搜索结果: 1-15 共查到“农学 N-P fertilizer”相关记录148条 . 查询时间(0.136 秒)
Research helps farmers pinpoint high-and low-yield fields,leads to better use of fertilizer（图）
fertilizer farmers
2019/4/15
Find related stories on NSF's Long-Term Ecological Research Program at this link; find related stories on NSF's Environmental Research and Education (ERE) programs at this link.Farmers can't predict t...
Mid-rotation response to fertilizer by Pinus radiata D. Don at three contrasting sites
forest fertilization sustained response volume increment stand growth foliar nitrogen
2016/5/11
Mid-rotation responses to fertilization of Pinus radiata D. Don plantations after the first or second thinning have been observed in research experiments in many regions where the species is grown. Th...
Analysis of the aerial application of fertilizer and dolomitic limestone
fertilization liming revitalization variability
2015/3/20
The paper evaluates the quality of revitalization treatments (fertilization and liming) carried out in selected areas within Forests of the Slovakia (state enterprise) during the year 2008. Revitaliza...
The effect of Lignofert organic fertilizer on formation and quality of head lettuce yield
Lignofert–organic carbonaceous fertilizer head lettuce quality yield
2015/1/22
Nowadays soils for vegetable growing are poor in humus because the possibility of using stable dung is limited. The application of Lignofert organic carbonaceous fertilizer made of ground lignite seem...
Effects of applications of a complex and N-Ca fertilizer on leaf and fruit nutrient concentrations and some fruit quality parameters in two apple cultivars
calcium fruit firmness Malus domestica nutrient balance soluble solids storage quality
2015/1/21
The aim of this research was to study the effects of application of ‘hydrocomplex’ (H) and ‘Norway nitrate’ (NN) fertilizers on leaf and fruit nutrient concentrations and some fruit quality parameters...
Using the DNDC model to compare soil organic carbon dynamics under different crop rotation and fertilizer strategies
crop yield fertilization croplands
2014/10/23
Soil organic carbon (SOC) plays a vital role in determining soil fertility, water holding capacity and susceptibility to land degradation. On the Chinese Loess Plateau, a large amount of crop residues...
Required amounts of medium and fertilizer for potted culture of zucchini
Zucchini Rice Husk Charcoal Peat Potted Culture Fertilizer
2012/10/16
In Japan, zucchini culture has yet to get underway, and the current costs of zucchini can be attributed to damage from soil-borne disease and the unstable yields due to seasonal change of female flowe...
Relative effects of anaerobically-digested and conventional liquid swine manure, and N fertilizer on crop yield and greenhouse gas emissions
Ammonia Volatilization Anaerobic Digestion
2012/10/15
Anaerobic digestion is a promising technology that could provide an option for managing animal waste with reduced greenhouse gas emissions. A three-year (2006-2008) field experiment was conducted at S...
Short-term influence of anaerobically-digested and conventional swine manure, and N fertilizer on organic C and N, and available nutrients in two contrasting soils
Anaerobic Digestion Available N P, K and S Organic C and N Soil Swine Manure
2012/9/24
A three-year (2006-2008) field experiment was conducted at Swift Current and Star City in Saskatchewan to determine the short-term in-fluence of land-applied anaerobically digested swine manure (ADSM)...
Reducing toxic effect of seed-soaked Cu fertilizer on germination of wheat
Amount/rate of Cu Seed-Soaked Cu Soaking Time/Duration
2012/9/21
A laboratory incubation experiment (20℃) was conducted to find if the detrimental effects of seed-soaked Cu on wheat seedlings can be minimized by reducing time duration of seed in contact with Cu EDT...
Sources of inaccuracy when estimating economically optimum N fertilizer rates
Confidence Interval Economic Optimum N Rate Trials
2012/5/12
Nitrogen rate trials are often performed to determine the economically optimum N application rate. For this purpose, the yield is modeled as a function of the N application. The regression analysis pr...
Effects of zinc and nitrogen fertilizer and their application method on yield and yield components of Phaseolus vulgaris L.
Phaseolus vulgaris Zinc Spray Nitrogen Fertilizer
2012/1/5
An experiment in factorial format based on randomized complete block design with 3 replications was conducted to study the effects of zinc spray (0 and 1 g/L) and nitrogen fertilizer (0, 25, 50 and 75...
Cropping frequency and N fertilizer effects on soil water distribution from spring to fall in the semiarid Canadian prairies
Fallow Frequency Water Use Plant Biomass Spring Wheat Soil Water
2011/8/4
In the semiarid Canadian prairies, water is the most limiting and nitrogen (N) the second most limiting factor influencing spring wheat (Triticum aestivum L.) production. The efficiency of water-and n...
Eco-friendly Production of Maize Using Struvite Recovered from Swine Wastewater as a Sustainable Fertilizer Source
Swine Wastewater MAP Struvite Slowly-releasing Fertilizer
2011/5/9
Magnesium ammonium phosphate (MAP) was recovered from swine wastewater and the feasibility of reutilizing it as a slowly-releasing fertilizer was evaluated. Maize growth was investigated with normal a...
Effect of different fertilization on spring cabbage (Brassica oleracea L. var. capitata) production and fertilizer use efficiencies
Spring Cabbage Fertilizer Use Efficiency
2011/5/8
Just after transplanting, the vegetable has difficulty in nutrients uptake. To explore the effect of different fertilization on spring cabbage (Brassica oleracea L. var. capitata) production and ferti...