中国野生猪笼草资源分布现状及养分利用策略

Distribution Status and Nutrient Utilization Strategy of Nepenthes mirabilisin China

通过标本和文献查阅,实地调研了中国野生猪笼草的资源现状、生境特征及其养分含量。结果表明,中国野生猪笼草在广东、广西和海南等省有分布,全部累计种群数量220株,有50%的分布地已找不到猪笼草,主要生长在地表水丰富,相对湿度高,且南坡向阳,有机质含量不高的酸性土壤中,目前生存现状堪忧。同时,猪笼草生长的生境普遍存在土壤缺磷和缺钾问题,土壤营养成分远远不能满足其生长需要,往往捕虫笼和茎干的养分含量较高,尤其是捕虫笼生长期间对钾元素的需求,说明了猪笼草的捕虫习性,也为猪笼草的引种栽培提供了重要的科学依据。

Based on specimens and literature review,the wild resource,habitat characteristics and nutrient content of Nepenthes mirabilis in China were investigated.The results showed that the N.mirabilis in China was mainly distributed in Guangdong,Guangxi and Hainan provinces,with a total population of 220 plants.It could not be found in 50%of the distribution areas that published before.It mainly grew in acid soils with abundant surface water,high relative humidity,sunny south slope and low organic matter content.The current survival situation was worrying.At the same time,P and K deficiency in soil are common in the habitats where N.sinensis grows.The nutrient content of soil is far from meeting its growth needs.The nutrient content of cages and stems is often high,especially the potassium requirement during the growth of cages.This also provides an important scientific basis for the introduction and cultivation of N.sinensis.