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查明红壤茶园多年田间试验的施肥处理中活性锰含量减少。提出施肥处理在与不施肥处理比较下茶叶吸收锰下降的趋势。在潮湿亚热带的西格鲁吉亚,矿质肥料提高作物产量很多。例如,茶鲜叶的产量增加4～5倍以上,桔类作物增加3～4倍。这就决定了每年施用大量的工业矿质肥料。有系统的、长期的(30多年)施肥改变了红壤的某些特性,在茶园中查明了增加有机质、全氮和水解氮、水溶性和易溶性磷、活性钾等的含量。除此以外,片面地施用生理酸性铵盐,本来就是酸性
It was found that the content of active manganese in the fertilization treatment of red soil tea field for many years in field trials decreased. The fertilizing treatment showed that the manganese absorption of tea decreased with the non-fertilization treatment. In humid subtropics of West Georgia, mineral fertilizers increase crop yields. For example, the output of tea leaves increased 4 to 5 times more, orange crops increased 3 to 4 times. This determines the annual application of large amounts of industrial mineral fertilizer. Systematic, long-term (more than 30 years) fertilization has changed some of the characteristics of red soils, and increased levels of organic matter, total nitrogen and hydrolysed nitrogen, water-soluble and soluble phosphorus, and active potassium were identified in the tea plantations. In addition, the one-sided application of physiologically acidic ammonium salts is inherently acidic