biological functions of AATs in plants,and the application of AATs in crop genetic improvement was also prospected. Thus,this review will provide important information for genetic improvement of staple food crops in plants. 展开更多
关键词 AATs EXPRESSION REGULATION FUNCTION APPLICATION
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Expression Regulation of Starch and Storage Protein Synthesis Related Genes in Rice Grains
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作者 Bo PENG dongyan kong +18 位作者 Yu PENG Lulu HE Yue JIANG Jingbo YU Mengshi SUN Qin DAI Yuchen LIU Qingqing XIN Ruihua PANG Yanfang SUN Xiaohua SONG Huilong LI Juan PENG Qiying ZHOU Jintao LI Quanxiu WANG Bin DUAN Shizhi SONG Hongyu YUAN 《Asian Agricultural Research》 2019年第1期47-53,共7页
Starch and the storage proteins are the main nutritious substances in crop grains,and their composition and content in grains play a decisive role in the grain quality of rice and other staple food crops.This review h... Starch and the storage proteins are the main nutritious substances in crop grains,and their composition and content in grains play a decisive role in the grain quality of rice and other staple food crops.This review has mainly summarized the new advances in the expression regulation of starch and storage protein synthesis related genes in rice grains.Moreover,the challenges of the starch and storage protein synthesis substances in rice genetic improvement were also discussed.This review will provide important information for genetic improvement of grain quality in rice and,potentially,other staple cereals. 展开更多
关键词 RICE STARCH Storage PROTEIN SYNTHESIS Gene Expression REGULATION
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