obsolete 发表于 2025-3-25 06:21:16
https://doi.org/10.1007/978-3-7091-3960-8 This available N occurs mainly in the form of nitrate and ammonium. The major processes in soil which generate plant-available nitrogen can be identified as biological nitrogen fixation and ammonillcation, the latter being a process in the mineralisation of organic matter.Toxoid-Vaccines 发表于 2025-3-25 10:35:57
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https://doi.org/10.1007/978-3-662-24890-4ynthesis. Since high nitrate intakes can be considered to be a hazard to human health, it is of utmost importance to investigate whether these vegetables can be grown in such a way that an acceptable production level can be maintained without the frequently occurring high nitrate contents.难听的声音 发表于 2025-3-25 20:04:35
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https://doi.org/10.1007/978-3-658-13349-8In the indoor experiments, the effects of variations in N-supply, N0. :NH.- ratio, time of application of N, type of N-fertilizer, nitrification inhibitors, plant age, light intensity, temperature, soil-moisture content, soil pH, Mo-, P- and K-supply and variety on yield and chemical composition of spinach were studied.弯弯曲曲 发表于 2025-3-26 14:22:40
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