【摘要】 于2017年7月中旬(绿竹出笋盛期),在福建省尤溪县对同一区域内栽培措施相对一致的3种土壤类型(山地红壤、坡地黄红壤、河滩冲积土)的肥力及其栽培的绿竹笋的主要营养成分进行分析。结果表明,3种土壤类型的基础肥力有明显不同,全氮、全磷、全钾、全铁、有机质等养分含量以及pH值存在显著或极显著差异。其中,河滩冲积土的pH、全钾、钙、镁含量较高,黄红壤的碱解氮、有效磷、速效钾、全氮、全磷、全铁含量较高,红壤的有机质含量较高。但在集约经营下有效养分供应相对一致,即速效氮、磷、钾养分含量差异不显著;在相同气候和经营管理下,不同土壤类型培育的竹笋营养成分比例与内含元素含量变幅较大,河滩冲积土的竹笋氮、磷、镁、粗蛋白含量较高,黄红壤的竹笋钾、铁含量较高,而红壤的竹笋钙、粗脂肪、可溶性糖含量较高;竹笋的内含养分与土壤养分间的相关分析表明,土壤中速效钾、全钾、镁、铁含量直接影响着竹笋主要养分的积累,有机质、碱解氮含量也具有一定相关性。更多还原

【Abstract】 The differences of 3 types soil(mountainous red soil,sloping yellow-red soil and beach soil)fertility and its cultivated Bambusa oldhamii shoot′s nutritional ingreditents of the peak period are studied in Youxi County,Fujian Province.The results show that 3 types soil basal fertility of Bambusa oldhamii forest are obviously different,the values of pH,total K,Ca and Mg are the highest in beach soil,the values of available N,P,K,total N,total P and Fe are the highest in yellow-red soil,the value of Organic Matter is the highest in red soil.With very significant or significant differences respectively in total N,total P,total K Fe and pH,Organic Matter,while the supply of available N,K,P are relatively consistent.i.e.,no significant difference in available N,P and K among 3 types soil.Within the same climate and cultivation management,the proportion of nutrients and element content of bamboo shoots in different cultivated soils are significant different.The coefficient of variation( C.V.) of each index are 10.8%～62.8%,the C.V.of the bamboo shoot N content is the lowest,and the C.V.of P,K,Ca are the highest.The contents of N,P,Mg and crude protein in bamboo shoot are the highest in beach soil,the content of K,Fe are the highest in yellow-red soil,the content of Ca,crudNe fat and soluble sugar are the highest in red soil.Correlation analysis between shoots ntritional ingreditents and soil nutrients shows that the main factors affecting the nutrient accumulation of bamboo shoots are available K,total K and Mg,Fe content in cultivated soil.更多还原