搜索结果: 1-15 共查到“知识库 till”相关记录49条 . 查询时间(0.031 秒)
Delayed Glyphosate Application for No-Till Fallow in the Driest Region of the Inland Pacific Northwest
Low precipitation zone plant competition soil water storage
2015/12/23
Farmers typically use three applications of glyphosate to control weeds in no-till fallow. Some are now
experimenting with an unconventional modification to this widely used approach. This modi...
Towards a No-Till No-Spray Future? Introduction to a Symposium on Nonchemical Weed Management for Reduced-Tillage Cropping Systems
No-Till No-Spray Future Symposium on Nonchemical Weed
2015/12/23
Reduced-tillage systems including no-tillage and stripillage have well-known benefits for conserving and improving
soils, protecting vulnerable crops from extreme weather
events, and reducing ...
Overcoming Weed Management Challenges in Cover Crop–Based Organic Rotational No-Till Soybean Production in the Eastern United States
Reduced-tillage organic
2015/12/23
Cover crop–based organic rotational no-till soybean production has attracted attention from farmers, researchers, and other
agricultural professionals because of the ability of this new system to enh...
Weed Management Strategies to Reduce Herbicide Use in Zero-Till Rice–Wheat Cropping Systems of the Indo-Gangetic Plains
Crop geometry crop rotation nonchemical approaches planting dates
2015/12/23
In the rice–wheat (RW) systems of the Indo-Gangetic Plains of South Asia, conservation tillage practices, including zerotillage (ZT), are being promoted to address emerging problems such as (1) shorta...
Fake It Till You Make It: Reputation,Competition,and Yelp Review Fraud
Information Competition Internet Ethics Reputation Social and Collaborative Networks
2015/4/28
Consumer reviews are now a part of everyday decision-making. Yet, the credibility of reviews is fundamentally undermined when business-owners commit review fraud, either by leaving positive reviews fo...
Fake It Till You Make It:Reputation,Competition,and Yelp Review Fraud
Information Competition Internet Ethics Reputation Social and Collaborative Networks Retail Industry Food and Beverage Industry
2015/4/27
Consumer reviews are now a part of everyday decision-making. Yet, the credibility of reviews is fundamentally undermined when business-owners commit review fraud, either by leaving positive reviews fo...
Double dating detrital zircons in till from the Ross Embayment, Antarctica
geochronology thermochronology Ross Embayment, Antarctica Antarctica
2015/1/16
U/Pb and (U-Th)/He (ZHe) dating of detrital zircons from glacial till samples in the Ross Embayment, Antarctica records cooling after the Ross/Pan-African orogeny (450-625 Ma) followed by a mid-Jurass...
Biological potential and diffusion limitation of methane oxidation in no-till soils
methane oxidation in no-till soils Biological potential
2015/1/16
Long term no-till (NT) farming can improve the CH4 oxidation capacity of agricultural lands through creation of a favorable soil environment for methanotrophs and diffusive gas transport. However, lim...
ROCK, TILL, AND ICE: A PROVENANCE STUDY OF THE BYRD GLACIER AND THE CENTRAL AND WESTERN ROSS SEA, ANTARCTICA
Glacial Geology Byrd Glacier Ross Sea Provenance
2015/1/16
Petrography of the sand fraction, particle size analysis, and detrital zircon U/Pb isotope data, and pebble count data were collected from Byrd Glacier moraines and central/western Ross Sea till in or...
Geochemistry and Inorganic Carbon Transport of a Glacial Till Drumlin at a Road Salt Facility
carbon dioxide groundwater hydrogeochemistry road salt total dissolved inorganic carbon transport
2014/11/4
Investigations were conducted at a salt/premix storage facility lying on top of a glacial drumlin near the coastline in eastern Massachusetts, to characterize salt contaminated groundwater. Groundwate...
Geochemistry and Inorganic Carbon Transport of a Glacial Till Drumlin at a Road Salt Facility
road salt total dissolved inorganic carbon transport
2014/10/31
Investigations were conducted at a salt/premix storage facility lying on top of a glacial drumlin near the coastline in eastern Massachusetts, to characterize salt contaminated groundwater. Groundwate...
在内蒙古、新疆等大型农场，随着大马力拖拉机的增加，中小型小麦免耕播种机已经不能满足动力发展的需要，限制了保护性耕作的推广实施，急需研究与大马力拖拉机配套的大型免耕播种机。本文设计了2BMG-24型小麦免耕播种机，采用控制式密齿型排种器、波纹圆盘和双圆盘组合式开沟施肥播种单体，实现了精少量排种、破茬开沟和种肥分施的小麦免耕播种。田间试验表明：播种深度合格率为91%；排种均匀性变异系数为28%；种子破...
小麦免耕播种机驱动链式防堵装置设计（Design of the Powered-chain Anti-blocking Mechanism for Wheat No-till Planter）
小麦 免耕播种机 保护性耕作 驱动链式
2009/11/3
针对我国华北一年两熟地区玉米秸秆覆盖量多，小麦免耕播种易堵塞的问题，提出了驱动拨指链抛茬和刀刃型开沟器切茬相结合的新型防堵原理，设计了免耕播种机驱动链式防堵装置。通过分析防堵装置的运动过程，确定了驱动链、拨指和刀刃型开沟器等关键部件的参数。田间试验表明，驱动链式防堵装置能够有效解决秸秆堵塞问题，保证小麦免耕播种机的通过性。由于及时清除刀刃型开沟器前方的玉米秸秆残茬，开沟阻力降低了12.3%。相比条...
玉米垄作免耕播种机油耗试验与分析（Fuel Consumption Test and Analysis for the Ridge-till and No-till Corn Planter）
垄作 保护性耕作 播种机
2009/11/3
保护性耕作技术在我国垄作地区难以推广的主要原因是缺乏在有根茬原垄上确保播种质量的免耕播种机。针对以苗带浅旋处理玉米根茬为机理的2BML-2型垄作免耕播种机，进行了田间油耗试验。试验结果表明：在开沟器、覆土装置、镇压装置等部件工作参数一定时，影响播种机油耗的主要因素中，根茬处理装置的旋耕入土深度影响最大，其次是旋耕幅宽，然后是机组前进速度；在适合范围内，机组前进速度越大，油耗越小；本播种机能有效减少...
Modelling Water Exchange and Transit Times in Till Basins Using Oxygen-18
Water Exchange Transit Times Till Basins Oxygen-18
2009/10/27
The application of hydrological models to data on conservative tracers can
yield information about transit times and storage volumes and may provide an
independent test of the model structure.In thi...