يعرض 221 - 240 نتائج من 25,711 نتيجة بحث عن '(( 50 mg decrease ) OR ((( 50 ((nn decrease) OR (a decrease)) ) OR ( a point decrease ))))', وقت الاستعلام: 0.53s تنقيح النتائج
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    Global Land Use Change Impacts on Soil Nitrogen Availability and Environmental Losses حسب Jing Wang (6206297)

    منشور في 2025
    "…Anthropogenic activities, particularly land use change and management practices, alter the global nitrogen (N) cycle. As a central part of the global N cycle, soil N supply from net N mineralization (NNM) and net nitrification (NN) contributes to over 50% of crop N uptake. …"
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    Changes in lowland paddy soil fertility in the Philippines after 50 years of the Green Revolution حسب Atsushi Nakao (12396)

    منشور في 2021
    "…<p>The Green Revolution (GR) made a major contribution to increasing the rice yield in the Philippines from 1.3 t ha<sup>−1</sup> in 1966 to 4.0 t ha<sup>−1</sup> in 2018, but the changes in paddy soil fertility that occurred during this 50-year period remain unknown. …"
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