搜索结果: 1-14 共查到“农学 NPK”相关记录14条 . 查询时间(0.093 秒)
Effect of Mineral, Bio-NPK Soil Application of Young Olive Trees and Foliar Fertilization on Leaf and Shoot Chemical Composition
Coronaiki olive Manzanillo olive fertilization Biofertilizer kotengin chlorophyll carotene
2010/11/15
The present study was carried out on one year -old two olive cultivars, Coronaiki as oil cultivar and Manzanillo as double purpose (table and oil) cv. in a private farm located at western desert along...
Effect of Mineral and Bio-NPK Soil application on Vegetative Growth, Flowering, Fruiting and Leaf Chemical Composition of Young Olive Trees
Coronaki olive Manzanillo olive fertilized Biofertilizer kotengin
2010/11/15
The present study was carried out on one year -old trees of two olive cultivars, Coronaki as
oil cultivar and Manzanillo olive as double purpose cv. (table and oil) in a private farm located at Weste...
EFFECT OF NPK FERTILIZER ON THE GROWTH OF SAPROPHYTIC FUNGI IN ALLUVIAL SOIL
saprophytic fungi mineral fertilizers plum culture
2010/12/8
The influence of different NPK fertilizer rates on the developement of the saprophytic fungi of the alluvial soil planted with plum culture has been studied over the three-year period (2003 – 2005). T...
NPK对扬麦12产量及主要经济性状效应研究
小麦 高产栽培 回归分析 数学模型
2010/2/21
为了探索扬麦12高产栽培条件下N、P2O5、K2O三因子的最佳组合，采用三元二次正交旋转组合设计，研究3因子对扬麦12产量及主要经济性状的效应，建立了33套试验因子与产量及主要经济性状的回归模型。分析得出产量≥400kg/667m2的主要经济性状的指标值及相对应的农艺措施：有效穗24.98～25.72万/667m2、株高84.50～86.67cm、穗长6.57～6.86cm、小穗数15.49～15...
采用3 种典型土壤: 河南封丘石灰性潮土、江苏常熟中性黄泥土及江西鹰潭红壤, 研究室内纯培养过程中N 素在土壤中的转化及
其受PK 影响的规律。全N 研究结果表明: 外源铵态N 在土壤中极易通过挥发、硝化和反硝化等途径而减少。随培养时间的延长, 土壤
中全N( 不包括硝态N) 均呈下降趋势, 其中黄泥土和潮土的降幅大于红壤。施N 条件下,PK 肥的施用对氮的转化也有一定的影响, 施P
处理的...
夏播黑花生干物质积累与NPK吸收分配特点研究
黑花生 干物质 养分吸收量 日吸收力
2009/3/11
大田试验研究了夏播黑花生干物质积累及其对氮、磷、钾的吸收特点，结果表明：植株总干重自出苗后随生育期的推移而持续上升，以8月中下旬增长速度最快；总过程可以分为缓慢增长期、快速增长期和稳定期3个不同时期，并分别以7月中旬和8月下旬为两个重要转折点。对氮、磷、钾的养分需求为前期少，出苗后前70天养分吸收量不足总量1/3，以后迅速上升，至收获前仍保持缓慢上升势头,后40天左右养分吸收量占总量的2/3。每生...
Growth and yield of white guinea yam（Dioscorea rotundata Poir.）influenced by NPK fertilization on a forest site in Nigeria
Crop growth rate Leaf area index Total dry matter yield
2009/2/19
Two field experiments were conducted at Evboneka in Edo State, Nigeria to determine the optimum fertilizer requirement of white guinea yam (Dioscorea rotundata Poir) and to develop an efficient fert...
尿素熔融法制有机－无机NPK复肥
尿素 熔融法 氮钾磷复肥
2008/11/5
该项目采用尿素熔融液同有机物和其他肥料盐类混合造粒，同国内外其他工艺比较，其创新点在于：利用尿素熔融液在混合过程中帮助成粒，由于在混合过程中尿素熔融液冷却并释放潜热，造粒物料的温度大幅提高，只需添加少量的水或蒸汽即可达到理想的成粒条件。造粒物料水分降低，有助于减轻干燥过程的负荷，甚至在生产高氮含量产品时无需干燥过程。此外，产品的外观和强度也有较好的改善，吨产品能耗较低。
The Effect of Foliar Application of Ga3 and Soil Dressing of Npk at Different Levels on the Plant Productivity of Potatoes (Solanum tuberosum L.)
Foliar Application of Ga3 Soil Dressing of Npk the Plant Productivity of Potatoes
2010/11/11
The present work was carried out at the Horticulture Experimental Station (Ministry of
Agricultural) at Barmoon experimental farm, Dakhalia Governorate, Egypt., during 2005/2006 and
2006/2007, potat...
Eeffects of Planting Density and NPK Fertilizer on Growth and Fruit Yield of Tomato (Lycospersicon esculentus Mill)
Fruit yield NPF fertilizer planting density and tomato cultivars
2010/11/11
Effects of planting density and NPK fertilizer application on growth and fruit yield of tomato
were carried in 2003 and 2004 at Evboneka, Nigeria was carried to determine the appropriate
planting de...
The Response of Dioscorea rotundata to NPK Fertilizer Application in Edo State, Nigeria
Dioscorea rotundata forest zone tuber yield and NPK fertilizer
2010/11/10
The influence of NPK 15:15:15 fertilizer application on Dioscorea rotundata cv “Obiaoturugo”
was carried at Evboneka in Edo State to determine the optimum level of NPK fertilizer application on yam i...
Effect of Controlled Release and Water Soluble Fertilizers on Nutrient (NPK) Uptake and Dry Matter Production of Chilli var. PKM-1
Controlled release fertilizer water soluble fertilizer sandy loam
2010/11/10
An investigation was carried out to find out the influence of controlled release fertilizers (CRF) and water soluble fertilizers (WSF) as NPK sources vis-a-vis standard fertilizers on the growth and n...
Effect of NPK fertilization and elemental sulphur on growth and yield of lowbush blueberry
sulphur fertilizers soil pH Vaccinium angustifolium small fruits
2010/8/9
The aim of the research was to determine the effect of fertilizers on the pH of former arable soils and on the growth and the yield of the lowbush blueberry (Vaccinium angustifolium Ait.). Lowbush blu...