海南西南部芒果营养特性的研究

Nutritive Characteristics of Mango in the Southwest Part of Hainan

调查结果表明,海南西南部3个芒果栽培品种(鸡蛋芒Dashehari、青皮Okrong、白象牙NangKlangwan)树体营养生长需氮量多,其次是钾和钙,果实生长需钾多,其次是氮;不同物候期芒果叶片养分含量存在着显著差异;不同芒果品种间养分含量存在着显著差异;鸡蛋芒果实养分积累模式为单S型,可分为3个阶段;海南西南部鸡蛋芒高产区与低产区叶片养分含量存在着显著差异,养分不足,特别是氮素不足限制了芒果产量的提高。

Nutritive characteristics of mango(cultivars:Dashehari,Okrong,Nang Klangwan)in the southwest part of Hainan were studied by ways of investigation and analysis of the nutritive sta-tus of the mango leaves obtained from different phonological phases and yielding mango plantations.The results are shown as follows.(1)In the vegetative growth of mango,N was badly needed by mango,followed by K and Ca;in the fruit development,K is in bad need,followed by N.(2)The nutrient content in the leaves of mango was significantly different at different phenolog ical phases.(3)The nutrient content in the leaves among different varieties were significantly different.(4)The nutrient accumulation in Dashehari fruit showed a single″S″pattern that could be di vid ed into three periods.(5)The nutrient contents in the leaves of Dashehari between high yield trees and low yield trees in the southwest part of Hainan were significantly different.The lack of nutrient,espe cially N,limit ed the yield.