Search Results - "long-term experiment"
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Combining nitrogen effects and metabolomics to reveal the response mechanisms to nitrogen stress and the potential for nitrogen reduction in maize
Published 2023-09-01Subjects: “…long-term experiment…”The physiological and metabolic differences in maize under different nitrogen (N) levels are the basis of reasonable N management, which is vital in improving fertilizer utilization and reducing environmental pollution. In this paper, on the premise of defining the N fertilizer efficiency and yield...
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Long-Term Effect of Fertilizer and Rice Straw on Mineral Composition and Potassium Adsorption in a Reddish Paddy Soil
Published 2013-04-01Subjects: “…long-term experiment…”Increasing K+ adsorption can be an effective alternative in building an available K pool in soils to optimize crop recovery and minimize losses into the environment. We hypothesized that long-term fertilization might change K+ adsorption because of changes in the chemical and mineralogical propertie...
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Effect of long-term fertilization on phosphorus fractions in different soil layers and their quantitative relationships with soil properties
Published 2022-01-01Subjects: “…long-term experiment…”Investigating the dynamics and distribution of soil phosphorus (P) fractions can provide a basis for enhancing P utilization by crops. Four treatments from a 29-year long-term experiment in black soil with maize cropping were involved in this study: no fertilizer (CK), inorganic nitrogen and potassi...
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Effects of Long-Term Winter Planted Green Manure on Physical Properties of Reddish Paddy Soil Under a Double-Rice Cropping System
Published 2012-04-01Subjects: “…long-term experiment…”Soil physical properties are important indicators of the potential for agricultural production. Our objective was to evaluate the effects of long-term inputs of green manures on physical properties of a reddish paddy soil (Fe-Typic Hapli-Stagnic Anthrosols) under a double cropping system. The common...
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Dynamics of organic carbon and nitrogen in deep soil profile and crop yields under long-term fertilization in wheat-maize cropping system
Published 2022-03-01Subjects: Get full textSoil organic carbon (SOC) and nitrogen (N) are two of the most important indicators for agricultural productivity. The primary objective of this study was to investigate the changes in SOC and N in the deep soil profile (up to 100 cm) and their relationships with crop productivity under the influenc...
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Effect of long-term application of NP chemical fertilizer on soil exchangeable Mg distribution and accumulation under different cropping systems
Published 2012-03-01Subjects: “…long-term experiment…”To understand the effects of different cropping systems on soil exchangeable Mg, samples of soil profiles under six types of different cropping systems were collected from long-term location experiment station, Changwu County, Shaanxi Province. The changing conditions of exchangeable Mg in soil prof...
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Using the DSSAT model to simulate wheat yield and soil organic carbon under a wheat-maize cropping system in the North China Plain
Published 2017-10-01Subjects: Get full textAbstract: Crop modelling can facilitate researchers' ability to understand and interpret experimental results, and to diagnose yield gaps. In this paper, the Decision Support Systems for Agrotechnology Transfer 4.6 (DSSAT) model together with the CENTURT soil model were employed to investigate...
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The yield values of densimetric fractions from typical chernozems of different land use types
Published 2020-09-01Subjects: Get full textOne of the most justified and applied approaches to isolating pools of soil organic matter is fractionation in heavy liquids. The main problem with this approach is rather large losses in the separation of fractions at the stage of washing fractions from heavy liquids. The paper presents a densimetr...
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