硫酸锌袋控缓释对桃幼树锌素营养状况的影响  

Effects of Bag-controlled Release Zinc Sulfate Fertilizer on Zinc Nutritional Status of Young Peach Trees

作　　者：王苗苗[1] 彭福田[1] 颜克发[1] 房龙[1] 张华美[1] 

机构地区：[1]山东农业大学园艺科学与工程学院,山东泰安271018

出　　处：《山东农业科学》2012年第10期66-69,75,共5页Shandong Agricultural Sciences

基　　金：国家现代农业产业技术体系专项资金(CARS-31-3-03)资助

摘　　要：袋控缓释肥是根据果树个体较大的特点,结合果树养分需求特性,改变一般控释肥颗粒包膜的设计思路,利用控释袋包装达到控制养分释放的一种肥料。本试验研究了5排孔、20 g/袋的硫酸锌袋控缓释肥的田间养分释放规律和桃园应用效果。结果表明:硫酸锌袋控缓释肥在105 d养分释放量达到80%以上,可以在1个生长季内稳定、持续地为桃树提供锌素;对鲁星1号幼树进行施肥,与不施肥处理G及分两次散施处理D(ZnSO440 g/棵)、E(ZnSO460 g/棵)、F(ZnSO480 g/棵)比较,不同施肥梯度的袋控缓释处理A(2袋/棵)、B(3袋/棵)、C(4袋/棵)不同程度提高了根区土壤有效锌的含量,并且土壤有效锌含量波动小,能够维持较稳定状态,同时叶片全锌、全氮、全磷、全钾含量在生长末期也维持较高水平,叶片净光合速率显著较高。袋控缓释处理A、B和C之间进行比较,各指标均差异不显著。Bag controlled -release fertilizer is a new type designed according to the big individual vol- ume of fruit trees. It uses controlled - bag to control the release of nutrients. The bag controlled - release fer- tilizer designed with five -line micro hole and 20 g zinc sulfate every bag was studied in peach orchard. The results showed that the nutrient release concentration of bag controlled - release zinc sulfate fertilizer was above 80% in 105 days and could satisfy the demand of zinc nutrient for peach all over one growth season. Com- pared with the fertilizer treatments spreading none and two times D （ ZnSO4 40 g per tree）, E （ ZnSO4 60 g per tree ） and F （ ZnSO4 80 g per tree） in orchard respectively, the zinc concentration of soil in root area and leaves were improved and kept stable by bag controlled -release treatments. The N, P and K concentration and Pn of Leaves were all higher. The experimental results of A （2 bags per tree）, B （3 bags per tree） and C （4 bags per tree） had no much differences.

关 键 词：桃 幼树 锌 袋控缓释 

分 类 号：S662.106.2[农业科学—果树学]