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Is Nitrogen the New Carbon?
Nitrogen the New Carbon
2009/12/16
In looking forward to the next Green Revolution, researchers have been carefully examining the role of nitrogen fixation in delivering successful crops around the globe.
2009年9月16－17日，中国科学院计划财务局会同资源环境科学与技术局、生命科学与生物技术局、黑龙江省科技厅组织专家组对中国科学院东北地理与农业生态研究所承担的中国科学院知识创新工程 “耕地保育与持续高效现代农业试点工程”重大农业基地项目之“黑土退化阻控与保护技术体系”和“东北地区粮食核心产区建设与可持续增粮战略研究”课题进行了中期现场评估。
烟草需水规律研究进展
烟草 需水量 生育期 土壤含水量
2015/8/26
烟草生长与水分关系以及灌溉调控技术是目前烟草需水方面的研究重点,为烟草生产灌溉提供了重要的理论基础.从烟草需水研究方法、影响因素、不同生育期需水动态规律等方面综述了国内外烟草需水规律研究进展,并展望了今后一定时期的研究方向,指出应探索新研究方法,进行不同生态类型大田实际情况下烟草需水规律研究,提高我国烟叶的产量和质量.
Relationship Between Growth, Yield and Storability of Onion (Allium Cepa L.) With Fertilization of Nitrogen, Sulphur and Copper under Calcareous Soil Conditions
Onion nitrogen sulphur vegetative growth dry weight bulbing ratio marketable yield
2010/11/12
This work was carried out during the winter seasons of 2005/2006 and 2006/2007 at The
Experimental Farm of Environ. Agric. Sci. Fac., El-Arish, North Sinai, to study the effect of nitrogen levels (N)...
The Procedure of Arable Land Classification on the Basis of Landscape Ecological Factors
Arable land classification Land use Landscape ecology Mesh data Multiple regression analysis
2009/8/6
In order to develop the procedure of arable land classification, we forced to adopt the viewpoint of landscape ecological classification depending on the analogy of topographic and edaphic factors, n...
不同施肥和耕作制度下土壤微生物多样性研究进展
土壤 微生物多样性 施肥 耕作
2012/3/28
本文主要介绍了运用Biolog GN、 磷脂脂肪酸（PLFA）、核酸分析法进行土壤微生物群落分析的优缺点， 综述了施肥、耕作两种农业措施对土壤微生物多样性影响的研究进展。指出不同施肥处理对微生物影响效果不同，合理施用有机肥有利于维持土壤微生物的多样性及活性； 由于受其他环境因素（如土壤类型、农作制度、残茬量等）的影响，不同耕作措施对土壤微生物多样性影响有差异，但是大多试验结果显示免耕、少耕能增加微...
The prospect of labor saving managements in the large-scale upland farming
labor saving managements large-scale upland farming
2009/7/31
The prospect of labor saving managements in the large-scale upland farming.
Effects of Soil Clay Content on Water Balance and Productivity in Rainfed Lowland Rice Ecosystem in Northeast Thailand
Oryza sativa Paddy Percolation Seepage Water table
2009/7/23
Water availability is one of the determinants of productivity of rainfed lowland rice (Oryza sativa L.). Quantifying water losses from a paddy field, such as deep percolation and lateral seepage, assi...
Village-Level Studies on Rice-Based Cropping Systems in the Low-Lying Areas of Bangladesh : II. Toposequence, hydrology, land classification and cropping patterns in the Bogra District of the Barind Tract
Bangladesh Cropping pattern Land classification Multiple cropping Shallow tube-well irrigation
2009/7/22
An intensive village-level survey on the change of land use and cropping systems was conducted in the village of Aira (Bogra District of the Barind Tract, a Pleistocene terrace) from the Aman season 1...
跨省域耕地占补平衡的利弊分析
跨省域耕地占补平衡 利弊 耕地
2009/7/21
介绍了跨省域耕地占补平衡的由来, 从占用耕地方、补充耕地方及全国的角度分析了跨省域耕地占补平衡的利弊, 提出了协调经
济发展与耕地保护关系的相关建议。
保护性耕作下农田土壤风蚀量及其影响因子的研究初报
保护性耕作 土壤风蚀量 覆盖率 影响因子
2009/7/20
本研究采用移动式风洞仪对北京市保护性耕作下农田土壤风蚀影响进行研究，并得出以下初步结论：（1）六种地块下土壤风蚀量以裸露翻旋地最高，种植越冬覆盖作物能显著降低土壤风蚀量；不同免耕播种机和秸秆处理方式下，风蚀量区别主要在于播种机，以迪尔风蚀量最低，农哈哈机型最高；四种耕作方式下土壤风蚀量以旋耕地最高，翻耕地比旋耕地降低80.81%，重耙和免耕地风蚀量分别比旋耕地降低95.35%和97.71%；冬小麦...
2009年7月15日上午8时，由我校资环学院主办的高产高效“土壤-作物系统综合管理”理论与技术研讨会在青岛召开，国内农学、植物营养学、土壤学及气象学等相关学科“973项目”负责人、著名专家、学术带头人共计200余名代表应邀展开为期3天的学术活动。
以案例的形式分析如何应用灰色关联度法进行耕地定级评价。结果表明，研究区丰顺县耕地质量总体一般，质量最优的1级耕地以及较次之的2、3、4级耕地质量面积依次占全县耕地总面积的17.06%、39.11%、31.62%、12.21%。同时，应用层次聚类法对耕地定级划分结果的合理性进行了检验，检验结果显示全县耕地面积和耕地定级评价单元数划分的正确率分别达到87.68%、87.17%。
Water Status Measurements in Soil and Roots, Leaves and Stems or Crop Plants
Water Status Measurements Soil and Roots Leaves Stems
2009/7/14
Water Status Measurements in Soil and Roots, Leaves and Stems or Crop Plants.
Sustainable Soil Managements in Intensive Crop Cultivation:Organic matter supply and cropping system
IN JAPANESE IN JAPANESE IN JAPANESE IN JAPANESE IN JAPANESE IN JAPANESE IN JAPANESE
2009/7/14
Sustainable Soil Managements in Intensive Crop Cultivation : Organic matter supply and cropping system.