氮是茶叶中旦白质主要组成物质,占旦白质成分16-18%,而旦白质又是茶树体,内各种细胞原生质的重要组成物质,所以氮在茶树营养上是很重要的。茶芽萌发从第一片真叶出现时对氮素养分吸收量就大大增加,氮肥供给充足,茶树叶片呈深绿色,氮肥供给不足叶片呈黄绿色。茶树是多年生叶用作物一年多次采摘,消耗氮量多,而土壤中氮的淋失也 Nitrogen is the main component of the protein in the white tea, accounting for 16-18% of the protein component, and protein is the tea tree body, an important component of various cell protoplasts, so nitrogen in the tea nutrition is very important. Tea germination from the first true leaves appears when the amount of nutrient uptake of nitrogen on the greatly increased supply of adequate nitrogen supply, dark green tea leaves, nitrogen supply leaves greenish yellow. Tea trees are perennial leaf crops picked many times a year, consuming more nitrogen, and soil leaching of nitrogen is also