نتایج جستجو برای: planting distribution

تعداد نتایج: 621359  

2016
Chengyue Bian Changjian Ma Xinhui Liu Chao Gao Quanru Liu Zhenxing Yan Yujie Ren Quanqi Li

A suitable planting pattern and irrigation strategy are essential for optimizing winter wheat yield and water use efficiency (WUE). The study aimed to evaluate the impact of planting pattern and irrigation frequency on grain yield and WUE of winter wheat. During the 2013-2014 and 2014-2015 winter wheat growing seasons in the North China Plain, the effects of planting patterns and irrigation fre...

2014
ANDREW LOVETT

This paper defines the potentially available land for perennial energy crops across Great Britain as the first component of a broader appraisal undertaken by the ‘Spatial Modelling of Bioenergy in Great Britain to 2050’ project. Combining data on seven primary constraints in a GIS reduced the available area to just over 9 M ha (40% of GB). Adding other restrictions based on land cover naturalne...

Journal: :Journal of the Japanese Institute of Landscape Architects 1963

2010
William J. Sacks Delphine Deryng Jonathan A. Foley Navin Ramankutty

Results We present global planting date patterns for maize, spring wheat and winter wheat (our full, publicly available data set contains planting and harvesting dates for 19 major crops). Maize planting in the northern mid-latitudes generally occurs in April and May. Daily average air temperatures are usually c. 12–17 °C at the time of maize planting in these regions, although soil moisture of...

Journal: :منظر 0
غلامرضا جمال الدین

one of important resources for recognizing iranian islamic garden and gardening is the book of abu nasr heravi, ershād al-zerā’a. the author, qasim-ibn yusuf abu nasr, lived in the city of herat and the book is related to the late period of timurid (about 921/1515). this book is a valuable resource in the subject of agriculture and gardenin. the purpose of gardening and agriculture, planting me...

2016
Eric Adee Fernando D. Hansel Dorivar A. Ruiz Diaz Keith Janssen

Strip-till has been used at a large scale in east central Kansas as an alternative to earlier planting dates under a no-till system. To determine the effects of planting corn (Zea mays) under previously established strip-tilled fertilized rows, experiments were conducted on an Osage silty clay loam soil in 2006 and 2008 and on a Woodson silt loam soil in 2009, 2010, and 2011 using three differe...

2017
Stephan Swanson Wallace Wilhelm

Corn (&a mays L.) growth has been shown to be affected by planting date and amount of residue on the soil surface. The objective of this study was to determine if the adverse effects of cool soil temperatures on early seedling growth often associated with surface residues can be overcome by planting at later dates. Corn was planted at several planting dates (late April through early June) into ...

2003
Curtis L. VanderSchaaf David B. South

Three studies in the Coastal Plain of Georgia were remeasured 7 or 8 years after planting to determine the effects of planting depth on field performance of open-rooted seedlings [root-collar diameter (RCD) ≥ 5 mm]. Average planting depth (i.e. shoot height before planting minus shoot height above ground after planting) for machine planted P. elliottii was 14 cm while hand-planted P. taeda seed...

2011
Li Deng Yali Li

Hebei agricultural planting security is relative to the agricultural products of the consumer safety of the whole province and the beijing-tianjin region of. This paper selects agricultural planting safety as the research object of products and focus on the characteristics of the agricultural products plant. This paper applies theory and method of system comprehensive evaluation to screen index...

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