毛叶枣的矿质营养特性

Mineral Nutritional Characteristics of Zizyphus mauritian Lam.

以2～3年龄毛叶枣(ZizyphusmauritianaLam.)品种高朗一号为试材,采用大田调查分析和数理统计方法,研究毛叶枣矿质营养特性,结果表明,3年龄毛叶枣在整个生长季节每株树需要纯N156.6g,P14.3g,K194.5g,Ca102.1g,Mg29.0g,B0.25g;不同物候期毛叶枣叶片养分含量存在着差异,N、P以营养缓慢生长期、硬核期含量较高,K含量一直在下降,Ca以采果前后期较高,Mg变化不大;毛叶枣果实养分积累为双S型;高产区叶片N、P含量在营养生长旺盛期、花芽分化初期显著高于低产区。

Mineral nutritional characteristics of Ber(Zizyphus mauritian Lam.cv.Gao lang1)were studied by ways of investi-gation and analysis of N,P,K,Ca ,Mg ,B content of the leaf,shoot,stem,flower and fruit collected at different phenolog-ical stages and yielding plantations.The results obtained were as follow:(1)At the whole growth period of Ber,a single tree needed N156.6g,P14.3g,K194.5g,Ca 102.1g,Mg 29.0g and B0.25g.Mg and B nutritional elements were not easily moved in the tree;(2)The nutrient content in the leaf of Ber was significantly different at different phenological stages.N,P,K content in the leaf was high at slow growth stages and stone-hardening stage.K content always decreased.Ca content was high at harvest stage and after harvest.Mg content was almost the same at all phenological stages;(3)The nutrient content accumulation in Ber fruit showed a double S pattern;(4)The N,P content in the leaf of Ber in high yield trees was higher than those in low yield trees at fast vegetative stage and bud differentiation stage.