formula 发表于 2025-3-26 21:57:24
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oregressive with exogenous inputs (NARX) method. The model efficiency was satisfactory with a coefficient of correlation (R), 0.91 for training, 0.88 validation, and 0.87 testings period. The overall value of R (0.90) indicates the utility of this ANN-SCS based coupled model for rainfall-runoff simuAVERT 发表于 2025-3-27 11:45:06
licates of Ca, Mg, Na, and K because these elements are most abundant. Minerals are aggregated into rocks. Rocks may be igneous, sedimentary, and metamorphic. Igneous rocks are formed by solidification of magma or lava, sedimentary rocks are formed by lithification of sediments or by precipitation fEXUDE 发表于 2025-3-27 17:01:58
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neral fertilizers (N.P.K.) and higher-than-average applications (N.P.K.) against a background of 45t/ha of organic manure contributed to a transition in the kind of humus from a humate to fulvate-humate type, as did increased doses of mineral fertilizers alone.空洞 发表于 2025-3-28 00:52:26
transform the annual loss of 3.4–4 tC/ha to annual carbon capture of 0.5–1.5 tC/ha/yr, save half the cost of diesel fuel and increase production. At the same time, the legumes will produce all the nitrogen the crops can use—with enormous savings in the energy presently used to manufacture nitrogen无能性 发表于 2025-3-28 04:19:20
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neral fertilizers (N.P.K.) and higher-than-average applications (N.P.K.) against a background of 45t/ha of organic manure contributed to a transition in the kind of humus from a humate to fulvate-humate type, as did increased doses of mineral fertilizers alone.小教堂 发表于 2025-3-28 14:16:30
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