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茶树是低丘红壤地区主要经济作物之一,但这一地区茶园单产低,茶叶品质较差,经济效益不高,究其原因主要是茶园土壤矿质营养元素贫乏、肥力低下之故。锌作为茶树生长发育必需的微量元素,不仅是许多酶的组分和活化剂,而且与生长素和叶绿素的合成有关。国内外大量试验研究与生产实践表明,茶树施锌能提高产量、改善茶叶品质,肯尼亚、马拉维等国已把茶园喷锌作为增产提质的有效措施。因此,调查研究低丘红壤茶园土壤的锌含量以及田间喷锌的效果,对于合理施用锌肥,提高这一地区茶叶单产和品质具有重要的现实意义。
Tea tree is one of the main cash crops in the hilly red soil area. However, tea plantation yields are low in this region, tea quality is poor, and economic benefits are not high. The main reason is that tea plantation soil is poor in mineral nutrients and fertility. Zinc, a necessary trace element for tea tree growth and development, is not only a component and activator of many enzymes, but also relates to the synthesis of auxin and chlorophyll. A large number of experimental studies and production practices at home and abroad show that applying zinc fertilizer to tea tree can increase yield and improve tea quality. In Kenya, Malawi and other countries, tea plantation zinc spraying has been taken as an effective measure to increase yield and improve quality. Therefore, investigating the zinc content in the hilly red soil tea plantation and the effect of zinc spraying in the field have important practical significance for the rational application of zinc fertilizer and the improvement of tea yield and quality in this area.